New offer - be the first one to apply!

June 26, 2026

Full Stack Developer

Mid • Remote

2,000 - 4,650 USD

Krakow, MA, Poland

About the role

We are looking for a Full Stack Developer to build and integrate LLM-powered features across frontend and backend systems. You will develop React components, extend Python backend services, and work directly with LLM APIs — including Claude, OpenAI, or similar — to deliver AI-driven product functionality. The role requires close collaboration with product, QA, and engineering teams with active overlap in EST hours.

What you will do

  • Develop and integrate LLM-based functionality, including prompt engineering, API-based model usage, and AI workflows;
  • Build and maintain React-based frontend components;
  • Develop and extend Python backend services, including APIs, integrations, and data processing;
  • Collaborate closely with product, QA, and engineering teams in overlapping EST hours;
  • Participate in design discussions and contribute to scalable, maintainable solutions.

Must haves

  • Commercial experience with LLMs, preferably Claude, OpenAI APIs, similar APIs, or custom model integration;
  • 1+ year of React experience with hooks, state management, and component-driven development;
  • 1+ year of Python experience in API development and backend logic;
  • Experience working in distributed teams with active collaboration;
  • Upper-intermediate English level.

Nice to haves

  • Experience with FastAPI or similar frameworks;
  • Exposure to AI evaluation, prompt testing, or AI quality considerations;
  • Prior work on data-heavy or AI-driven products.

Benefits

  • Professional growth: mentorship, TechTalks, and personalized growth roadmaps;
  • Competitive USD-based compensation and budgets for education, fitness, and team activities;
  • Opportunity to join projects with modern solutions development and top-tier clients;
  • Flexible schedule with options for remote work or office work.

Similar jobs you might like

Technology

AgileEngine

Full Stack Developer ID63542

Mid

Remote

Krakow, Poland

1,400 - 3,400 USD

🏢 Summary: Full Stack Developer role focused on building and integrating LLM-powered features across React frontend and Python backend systems. The position involves working with LLM APIs, developing AI-driven functionality, and collaborating with cross-functional teams in overlapping EST hours. It combines frontend, backend, and AI integration responsibilities in a distributed environment. 🗂️ Requirements: Commercial experience with LLMs and model APIs, Minimum 1 year experience with React, Minimum 1 year experience with Python, Experience developing and integrating APIs, Experience with backend service development, Ability to work in distributed teams with EST overlap, Upper-intermediate English level 📃 Skills: React, Python, LLM, OpenAI, Claude, API, FastAPI, AI, REST, Git 🏢 Description: AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Full Stack Developer to build and integrate LLM-powered features across frontend and backend systems. You will develop React components, extend Python backend services, and work directly with LLM APIs to deliver AI-driven product functionality. The role requires close collaboration with product, QA, and engineering teams with active overlap in EST hours What you will do Develop and integrate LLM-based functionality, including prompt engineering, API-based model usage, and AI workflows; Build and maintain React -based frontend components; Develop and extend Python backend services, including APIs, integrations, and data processing; Collaborate closely with product, QA, and engineering teams in overlapping EST hours; Participate in design discussions and contribute to scalable, maintainable solutions. Must haves Commercial experience with LLMs, including Claude , OpenAI , similar APIs, or custom model integration; 1+ year of experience with React , including hooks, state management, and component-driven development; 1+ year of experience with Python , including API development and backend logic; Experience working in distributed teams with active collaboration; Upper-intermediate English level. Nice to haves Experience with FastAPI or similar frameworks; Exposure to AI evaluation, prompt testing, or AI quality considerations; Prior work on data-heavy or AI-driven products. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

AgileEngine

Full Stack Engineer

Junior

Remote

Krakow, Poland

🏢 Summary: Junior Full Stack Engineer role focused on building AI-powered automation tools to generate and maintain tests for a public safety platform. The position emphasizes backend development in Java with growing involvement in TypeScript and React, integrating AI coding assistants into developer workflows. The goal is to improve test reliability, coverage, and overall developer experience. 🗂️ Requirements: ~2 years professional software engineering experience, Strong Java backend development skills, Working knowledge of TypeScript, Working knowledge of React, Working knowledge of HTML, Experience with Playwright or similar E2E testing framework, Experience with end-to-end testing, Upper-intermediate English level 📃 Skills: Java, TypeScript, React, HTML, Playwright, AI, Claude, Codex, CI/CD, Testing 🏢 Description: ID68431 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Junior Full Stack Engineer to build AI-powered automation tools that generate and fix tests across a public safety platform. You will work primarily in Java on the backend, with growing involvement in TypeScript and React on the frontend, integrating AI coding assistants like Claude Code and Codex into developer workflows. The role focuses on improving test reliability, coverage, and developer experience alongside a collaborative CAD engineering team. What you will do Build automation tools that streamline test generation and maintenance, leveraging modern tooling (including AI) where it adds value; Contribute across the stack — primarily backend (Java), with growing involvement in frontend (TypeScript/React) and end-to-end testing; Integrate AI coding assistants (Claude Code, Codex, and similar tools) into developer workflows; Improve test reliability, coverage, and maintainability across the CAD codebase using Playwright; Collaborate with senior engineers to identify pain points in the development lifecycle and design tooling solutions that scale; Contribute to developer experience (DX) improvements across the team. Must haves ~2 years of professional software engineering experience; Solid foundation in Java for backend development; Working knowledge of TypeScript , React , and HTML for fullstack contributions; Experience with Playwright or a comparable end-to-end testing framework; Genuine interest in developer experience, automation, and tooling; Strong communication skills and a collaborative mindset; Upper-intermediate English level. Nice to haves Hands-on experience with Claude Code CLI, Codex, or other AI coding assistants; Prior work on test automation, CI/CD pipelines, or internal developer platforms; Open-source contributions related to DX or testing tools. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

AgileEngine

Full Stack Engineer

Mid

Remote

Krakow, Poland

3,600 - 7,410 USD

🏢 Summary: The role is for a Middle/Senior Full Stack Engineer to build and scale a SaaS platform using Java and React, contributing to architecture, secure cloud-based integrations, and CI/CD processes. The position involves end-to-end development, code reviews, and collaboration with cross-functional teams in a product built from the ground up. It offers significant ownership and impact within a high-scale environment. 🗂️ Requirements: 4+ years of SaaS development experience, Proficiency in Java, Proficiency in React, Strong knowledge of SQL, Experience with microservices architecture, Experience with JavaScript and TypeScript, Understanding of CI/CD practices, Understanding of observability concepts, Ability to work with EST time zone overlap, Upper-intermediate English proficiency 📃 Skills: Java, React, SQL, JavaScript, TypeScript, ReactJS, Microservices, CI/CD, Redis, Elasticsearch, AWS 🏢 Description: ID67841 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Middle/Senior Full Stack Engineer to build robust server-side solutions for a SaaS platform operating at scale, working across Java, React, SQL, Redis, and Elasticsearch. You will contribute to architecture decisions, design reusable client integration systems following secure cloud best practices, and participate in code reviews and CI/CD processes as a trusted technical resource for the team. The role offers significant ownership from day one in a product built from the ground up. What you will do Build a cleanly designed, reusable client integration system adhering to secure cloud software best practices from start to finish; Collaborate with design and product teams to understand requirements, create estimates, plan sprints, and meet delivery timelines; Plan and accurately estimate construction and delivery timelines; Contribute to technical documentation and automated build and deployment processes designed to increase engineer efficiency; Review code submitted by other software engineers and submit your own code for review as part of the pull-request deployment process. Must haves 4+ years’ experience of SaaS experience; High level of proficiency in Java , React , and SQL ; Knowledge of or prior experience with microservices architecture ; Front end experience with JavaScript , Typescript , and ReactJS ; DevOps mindset of automation and continuous improvement; Good understanding of observability and familiarity with strong CI/CD practices; A proven ability to meet deadlines, motivate others, and consistently produce high quality, impactful results; Ability to maintain at least 6 hours of overlap with EST working hours ; Upper-intermediate and higher English proficiency. Nice to haves Experience building software in the cloud with AWS preferred. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

New offer

AgileEngine

Software Engineer

Senior

Remote

Krakow, Poland

5,599 - 7,410 USD

🏢 Summary: Senior React Native Engineer role focused on building and shipping cross-platform mobile applications using React Native and Expo, alongside developing web apps in ReactJS and APIs in Node.js. The position involves full ownership of the feature lifecycle, from architecture and implementation to CI/CD and production monitoring, using TypeScript and AI-assisted development tools. Work is delivered in an Agile, product-centric environment with emphasis on quality, performance, and collaboration. 🗂️ Requirements: 4+ years of professional software engineering experience, Experience developing production software, Experience in Agile or team-based development environments, Proficiency in JavaScript, Proficiency in Node.js, Proficiency in ReactJS, Proficiency in React Native, Experience with REST APIs and service-based architectures, Experience with databases and data persistence concepts, Ability to follow established architecture and development standards, Strong problem-solving and troubleshooting skills, Ability to collaborate effectively within an engineering team, Good communication skills, Bachelor’s degree in Computer Science, Engineering, or related field or equivalent practical experience, Upper-intermediate English level 📃 Skills: JavaScript, TypeScript, Node.js, ReactJS, React, ReactNative, Expo, REST, APIs, Databases, CI/CD, Claude, GitHubCopilot, Agile, Codility 🏢 Description: About the role We are looking for a Senior React Native Engineer to build and ship cross-platform mobile apps using React Native and Expo while developing web applications in ReactJS and APIs in Node.js for a franchisee engineering team. You will own the engineering lifecycle for your features — architecture, implementation, testing, CI/CD, and production monitoring — writing clean TypeScript and actively using AI tools including Claude and GitHub Copilot as a development accelerator. The role follows Agile practices in a collaborative, product-centric engineering environment. What you will do - Build and ship cross-platform mobile apps using React Native and Expo (iOS and Android); - Develop web applications in ReactJS, sharing business rule libraries with mobile apps; - Design, develop, and maintain APIs in NodeJS to support these applications; - Use Claude or GitHub Copilot as a development accelerator, generating code scaffolding, writing and reviewing tests, creating documentation and prototyping solutions; - Own the engineering lifecycle for your features: architecture, implementation, testing, CI/CD, and production monitoring; - Write clean, well-tested TypeScript code; maintain high standards through code review and documentation; - Optimize application performance for speed, responsiveness, memory, and offline capability; - Debug, troubleshoot, and resolve software defects and production issues; - Participate in Agile or product-centric delivery practices including sprint planning and retrospectives; - Learn and apply new technologies, tools, and patterns to improve system quality and team effectiveness. Must haves - +4 years of professional software engineering experience; - Experience delivering production software preferred; - Experience working in Agile or team-based development environments preferred; - Experience developing software in JavaScript, Node.js, ReactJS, React Native; - Familiarity with REST APIs and service-based architectures; - Experience working with databases and data persistence concepts; - Ability to follow established architecture and development standards; - Strong problem-solving and troubleshooting skills; - Ability to collaborate effectively within an engineering team; - Good communication skills and willingness to learn; - Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent practical experience; - Upper-intermediate English level. The benefits of joining us - Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps; - Competitive compensation: Competitive USD-based compensation and budgets for education, fitness, and team activities; - A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands; - Flextime: Tailor your schedule for an optimal work-life balance, with options of working from home and going to the office.

Technology

AgileEngine

Full Stack Engineer

Senior

Remote

Krakow, Poland

5,600 - 7,400 USD

🏢 Summary: Senior Full Stack Engineer role focused on building and modernizing a large-scale healthcare platform supporting primary care programs. The position involves developing scalable backend APIs in C#/.NET and frontend applications in React and TypeScript, along with healthcare integrations such as EMR systems and HL7/FHIR. You will collaborate cross-functionally to deliver high-quality, performant, and maintainable solutions. 🗂️ Requirements: 6+ years of software development experience, Experience with C# and .NET Framework/.NET Core/.NET 6+, Experience with React and/or Angular, Experience with TypeScript, Experience with SQL Server and/or PostgreSQL, Experience with NoSQL databases, Experience with Telerik/Kendo UI, Experience with API design and development, Experience with distributed systems, Upper-intermediate English level 📃 Skills: C#, .NET, .NETCore, .NET6, React, Angular, TypeScript, SQLServer, PostgreSQL, NoSQL, Telerik, Kendo, APIs, DistributedSystems, Azure, HL7, FHIR, EMR, EHR 🏢 Description: ID69153 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Full Stack Engineer to develop and maintain backend and frontend components of a large-scale healthcare platform supporting primary care programs. You will build scalable APIs and business workflows using C# and .NET Core, implement React and TypeScript frontend experiences, and contribute to healthcare integrations including EMR systems and HL7/FHIR standards. The role spans modernization initiatives and cross-functional collaboration with product, data, DevOps, and clinical teams. What you will do Develop and maintain backend and frontend platform components; Participate in architecture and technical design discussions; Implement scalable APIs and business workflows; Build healthcare workflows and integrations; Support modernization and refactoring initiatives; Collaborate with product, data, DevOps, and clinical teams; Improve performance, maintainability, and code quality; Contribute to code reviews and technical decision-making. Must haves 6+ years software development experience ; Experience with C# / .NET Framework, .NET Core / .NET 6+ ; Experience with React and/or Angular ; Experience with TypeScript ; Experience with SQL Server and/or PostgreSQL ; Experience with No-SQL Databases ; Experience with Telerik/Kendo UI ; Experience with API design and development ; Experience with distributed systems; Upper-intermediate English level. Nice to haves Experience with healthcare software; Experience with EMR / EHR systems; Experience building offline-first applications; Experience with Azure; Familiarity with HL7/FHIR familiarity. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

AgileEngine

Backend Engineer

Senior

Remote

Krakow, Poland

5,600 - 7,400 USD

🏢 Summary: Senior Backend Engineer role to architect and build the core systems of a next-generation AdTech platform, focusing on high-throughput, low-latency services for campaign delivery, targeting, and attribution. The position involves defining system architecture from the ground up using Python, Django, Kubernetes, and AWS in a distributed, scalable environment. Engineers will drive technical direction, optimize performance, and provide leadership in a fast-paced, product-driven setting. 🗂️ Requirements: 5+ years of software development experience building scalable backend systems, Strong knowledge of algorithms, data structures, networking, and databases, Proven experience designing and scaling distributed systems, Experience with backend programming languages (e.g. Java, .NET, Python, Node.js), Ability to design high-throughput, low-latency systems, Experience with system architecture and technical decision-making, Availability to work until 1pm EST, Upper-intermediate English level 📃 Skills: Python, Django, Kubernetes, AWS, PostgreSQL, Java, .NET, Node.js, ETL, OpenRTB, Prebid.js, GoogleAdManager, AmazonUAM, DSP, SSP 🏢 Description: ID68432 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Backend Engineer to architect and build the core systems of a next-generation AdTech platform that embeds products directly into visual experiences. You will design high-throughput, low-latency services for campaign delivery, targeting, attribution, and partner integrations using Python, Django, Kubernetes, and AWS. This is an early-stage initiative where senior engineers define the technical direction and system architecture from the ground up. What you will do Architect, build, and evolve core systems for the Ads platform; Design APIs and services supporting campaign management, targeting, delivery, attribution, and reporting; Build and optimize high-throughput, low-latency systems processing large volumes of events and data; Own critical systems end-to-end, including design, implementation, deployment, monitoring, and ongoing improvements; Drive architectural decisions and establish patterns that support scalability, reliability, and developer productivity; Collaborate closely with product, data, and partner teams to translate business requirements into robust technical solutions; Provide technical leadership through design reviews, system discussions, and mentoring other engineers; Contribute to engineering best practices, documentation, and long-term platform vision; Participate in hiring and help grow a strong, high-performing team. Must haves 5 years of software development experience building scalable systems using backend programming languages/frameworks (e.g. Java , .NET , Python , Node.js , etc); Deep understanding of computer science fundamentals, including algorithms, data structures, networking, and databases; Proven experience designing and scaling distributed systems with a focus on performance, observability, and fault tolerance; Strong architectural instincts and the ability to make high-leverage technical decisions that impact multiple teams and systems; Demonstrated ability to influence and mentor senior engineers, guide teams through ambiguity, and elevate engineering practices across the board; Exceptional ownership mindset; Availability to work till 1pm EST (till 8 pm Kyiv time) ; Excellent communication and cross-functional collaboration skills; Comfortable operating in a fast-paced, high-autonomy, product-driven environment; Experience with e-commerce and catalog management is preferred; Familiarity with Python , Django , Kubernetes , PostgreSQL , and AWS is strongly preferred, but deep expertise in analogous systems and a willingness to learn are welcome; Upper-intermediate English level. Nice to haves Strong experience with complex ETL flows and high-throughput systems is highly preferred; Experience with AdTech (This may include experience with DSPs, SSPs, ad exchanges, affiliate programs, Prebid.js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity and addressability solutions, as well as ad operations workflows.) The benefits of joining us Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

AgileEngine

Backend Engineer (AdTech)

Senior

Remote

Krakow, Poland

5,600 - 7,400 USD

🏢 Summary: Senior Backend Engineer role focused on architecting and building the core systems of a next-generation AdTech platform, designing high-throughput, low-latency services for campaign delivery, targeting, and attribution. The position involves defining system architecture from scratch, scaling distributed systems, and providing technical leadership in a fast-paced environment. Strong experience with scalable backend development and AdTech ecosystems is required. 🗂️ Requirements: 5+ years of experience building scalable backend systems, Experience in AdTech (DSPs, SSPs, ad exchanges, Prebid, Google Ad Manager, OpenRTB, etc.), Strong knowledge of algorithms, data structures, networking, and databases, Proven experience designing and scaling distributed systems, Experience with backend programming languages (Java, .NET, Python, Node.js), Ability to design high-throughput, low-latency systems, Upper-intermediate English level, Availability to work until 1pm EST, Experience mentoring engineers and driving architectural decisions 📃 Skills: Python, Django, Kubernetes, AWS, PostgreSQL, Java, .NET, Node.js, OpenRTB, Prebid.js, Prebid, GoogleAdManager, AmazonUAM, AmazonTAM, ETL 🏢 Description: ID52365 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Backend Engineer to architect and build the core systems of a next-generation AdTech platform that embeds products directly into visual experiences. You will design high-throughput, low-latency services for campaign delivery, targeting, attribution, and partner integrations using Python, Django, Kubernetes, and AWS. This is an early-stage initiative where senior engineers define the technical direction and system architecture from the ground up. What you will do Architect, build, and evolve core systems for the Ads platform; Design APIs and services supporting campaign management, targeting, delivery, attribution, and reporting; Build and optimize high-throughput, low-latency systems processing large volumes of events and data; Own critical systems end-to-end, including design, implementation, deployment, monitoring, and ongoing improvements; Drive architectural decisions and establish patterns that support scalability, reliability, and developer productivity; Collaborate closely with product, data, and partner teams to translate business requirements into robust technical solutions; Provide technical leadership through design reviews, system discussions, and mentoring other engineers; Contribute to engineering best practices, documentation, and long-term platform vision; Participate in hiring and help grow a strong, high-performing team. Must haves 5 years of software development experience building scalable systems (backend programming languages/frameworks, e.g. Java , .NET , Python , Node.js etc); Experience with AdTech (This may include experience with DSPs, SSPs, ad exchanges, affiliate programs, Prebid.js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity and addressability solutions, as well as ad operations workflows); Deep understanding of computer science fundamentals (algorithms, data structures, networking, databases); Proven experience designing and scaling distributed systems focusing on performance, observability, and fault tolerance; Strong architectural instincts and the ability to make high-leverage technical decisions that impact multiple teams and systems; Demonstrated ability to influence and mentor senior engineers, guide teams through ambiguity, and elevate engineering practices across the board; Exceptional ownership mindset — you drive initiatives forward, raise the bar, and deliver lasting impact; Excellent communication and cross-functional collaboration skills; Availability to work till 1pm EST (till 8 pm Kyiv time) ; Comfortable operating in a fast-paced, high-autonomy, product-driven environment; Experience with e-commerce and catalog management is preferred; Familiarity with Python , Django , Kubernetes , PostgreSQL , and AWS is strongly preferred, but deep expertise in analogous systems and a willingness to learn are welcome; Upper-intermediate English level. Nice to haves Strong experience with complex ETL flows and high-throughput systems is highly preferred. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

AgileEngine

Full Stack Engineer ID55426

Senior

Remote

Krakow, Poland

4,300 - 6,400 USD

🏢 Summary: Full Stack Engineer role focused on building and scaling real-time, data-driven microservices and responsive web applications. The position emphasizes backend development with Java and Spring Boot, API design, cloud deployment on AWS, and integration with a React/TypeScript frontend. You will own parts of the data layer and architecture while delivering secure, high-performance solutions with real-time capabilities. 🗂️ Requirements: 4+ years backend development experience with Java, Experience with Java 11+, Hands-on experience with Spring Boot, Experience building REST APIs with OpenAPI, Experience with WebSockets or real-time/streaming technologies, Strong knowledge of MySQL, schema design, indexing, query optimization, Experience with Flyway or Liquibase, Experience with Redis or message/event systems, Experience deploying services on AWS or other cloud provider, Ability to write automated unit and integration tests, Experience with CI/CD processes, Professional experience with React and TypeScript or strong JavaScript, Experience integrating REST APIs on frontend, Experience with Jest or other frontend testing frameworks, Upper-intermediate English level 📃 Skills: Java, Spring, SpringBoot, OpenAPI, REST, WebSockets, MySQL, Flyway, Liquibase, Redis, AWS, React, TypeScript, JavaScript, Jest, CI/CD, S3 🏢 Description: AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role As a Full Stack Engineer , you will build and scale real-time, data-driven services that power federated search and seamless user experiences across complex systems. Working with Java, Spring Boot, React, TypeScript, and AWS, you’ll develop microservices, design APIs, and deliver responsive interfaces with live updates. This role offers strong ownership of the data layer and architecture, close collaboration with stakeholders, and the opportunity to innovate using modern cloud and real-time technologies. What you will do Work full-stack with a backend emphasis; Build and maintain a microservice for federated queries, query status tracking, results handling, and device/configuration management; Write interface agents to extract data from external interfaces; Implement and improve real-time features using Redis, AWS, and WebSockets; Own part of the data layer using MySQL, S3, and migration tools; Build secure and robust services ensuring reliability and quality; Contribute to a React and TypeScript client; Embed solutions across the existing product line; Build search forms and integrate APIs with real-time updates using WebSockets; Display query status, results, and history in a responsive UI; Collaborate with engineers and stakeholders on design and implementation; Translate user workflows into APIs and UI flows in collaboration with product teams; Participate in code reviews, design discussions, and continuous improvement of architecture and practices. Must haves 4+ years of backend development experience with Java (preferably Java 11+); Hands-on experience with Spring Boot and OpenAPI for building REST APIs; Experience with WebSockets or other real-time/streaming technologies; Solid understanding of relational databases such as MySQL , including schema design, indexing, and query optimization; Experience with database migration tools such as Flyway or Liquibase ; Practical experience with Redis or message/event systems; Experience deploying and operating services on AWS or another cloud provider; Ability to write automated backend tests (unit and integration); Familiarity with CI/CD processes; Hands-on experience with AI coding tools; Professional experience with React and TypeScript or strong JavaScript; Experience integrating REST APIs on the frontend and handling loading and error states; Familiarity with frontend testing frameworks such as Jest ; Upper-intermediate English level. Nice to haves Experience with React Query or similar server-state libraries; Experience with React Hook Form or other advanced form libraries; Experience with Redis pub/sub or Redis Streams in production; Experience with Infrastructure as Code such as Terraform ; Familiarity with AWS services such as Lambda, API Gateway, EventBridge, and S3; Experience in domains with data sensitivity, auditing, or role-based access requirements. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

New offer

AgileEngine

Software Engineer

Senior

Remote

Krakow, Poland

5,600 - 7,400 USD

🏢 Summary: Senior Backend Engineer role focused on maintaining and evolving a serverless backend platform for a mobile news application using Node.js and TypeScript on AWS. The position involves building and supporting APIs, content ingestion pipelines, and improving production reliability and observability. Requires strong AWS serverless expertise, ownership, and ability to work independently on existing production systems. 🗂️ Requirements: 4+ years of professional software engineering experience, Strong hands-on experience with Node.js and TypeScript, Experience building and maintaining REST APIs and serverless services, Strong AWS production experience (Lambda, API Gateway, DynamoDB, S3, CloudFront, CloudWatch, IAM), Experience with Terraform or similar infrastructure-as-code tools, Experience with CI/CD workflows, builds, tests, and release validation, Strong debugging skills in live production environments, Experience improving legacy or evolving applications, Working knowledge of React, Upper-intermediate English level 📃 Skills: Node.js, TypeScript, AWS, Lambda, APIGateway, DynamoDB, S3, CloudFront, CloudWatch, IAM, Terraform, CI/CD, SQS, EventBridge, SSM, WAF, VPC, NAT, Sentry, React 🏢 Description: ID73087 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Backend Engineer to maintain and evolve the backend platform powering a mobile news application, working across Node.js and TypeScript services running on AWS Lambda. You will support content ingestion pipelines, APIs for mobile clients, and WebView rendering, while improving production reliability and observability using CloudWatch, Sentry, and Terraform-managed infrastructure. The role requires strong AWS serverless depth, high ownership, and the ability to understand and improve an existing production system independently. What you will do Build, maintain, and improve Node.js/TypeScript backend services running on AWS Lambda; Develop and support APIs used by mobile clients, content systems, WebViews, and internal workflows; Support content ingestion, article payload generation, audio generation, navigation feeds, top stories, video feeds, and search; Work with AWS services including Lambda, API Gateway, CloudFront, DynamoDB, S3, SQS/DLQs, EventBridge, SSM, WAF, CloudWatch, IAM, VPC, and NAT; Improve reliability, observability, scalability, and maintainability of production systems; Investigate production issues using CloudWatch logs, metrics, alarms, Sentry, dashboards, and deployment history; Write and improve tests, build scripts, package validation, and local checks that mirror CI; Refactor legacy or fast-evolving code paths while preserving production behavior; Document setup steps, operational decisions, implementation details, and incident learnings. Must haves 4+ years of professional software engineering experience ; Strong hands-on experience with Node.js and TypeScript backend development; Experience building and maintaining REST APIs, serverless services, and backend integrations; Strong AWS production experience, especially Lambda , API Gateway , DynamoDB , S3 , CloudFront , CloudWatch , and IAM ; Experience with Terraform or similar infrastructure-as-code tooling; Experience with CI/CD workflows, package-level builds, tests, and release validation; Strong debugging skills for live production systems; Ability to understand existing systems, business logic, and operational constraints quickly; Experience improving legacy or evolving applications; Working knowledge of React for light frontend/template support; High ownership mindset and ability to work independently in a remote environment; Clear written and verbal communication; Strong attention to maintainability, observability, and code quality; Upper-intermediate English level. Nice to haves Experience with media, publishing, CMS, or content-delivery systems; Experience with CloudFront Functions, API keys, caching, and edge routing; Experience with DynamoDB streams, EventBridge schedules, SQS dead-letter queues, and asynchronous workflows; Experience with Sentry, structured logging, CloudWatch Logs Insights, and production dashboards; Experience with React, Vite, Storybook, or WebView-rendered content; Experience supporting applications that evolved from small internal tools into larger production platforms; Experience using AI-assisted development tools responsibly as part of a professional workflow. The benefits of joining us Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

Technology

AgileEngine

Full Stack Engineer

Senior

Remote

Krakow, Poland

4,000 - 7,400 USD

🏢 Summary: The offer is for a Middle/Senior Full Stack Engineer to enhance and maintain an internal dashboard platform hosted on Microsoft Azure, integrating Salesforce, Jira, ERP systems, and Azure applications. The role involves building backend services and APIs with Node.js, maintaining frontend components, and configuring Azure networking and security. It requires end-to-end ownership of technical delivery and system reliability. 🗂️ Requirements: 4+ years of software engineering experience or relevant degree, Strong hands-on experience with Node.js, Experience building and consuming REST APIs, Experience with Microsoft Azure services, Knowledge of Azure networking and security, Experience with relational databases, Experience with HTML, JavaScript, and CSS, Ability to work independently and own technical delivery, Basic understanding of Salesforce, Upper-intermediate English level 📃 Skills: Node.js, JavaScript, HTML, CSS, Azure, REST, SQL, Salesforce, Jira, ERP, APIs, SSO, EntraID 🏢 Description: ID70850 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Middle/Senior Full Stack Engineer to enhance and maintain an internal dashboard platform hosted on Microsoft Azure, building integrations between Salesforce, Jira, ERP systems, and Azure-hosted applications. You will develop backend services and APIs using Node.js, maintain frontend functionality in JavaScript and HTML, and configure Azure networking and security components as the primary engineering contributor on the project. The role requires strong end-to-end ownership and the ability to translate business requirements into reliable technical solutions independently. What you will do Enhance and maintain an existing internal dashboard platform hosted on Microsoft Azure; Design, develop, and support integrations between Salesforce, Jira, ERP systems, and Azure-hosted applications; Build and maintain backend services, APIs, and data integrations using Node.js; Develop and maintain frontend functionality using HTML, JavaScript, and CSS; Work closely with the Project Manager to translate business requirements into technical solutions and deliverables; Configure and support Azure-based infrastructure components, including network and security configurations such as IP whitelisting; Ensure system reliability, performance, and scalability across integrated platforms; Troubleshoot and resolve technical issues throughout the software development lifecycle; Act as the primary engineering contributor for the project, taking ownership of technical delivery and execution. Must haves 4+ years of professional software engineering experience or a degree in Computer Science, Software Engineering, or a related field ; Strong hands-on experience with Node.js development; Experience building and consuming REST APIs and system integrations; Experience working with Microsoft Azure cloud services; Knowledge of Azure networking and security concepts, including IP whitelisting; Experience with Azure SQL Database or similar relational database technologies; Experience with HTML , JavaScript , and CSS ; Ability to work independently and take ownership of end-to-end technical delivery; Basic understanding of Salesforce ; Upper-intermediate English level. Nice to haves Experience integrating with Salesforce APIs ; Knowledge of Jira APIs and workflow automation; Experience implementing Single Sign-On (SSO) solutions using Microsoft Entra ID . The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!