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June 23, 2026

Backend Engineer (AdTech)

Senior • Remote

5,600 - 7,400 USD

Krakow, Poland

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 to support scalability, reliability, and developer productivity
  • Collaborate with product, data, and partner teams to translate business requirements into technical solutions
  • Provide technical leadership through design reviews and mentoring
  • Contribute to engineering best practices and long-term platform vision
  • Participate in hiring and team growth

Must Haves

  • 5+ years of software development experience building scalable systems
  • Experience with AdTech ecosystems (DSPs, SSPs, ad exchanges, affiliate programs, Prebid.js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity solutions, ad operations workflows)
  • Deep understanding of algorithms, data structures, networking, and databases
  • Experience designing and scaling distributed systems with focus on performance, observability, and fault tolerance
  • Strong architectural decision-making skills
  • Experience influencing and mentoring senior engineers
  • Excellent communication and collaboration skills
  • Availability to work until 1pm EST
  • Comfortable in a fast-paced, high-autonomy environment
  • Upper-intermediate English level

Nice to Haves

  • Experience with complex ETL flows and high-throughput systems
  • Experience with e-commerce and catalog management
  • Familiarity with Python, Django, Kubernetes, PostgreSQL, and AWS

Benefits

  • Professional growth through mentorship, TechTalks, and personalized growth roadmaps
  • Competitive USD-based compensation and budgets for education, fitness, and team activities
  • Opportunity to work on modern solutions with top-tier clients
  • Flexible schedule with remote and office options

Recruitment Process

Asynchronous stage:

  • Short online form
  • 30–60 minute skills assessment via Codility
  • 5-minute introduction video

Synchronous stage:

  • Technical interview with engineering team
  • Final interview with future teammates

If it’s a match — you’ll get an offer!

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7,400 - 8,398 USD

🏢 Summary: Tech Lead Development Manager role leading a regional, cross-functional engineering pod in a 24/7 follow-the-sun model, focused on ASPM integrations and AI-enabled secure code scanning within SDLC. The position combines hands-on technical leadership, secure code reviews, and ownership of delivery velocity in a highly regulated enterprise environment. 🗂️ Requirements: 8+ years of software engineering and architecture experience, 3+ years in technical leadership or engineering management, Expertise in Python and Java, Strong experience with DevSecOps practices, Experience with Cloud Security and CI/CD ecosystems, Experience managing distributed or follow-the-sun engineering teams, Experience in highly regulated enterprise environments (Finance, Healthcare, Defense), Ability to perform secure code reviews and guide infrastructure architecture, Upper-intermediate English level 📃 Skills: Python, Java, DevSecOps, Cloud, Security, CI/CD, ASPM, SDLC, AI, Architecture 🏢 Description: ID70130 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 Tech Lead Development Manager to serve as the regional delivery anchor for a follow-the-sun engineering program, leading a cross-functional pod of engineers and data scientists across ASPM integrations and AI-enabled SDLC secure code scanning. You will facilitate clean shift hand-offs with peer leads across timezones, own regional technical escalations, perform secure code reviews, and drive continuous delivery velocity across a 24-hour cycle in a highly regulated enterprise environment. The role requires 8+ years of engineering experience including 3+ years in technical leadership. What you will do Lead a localized, cross-functional pod of engineers and data scientists, ensuring continuous feature momentum across the 24-hour cycle; Facilitate seamless shift hand-offs with peer managers in other timezones to maintain 24/7 delivery velocity; Oversee the technical delivery of core workstreams, including Application Security Posture Management (ASPM) integrations and AI-enabled SDLC secure code scanning; Act as the primary escalation point for regional technical challenges, performing secure code reviews and guiding infrastructure architecture. Must haves 8+ years of software engineering and architecture experience , with at least 3+ years in a technical leadership or engineering management role ; Deep expertise in Python and Java , alongside modern DevSecOps , Cloud Security , and CI/CD ecosystems; Proven commercial experience managing distributed or follow-the-sun engineering teams in highly regulated enterprise environments (Finance, Healthcare, Defense); Complete technical ownership of the system’s structural integrity, performance, and security, with the ability to provide creative direction and mentorship; Upper-intermediate English level. Nice to haves Prior experience building or implementing AI-assisted developer workflows or intelligent agents. 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

Frontend Engineer ID55143

Senior

Remote

Krakow, Poland

4,200 - 7,700 USD

🏢 Summary: Senior/Lead Frontend Engineer role focused on building and leading the development of modern, high-performance React web applications. The position involves architecting scalable frontend solutions, creating reusable UI components, and driving best practices in code quality, accessibility, and performance. You will influence technical decisions, mentor developers, and contribute to product experience and frontend architecture. 🗂️ Requirements: University degree in Information Technology or related field or equivalent experience, 7+ years of software development experience focused on modern frontend technologies, Strong experience with React.js and component-based development, Experience building dynamic and customizable layouts, Experience with design systems and reusable UI component libraries, Knowledge of clean code principles and design patterns, Experience with scalable frontend architecture, Experience integrating REST or GraphQL APIs, Experience with state management tools, Experience with modern frontend build tools, Experience with modern styling systems, Professional English communication skills 📃 Skills: React, JavaScript, TypeScript, Redux, Zustand, REST, GraphQL, Vite, Webpack, ESBuild, CSS, Tailwind, styled-components, CSS-in-JS 🏢 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 Senior/Lead Frontend Engineer , you will lead the development of modern web applications, crafting high-performance, scalable, and reusable UI components that bring complex data to life. Working with React and modern frontend architectures, you’ll drive technical decisions, mentor developers, and shape best practices in code quality, accessibility, and performance. This role offers strong influence on product experience and architecture while contributing to a collaborative, innovation-driven environment. What you will do Contribute to the frontend development of new web applications; Design and implement high-performance, maintainable, and reusable UI components; Drive the migration to modern tech stacks and architect scalable features for React applications; Visualize complex data sets using advanced frontend techniques; Ensure best practices in front-end architecture, code quality, accessibility, and testing; Participate in code reviews, technical discussions, and mentorship of developers; Continuously research and advocate for improvements in performance, scalability, and developer experience. Must haves University or college degree in Information Technology or a related field, or relevant work experience; 7+ years of software development experience with a strong focus on modern web frontend technologies; Solid experience with React.js and component-based development; Strong understanding of building dynamic and customizable layouts; Experience building or consuming design systems and reusable UI component libraries; Knowledge of clean code principles, design patterns, and scalable frontend architecture; Experience integrating REST or GraphQL APIs into web applications; Experience with state management tools such as Redux or Zustand ; Experience with build tools such as Vite , Webpack , or ESBuild ; Experience with styling systems such as CSS Modules, Tailwind , styled-components, or CSS-in-JS; Structured and analytical working style with strong team collaboration skills; Excellent English communication skills. Nice to haves German language proficiency. 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

QA Automation Engineer

Mid

Remote

Krakow, Poland

3,700 - 4,940 USD

🏢 Summary: The offer is for a QA Automation Engineer to ensure the accuracy, reliability, and performance of data-driven products within an analytics platform team. The role combines manual and automated testing of APIs, backend workflows, and data transformations, with a strong focus on SQL-based validation. You will work in an Agile environment contributing to regression automation and CI/CD quality integration. 🗂️ Requirements: 2–4 years of QA experience in manual and automation testing, Strong SQL skills including joins, DML/DDL, window functions, Experience in manual API testing, Basic experience with API automation or scripting, Experience with Jira or TestRail, Understanding of CI/CD concepts, Experience with version control systems, Knowledge of QA processes and defect lifecycle, Ability to analyze requirements and design test scenarios, Upper-intermediate English level 📃 Skills: SQL, Postman, Insomnia, Jira, TestRail, GitHub, Bitbucket, CI/CD, Python, Snowflake, Apache, NiFi, S3, AWS, Lambda, Looker, PowerBI, MicroStrategy 🏢 Description: ID69196 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 QA Automation Engineer to ensure the accuracy, reliability, and performance of data-driven products within an analytics platform team. You will validate complex data transformations, API outputs, and backend workflows using SQL, Postman, and automation frameworks, working alongside Product Managers, Data Engineers, and Developers in an Agile environment. The role combines hands-on manual testing with growing automation development responsibilities across APIs and regression suites. What you will do Execute manual and automated tests across APIs, backend pipelines, and analytics outputs; Validate data transformations, business rules, and calculations against requirements; Write SQL queries to confirm data accuracy, identify inconsistencies, and investigate reported issues; Create and maintain test cases, test plans, and execution reports using Jira/TestRail or similar tools; Participate in requirements reviews to identify gaps, ambiguities, and edge cases early; Support automation efforts by creating or updating API test scripts and regression suites; Collaborate with developers and data engineers to troubleshoot defects and verify fixes; Contribute to improving CI/CD test integration and quality gates; Monitor recurring defects and provide visibility into quality trends; Assist in validating releases and confirming readiness for deployment. Must haves 2–4 years of professional QA experience in manual and automation testing; Strong SQL skills (joins, DML/DDL, data validation, window functions, logic validation); Experience testing APIs manually ( Postman , Insomnia , or similar); Basic exposure to API automation frameworks or scripting; Experience using Jira , TestRail , or similar QA management tools; Understanding of CI/CD concepts and version control ( GitHub , Bitbucket ); Ability to analyze functional requirements and propose test scenarios and edge cases; Solid understanding of QA processes, regression cycles, and defect lifecycle; Upper-intermediate English level. Nice to haves Python knowledge (basic scripting level); Experience with Snowflake or other cloud data warehouses; Familiarity with Apache NiFi , S3 , or AWS Lambda ; Experience testing Looker , Power BI , MicroStrategy , or similar BI tools; Backend automation experience (Python-based frameworks); Understanding of data processing, ETL, or large-scale ingestion pipelines; Previous exposure to healthcare, pharma, or analytics data. 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!