Senior Full Stack Engineer

🏢 Summary: Full-time Senior Full Stack Engineer role focused on building and enhancing a SaaS marketplace platform hosted on AWS, using React and JavaScript technologies. The position involves developing complex back-end logic and contributing to a global engineering team. The role requires overlap with CET working hours and emphasizes high-quality, test-driven development. 🗂️ Requirements: 6+ years of full-stack development experience, 4+ years of experience with Node.js and/or Python, 4+ years of experience with React, Strong knowledge of JavaScript and TypeScript, Experience with ES6, Ability to write standards-compliant HTML and CSS, Experience with Test Driven Development, Familiarity with Git, Knowledge of Linux or Unix-based systems, Experience with RESTful web services 📃 Skills: React, JavaScript, TypeScript, Node.js, Python, HTML, CSS, TDD, Git, Linux, Unix, REST, AWS, ES6 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Engineer with React and JavaScript for a full-time position (40 hours per week) in Europe. Our client is a leading on-site work marketplace seeking creative and skilled developers to join the global engineering team. The mission is to design and develop technology that improves users' lives while providing an exceptionally high level of service. The cutting-edge technology SaaS solution hosted on AWS that enables today's and tomorrow’s Gig economy. Overlap till 7 pm CET. Requirements: 6+ years of experience in full-stack development. 4+ years of experience with Node.js and/or Python, React. Strong knowledge of JavaScript/TypeScript, ES6, and React. Understanding of writing clean, standards-compliant HTML and CSS. Strong focus and experience in Test Driven Development. Familiarity with the Git version control system. Knowledge of Linux or other Unix-based systems (Ubuntu/Debian is a plus). Understanding of web services-based solutions (REST specifically). Strong written and verbal communication skills. Ability to work well with others as part of a team and across teams. Ability to break down more significant initiatives into manageable pieces. Upper-intermediate level of English. Nice to have: Experience with Preprocessor (LESS/Sass). Experience working with offshore teams. Experience with React-native. Responsibilities: Participate in developing a feature connected with complex back-end logic for the client-worker part. Take part in team meetings, including daily stand-ups and backlog refinement sessions. Provide code refactoring when needed. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior Full-Stack Engineer role focused on designing and building scalable, high-performance data-driven applications using C# and modern web technologies. The position involves end-to-end development in an Agile environment, including architecture, coding, testing, and optimization of web and API solutions. The role requires strong experience with secure coding practices, CI/CD, and AI tools within the SDLC. 🗂️ Requirements: BSc in Computer Science, STEM, or equivalent experience, 7+ years of experience building scalable, high-performance data-driven applications, Experience designing service-based or tiered web and mobile applications, Strong experience with C#, Experience with WCF or Web API, Experience with SQL Server, Experience using AI tools within the SDLC, Experience working in a CI/CD environment, Knowledge of secure coding practices aligned with OWASP, Experience working in Scrum or Kanban environments 📃 Skills: C#, WCF, WebAPI, SQLServer, AI, OWASP, Scrum, Kanban, CI/CD, REST 🏢 Description: Svitla Systems Inc. is looking for a Senior Full-Stack Engineer (C#/React) for a full-time position (40 hours per week) in Europe. Our client is a leading global provider that gathers information and reports to enhance the environmental and social impacts on the business. Responsibilities: Participate in the Agile software development (Scrum/Kanban) from concept design, to full-stack code and testing. Write concise code, clear, well-tested, well-documented and with quality that adhere to industry best practices. Optimize code for quality, performance, scalability, efficiencies and security; through testing, code scanning, refactoring and monitoring. Collaborate with product owners to define/refine requirements, break down into development tasks, estimate effort, and plan milestones & deliverables. Develop and maintain UI applications (web, mobile, etc.) and/or web APIs (RESTful & messaging-based). Identify opportunities for innovation, improvement of software architecture and cloud infrastructure; and/or offer new ideas. Advocate for simplicity, reliability, manageability, scalability, extensibility, reusability and performance. Be a proactive team member who contributes, collaborates and demonstrates positive behaviour. Provide development expertise to team members through education and review. Always open to new ideas and encourages innovative practices amongst peers. Makes sure to constantly address technical debt - escalating when it becomes a risk to quality or timely delivery of our software. Carries out root cause analysis on defects to ensure fixes are happening in the right way. Requirements: BSC in Computer Science, STEM (Science, Technology, Engineering, and Math), or equivalent work experience. 7+ years of experience designing and building scalable, high-performance data-driven software applications. Experience designing service-based and/or tiered web and mobile applications. Excellent experience with C#. Web Services (WCF/Web API), SQL Server. Experience with JavaScript, React, TypeScript, jQuery, HTML, CSS, and SASS is desired. Experience with cloud deployment models (Azure), pipelines, and CI/CD is desired. Experience utilizing AI tools within projects and to support aspects of the SDLC is essential. Understanding and adhering to secure coding practices that meet OWASP standards. Experience working in a continuous integration and deployment environment. Experience practicing Scrum/Kanban and the ability to adapt to Scrum values. Strong analytical and problem-solving skills. Works effectively and independently in a dynamic team environment. Proven time management, organizational, and follow-up skills to meet deadlines. Quality-oriented with a passion for customer satisfaction. Excellent interpersonal and communication skills. Demonstrated initiative to learn and experiment with new technologies and processes. Strong work ethic and professionalism. Nice to have: Experience with C++ What we offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community

🏢 Summary: Full-time Senior Full Stack Engineer role building and scaling a high-throughput cloud platform for call tracking, marketing attribution, real-time analysis, and AI-driven workflows. The position involves hands-on development across backend and frontend systems, contributing to architecture, integrations, and production stability in a fast-moving startup environment. The engineer will work closely with founders to deliver scalable, reliable features with strong ownership and minimal oversight. 🗂️ Requirements: Senior-level full stack engineering experience in production environments, Strong backend development experience with Node.js, Strong frontend development experience with React or similar frameworks, Experience designing and maintaining complex web applications and APIs, Experience with relational databases and production data models, Knowledge of PostgreSQL or similar relational databases, Understanding of REST APIs and distributed system design, Experience integrating third-party APIs and external systems, Ability to debug and troubleshoot production systems, Experience balancing scalability, performance, and maintainability 📃 Skills: Node.js, React, JavaScript, PostgreSQL, SQL, REST, APIs, Redis, Python, HTML, CSS, Git, Cloud, AI 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Engineer for a full-time position (40 hours per week) in Europe. Our client is building an advanced cloud platform for call tracking, marketing attribution, real-time call analysis, and intelligent workflow automation in the pay-per-call and lead generation space. The company is in a hypergrowth phase and is actively scaling both its product platform and engineering capability. The platform combines high-throughput infrastructure, deterministic backend systems, real-time integrations, and AI-driven functionality to support transcription, summarization, extraction, scoring, and increasingly sophisticated agent-enabled workflows. You'll operate with a high degree of independence and make meaningful contributions across both backend and frontend systems. It is a hands-on senior engineering role for someone comfortable working directly with founders, shipping quickly, solving difficult production problems, and contributing to architectural and implementation decisions in a fast-moving startup environment. This role is best suited to an engineer with strong technical depth, sound judgment, product awareness, and the ability to move quickly without creating unnecessary technical debt. The right candidate will not need a heavy process, extensive oversight, or narrow task-by-task direction. This person should be able to step into an evolving system, understand the broader technical and business context, and deliver high-quality work in a practical, efficient way. The engineer will work closely with the founders and the rest of the engineering team, contributing directly to core product and platform development. The client has made it clear that they value engineers based on their performance in a real working environment, not on artificial interview exercises or theoretical problem-solving detached from production realities. Requirements: Strong experience as a Senior Full Stack Engineer, with clear ownership of both backend and frontend production systems. Solid experience in backend engineering with Node.js in real-world production environments. Expertise in frontend engineering with React or similar modern JavaScript frontend frameworks. Understanding of design, build, and maintain complex web applications and APIs that support meaningful business workflows. Strong experience working with relational databases, application data models, and production data access patterns. Knowledge of PostgreSQL or similar relational database technologies in production systems. In-depth understanding of REST APIs, asynchronous workflows, distributed integration patterns, and service-based application design. Experience integrating with third-party APIs and external systems in production environments. Ability to work effectively in evolving codebases and make good engineering decisions without requiring excessive structure or hand-holding. Expertise in debugging and troubleshooting across application logic, integrations, and production issues. Ability to balance delivery speed with long-term maintainability in a startup or high-growth environment. Nice to have: Experience working in startup or hypergrowth environments where engineers are expected to take ownership and move quickly. Familiarity with Redis, caching strategies, job processing, or event-driven application behavior. Exposure to Python and collaboration with AI or data-oriented systems. Experience building or supporting systems with high throughput, near-real-time workflows, or operationally sensitive business logic. Background in AdTech, MarTech, call tracking, attribution platforms, lead generation systems, or analytics-heavy products. Experience building internal operational tooling and admin workflows for technical or business users. Exposure to cloud-native environments and scalable distributed systems. Experience collaborating closely with technical founders, product leadership, or senior engineering stakeholders. Responsibilities: Design, build, and maintain production-grade application features across both backend and frontend systems, with strong attention to scalability, performance, reliability, and maintainability. Develop backend services and APIs using Node.js to support platform capabilities such as workflow orchestration, system integrations, feature logic, internal tooling, and real-time operational processing. Build and enhance frontend applications using React or similar modern frontend technologies to support dashboards, management interfaces, internal tools, and user-facing platform capabilities. Take ownership of significant technical areas and deliver solutions with minimal day-to-day oversight, while collaborating closely with founders and other senior engineers. Work on systems that support high-volume workflows, external integrations, and operationally important product capabilities where responsiveness and reliability matter. Implement and maintain integrations with external partner platforms, APIs, and data-driven systems, including CRM platforms, call-tracking systems, and other third-party services that are central to the product ecosystem. Contribute to architectural discussions and technical decisions related to application structure, data flow, performance optimization, maintainability, and production stability. Investigate and resolve production bottlenecks, system issues, and integration challenges in a practical, efficient manner. Collaborate with AI and data engineering team members where needed to connect backend and frontend product capabilities with intelligent workflows such as transcription, data extraction, scoring, or analytics-driven features. Help establish sound engineering patterns and raise the quality bar as the team scales, including code quality, implementation discipline, and pragmatic technical decision-making. Participate in a fast-moving engineering culture where new features, experiments, and improvements are shipped continuously. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Senior Full Stack Developer role focused primarily on backend development with Python and FAST API, combined with React-based frontend work in a hybrid B2B model. The position involves designing scalable web applications, building high-performance APIs, and working with relational and NoSQL databases. Strong backend expertise is essential, with intermediate frontend skills and experience in modern DevOps practices. 🗂️ Requirements: 8+ years of professional software development experience, Expert proficiency in Python, Strong experience with FAST API, Strong knowledge of relational and NoSQL databases, Experience with SQLAlchemy ORM, Deep understanding of data structures and algorithms, Experience building RESTful APIs and microservices, Proficiency in writing unit and integration tests in Python, Strong knowledge of ReactJS and NodeJS, Experience with Redux or MobX, Familiarity with React Query, Experience with Material UI, CSS, and HTML, Experience with Jest and Cypress, Solid understanding of JavaScript and TypeScript 📃 Skills: Python, FASTAPI, SQLAlchemy, PostgreSQL, MySQL, MongoDB, DynamoDB, ReactJS, NodeJS, Redux, MobX, ReactQuery, MaterialUI, CSS, HTML, Jest, Cypress, JavaScript, TypeScript, Docker, Kubernetes, AWS, Azure, GCP, RabbitMQ, Kafka 🏢 Description: Working mode: Hybrid mode ( 2-3 days in a week from the office in Wroclaw or Warsaw) Experience Level: 8+ Years Contract Type: B2B About the Role We are looking for a highly skilled Senior Full Stack Developer with a primary focus on Python and FAST API to join the development team. The ideal candidate is a Python expert capable of architecting robust backend services. While React skills are required, we are flexible regarding the depth of frontend expertise (Intermediate level is acceptable), provided the backend strength is exceptional. Key Responsibilities Backend Architecture: Design, develop, and maintain scalable web applications using Python and FAST API . API Development: Build high-performance RESTful APIs and microservices, ensuring low latency and high availability. Database Management: Work with relational and NoSQL databases, utilizing ORMs like SQLAlchemy to design efficient database schemas and queries. Frontend Development: Develop and maintain user-facing features using ReactJS , ensuring the technical feasibility of UI/UX designs. Code Quality: Write clean, maintainable, and testable code; perform unit testing to ensure robustness. DevOps: Implement and manage CI/CD pipelines to streamline deployment processes. Collaboration: Work closely with cross-functional teams (Product, QA, and Design) in a hybrid working environment. Mandatory Technical Skills 1. Backend (Core Strength): Languages: Expert proficiency in Python . Frameworks: Strong experience with FAST API (Must-have). Experience with SQLAlchemy is highly preferred. Fundamentals: Deep understanding of data structures, algorithms, and space-time complexity. Database: Strong understanding of Relational (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, DynamoDB) databases. Testing: Proficiency in writing unit tests and integration tests for Python applications. 2. Frontend (Intermediate Level): Libraries: Strong knowledge of ReactJS and NodeJS . State Management: Experience with React workflows such as Redux or MobX . Tooling: Familiarity with React Query . Styling: Experience with Material UI , CSS , and HTML . Testing: Experience with frontend testing tools like Jest and Cypress . JavaScript: Solid understanding of JavaScript , TypeScript , and browser rendering behavior. Good to Have Experience with cloud platforms (AWS, Azure, or GCP). Knowledge of containerization (Docker, Kubernetes). Understanding of microservices architecture and message queues (RabbitMQ, Kafka).

🏢 Summary: Senior Full Stack Developer role focused on architecting and delivering high-performance web applications using React and Node.js. The position involves leading system design, building scalable front-end and back-end solutions, and overseeing cloud-based deployments and DevOps processes. The role includes technical ownership of microservices, APIs, databases, and application performance in a hybrid Warsaw-based setup. 🗂️ Requirements: 7+ years full stack development experience, 2+ years in senior or technical lead role, Expert-level React.js with Hooks and Redux, Advanced JavaScript ES6+ proficiency, Strong Node.js and Express.js experience, Experience designing REST or GraphQL APIs, Experience with OAuth, JWT, sessions, RBAC, Database design and optimization with PostgreSQL, MySQL, or MongoDB, Hands-on Docker experience, Experience with AWS, Azure, or GCP, CI/CD pipeline management experience, Proficiency with Git workflows, Bachelor’s or Master’s in Computer Science or related field 📃 Skills: React, Redux, JavaScript, HTML5, CSS3, Node.js, Express, GraphQL, REST, OAuth, JWT, RBAC, PostgreSQL, MySQL, MongoDB, Docker, Kubernetes, AWS, Azure, GCP, Git, CI/CD, Webpack, Babel, Vite 🏢 Description: 🧩 About the Company Our client is a rapidly growing US-based technology firm with global operations. With a strong commitment to innovation and quality engineering, the company is building a new engineering hub in Warsaw. This is your opportunity to join a high-performing team and play a pivotal role in developing next-generation digital solutions for the private capital markets. 📍 Location & Setup Start remotely and transition to a hybrid model based in Warsaw (3 days/week in the office in the coming months). 🧠 The Role: Senior Full Stack Developer (React & Node.js) We’re looking for an expert-level Senior Full Stack Developer with at least 7 years of professional experience in designing, architecting, and delivering high-performance web applications. You will take ownership of complex technical challenges across both the front-end and back-end, drive architectural decisions, and provide technical leadership and mentorship within the software development lifecycle. 🔧 Key Responsibilities Technical Leadership: Architect and develop scalable, responsive UIs with React.js, Redux, and modern JavaScript (ES6+). System Design: Design, build, and scale advanced server-side applications, microservices architecture, and RESTful/GraphQL APIs with Node.js and Express. Data Architecture: Lead database design, optimization, and integration strategies (PostgreSQL, MySQL, or MongoDB). Quality Assurance: Define testing strategies, write robust unit/integration tests, and establish efficient debugging protocols for the team. DevOps & Deployment: Oversee and optimize CI/CD pipelines, containerization using Docker, and cloud deployments. Agile Mentorship: Lead agile collaboration with product managers, designers, and engineers, while mentoring mid-level and junior developers. Performance: Proactively monitor system performance, identify bottlenecks, and maintain high-availability production-grade applications. Standards: Establish and maintain comprehensive technical documentation and coding standards. 📌 What We’re Looking For Front-End: Expert-level experience with React.js, Hooks, Redux, and complex component-based architecture. Deep mastery of HTML5, CSS3, and ES6+. Advanced configuration and optimization experience with build tools like Webpack, Babel, or Vite. Back-End: Senior-level proficiency in Node.js & Express.js for enterprise applications. Extensive API design and architecture experience (GraphQL highly preferred, alongside REST). Deep understanding and implementation experience with advanced security and authentication protocols: OAuth, JWT, sessions, and RBAC. Databases & DevOps: Proven experience in scaling and optimizing relational and non-relational databases (PostgreSQL, MySQL, or MongoDB). Solid hands-on experience with Docker; Kubernetes experience is highly advantageous. Demonstrated experience designing and deploying applications on cloud platforms (AWS, Azure, or GCP). Advanced proficiency with Git workflows and driving Agile/Scrum methodologies. 🎓 Qualifications Bachelor’s or Master’s in Computer Science or a related field. 7+ years of hands-on experience in full stack development. 2+ years of experience in a senior or technical lead capacity. Proven track record of architecting, deploying, and maintaining high-traffic production applications. 💡 Soft Skills Strategic, analytical thinker and highly effective problem-solver. Strong technical leadership, team collaboration, and cross-functional communication skills. Self-motivated with excellent time management and the ability to drive projects autonomously. Passion for continuous learning, adopting new technologies, and sharing knowledge with the team. 🎁 What’s Offered Competitive salary up to $6,200 USD/month. Hybrid remote role with 3 days form office in the heart of Warsaw Generous Paid Time Off (PTO). Comprehensive full benefits package. The unique chance to shape the technical foundation of a new engineering hub and lead high-impact projects. A supportive, innovation-driven work environment that values technical excellence.

🏢 Summary: A fully remote Full Stack Engineer role in a late-stage product company building a new engineering team in Poland. The position focuses on developing scalable, production-grade applications using TypeScript, React, and Node.js across the stack. Engineers collaborate cross-functionally to deliver end-to-end features with strong emphasis on quality, performance, and reliability. 🗂️ Requirements: Strong proficiency in TypeScript, Experience with React, Experience with Node.js or server-side TypeScript, Understanding of testing practices, Experience with CI/CD, Experience with version control, Ability to work in a collaborative, fast-paced environment 📃 Skills: TypeScript, React, Node.js, CI/CD, Git, APIs, Microservices, AWS, GCP, Azure, Testing 🏢 Description: A late-stage (Series D), well-funded product company is building a brand-new, fully-remote engineering team in Poland. We're looking for talented Full Stack Engineers who can build high-quality, scalable applications using TypeScript , React , and modern backend frameworks. You'll work closely with product, design, and other engineers to deliver features end-to-end. While financial markets experience is a plus, it is not required - strong engineering fundamentals matter more. We are open to candidates who specialize in only front-end or only back-end development, as well as true full-stack engineers. What You'll Do Design, build, and maintain production-grade applications using TypeScript across the stack. Develop intuitive, performant user interfaces using React and modern front-end tooling. Build and maintain backend services, APIs, and integrations (Node.js / TypeScript). Collaborate with product managers and designers to translate requirements into technical solutions. Write clean, testable, maintainable code with strong attention to performance and reliability. Participate in code reviews, architecture discussions, and continuous improvement initiatives. Troubleshoot issues across the stack and contribute to a culture of engineering excellence. Required Skills Strong proficiency in TypeScript . Experience with React for front-end development. Experience with Node.js , server-side TypeScript, or similar backend frameworks. Solid understanding of modern software engineering practices: testing, CI/CD, version control, code reviews. Ability to work in a fast-paced, collaborative environment. Nice to Have Experience working in financial markets , fintech, or trading systems. Familiarity with cloud platforms (AWS, GCP, Azure). Experience with microservices, event-driven architectures, or distributed systems. Exposure to data visualization libraries or real-time data applications. Experience with performance optimization on either the front-end or back-end.

🏢 Summary: Full-time Senior Back End Python Developer role focused on building and maintaining scalable, high-quality web applications in a cloud-based environment. The position involves designing, developing, and optimizing backend services while collaborating in Agile squads. The tech stack includes modern Python frameworks, cloud infrastructure, CI/CD pipelines, and containerized deployments. 🗂️ Requirements: 5+ years backend development experience with Python, Experience with Python frameworks, Strong understanding of web development lifecycle, Experience working in Agile methodologies, Ability to design, develop, deploy, and maintain scalable applications 📃 Skills: Python, Django, SQLAlchemy, Celery, RabbitMQ, OpenAPI, PostgreSQL, Redis, React, TypeScript, Playwright, GitHub, Actions, Azure, Pipelines, Kubernetes, Terraform, Heroku, GCP 🏢 Description: Svitla Systems Inc. is looking for a Senior Back End Python Developer for a full-time position (40 hours per week) in Poland. Our client is a leading global provider that gathers information and reports to enhance the environmental and social impacts on the business. This role is perfect for someone who thrives in building scalable, high-quality applications. Tech Stack Backend: Python, Django + SQLAlchemy, Celery + RabbitMQ, OpenAPI; DB: PostgreSQL, Redis; Frontend: React + TypeScript, OpenAPI, Playwright; CI/CD: GitHub Actions, Azure Pipelines; Infrastructure: k8s+Terraform, Azure, Heroku, GCP. Requirements 5+ years of experience in backend with Python and its frameworks. Comprehensive understanding of the web development process: design, development, deployment, and maintenance. Exceptional problem-solving skills and attention to detail. Experience with Agile development methodologies. The ability to plan, track, and ensure timely delivery Strong English communication and interpersonal skills to effectively collaborate within squads. Nice to have Experience with Java, C++, C#, Rust, Ruby, and Go. Experience in frontend development with React and TypeScript. The ability to manage development projects from conception to completion. Responsibilities Design, develop, and maintain applications collaborating within cross-functional squads such as engineers, designers, and product managers. Actively participate in squad meetings to define, design, and ship new features, ensuring alignment with project goals and timelines. Ensure the performance, quality, and responsiveness of applications, leveraging cross-functional expertise to address complex challenges. Identify bottlenecks, fix bugs, and contribute to improving code quality and test automation within a team-oriented environment. Collaborate with the team to share knowledge and foster a culture where everyone can learn and grow together. Keep abreast of emerging trends and technologies in web development, sharing knowledge and insights with cross-functional teams to drive innovation. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Senior Full Stack Developer role for an international product team focused on building scalable applications using TypeScript, React, Node.js, PostgreSQL, and Kafka. The contract is remote, B2B, initially for 6 months with possible extension, and includes collaboration in an agile international environment with AI-powered development tools. 🗂️ Requirements: 8+ years of commercial software development experience, Strong TypeScript experience, Experience with React, Experience with Node.js, Experience with NestJS, Knowledge of PostgreSQL, Knowledge of REST APIs, Knowledge of Kafka, Experience building scalable systems, Daily use of AI coding tools, English level B2+/C1 📃 Skills: TypeScript, React, Node.js, NestJS, PostgreSQL, REST, Kafka, Claude, Cursor, Codex, Copilot 🏢 Description: co.brick talents — powered by AI, powered by people. Senior Full Stack Developer (TypeScript / React / Node.js) Location: Remote Contract: B2B Rate: Up to 150–160 PLN/hour Duration: 6 months with a strong possibility of extension Start: ASAP About the project We are looking for an experienced Senior Full Stack Developer to join an international product development team. You will work on building and enhancing scalable software solutions in a modern technology stack, collaborating with experienced engineers in an agile environment. Your responsibilities Design, develop, and maintain scalable full stack applications. Build high-quality backend services and modern frontend solutions. Develop and integrate REST APIs. Work with PostgreSQL and Kafka-based architectures. Collaborate with cross-functional, international teams. Apply AI-powered coding tools to improve development efficiency and code quality. Requirements 8+ years of commercial software development experience. Strong experience with TypeScript on both the frontend and backend. Hands-on experience with React and Node.js/NestJS . Solid knowledge of PostgreSQL , REST APIs , and Kafka . Experience designing and building scalable systems or software products. Daily use of AI coding tools such as Claude Code, Cursor, Codex, GitHub Copilot , or similar ( must have ). Very good English communication skills ( B2+/C1 , must have ). Nice to have Experience building SaaS products. Experience developing on-premise software solutions. Recruitment process The recruitment process includes a technical assignment (approximately 5 hours) . During the task, you are welcome and encouraged to use AI coding tools , as we value modern software development practices.

🏢 Summary: Full Stack Architect role focused on building and optimizing data-intensive applications using React and .NET, with strong emphasis on AWS-based infrastructure and scalable architecture. The position involves designing, developing, and maintaining full-stack solutions, optimizing MySQL and Elasticsearch data layers, and managing containerized deployments with ECS and Kubernetes. The role requires hands-on architectural improvements, performance tuning, and end-to-end ownership from development to production deployment. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field or equivalent experience, Minimum 5 years of experience in front-end and application development, Strong proficiency in JavaScript and React, Proficiency in .NET and Microsoft development tools, Strong experience with MySQL 8 including optimization and schema design, Hands-on experience with Elasticsearch, Deep understanding of AWS infrastructure and core services, Experience with ECS and Kubernetes for container orchestration, Experience with Docker, Expertise in responsive web design and cross-browser compatibility, Experience building data-intensive and scalable applications, Experience working in Agile environments 📃 Skills: JavaScript, React, .NET, MySQL, Elasticsearch, AWS, ECS, Kubernetes, Docker, VisualStudio, VSCode, HTML, CSS, Agile 🏢 Description: Svitla Systems Inc. is looking for a Full Stack Architect with React and .NET for a full-time position (40 hours per week) in Europe. Our client specializes in delivering digital forensic and incident response solutions tailored for businesses, public safety organizations, and service providers engaged in the investigation of cybercrimes. Requirements: Education: Associate/Bachelor's/Master's degree in Computer Science or a related field, or equivalent professional experience. Experience: Minimum of 5 years in front-end development, UI design, and application development. Tech Stack: Fluency in JavaScript and React . Proficiency in the Microsoft/.NET stack and development lifecycle tooling (Visual Studio / VS Code). Strong experience with MySQL 8 (optimization, schema design, and complex queries). Hands-on experience with Elasticsearch for full-text search and analytics. Infrastructure & DevOps: Deep understanding of AWS infrastructure and core services. Experience deploying and managing applications using ECS (Elastic Container Service) and K8S (Kubernetes) . Familiarity with Docker and container orchestration. Design & Standards: Expertise in responsive design for both mobile and desktop views. In-depth knowledge of cross-browser compatibility and modern web standards. Soft Skills & Methodology: Experience in Agile development methodologies. Ability to work independently and within cross-functional teams to produce high-quality deliverables. Proven track record of building data-intensive applications with a focus on performance and scalability. Responsibilities: Full-Stack Development: Develop and maintain complex full-stack applications, ensuring seamless integration between React front-ends and .NET back-ends. System Analysis: Analyze the current application stack, identifying bottlenecks in data-intensive workflows and recommending architectural improvements. Infrastructure Management: Implement and manage scalable solutions on AWS , leveraging ECS/K8S for container orchestration and ensuring high availability. Data Strategy: Architect and optimize data storage solutions using MySQL 8 and Elasticsearch to handle large-scale datasets efficiently. Introspection & Monitoring: Help implement tools to provide system introspection, logging, and performance monitoring across the distributed stack. Collaboration: Work closely with cross-functional teams to bring software solutions from initial concept to production deployment. Code Quality: Write clean, efficient, and well-documented code, adhering to industry best practices and internal coding standards. Innovation: Stay up-to-date with emerging technologies (particularly in the AWS and CNCF ecosystems) to suggest process enhancements and technical upgrades. Execution: Meet required schedules and release cycle timelines in a fast-paced environment. Adaptability: Rapidly learn and integrate new business models, concepts, and technologies into the existing ecosystem.

🏢 Summary: Full-time Senior Full Stack Software Engineer role focused on building and scaling backend systems for a large job marketplace platform. The position centers on developing and maintaining services that ingest and process job data from external sources while supporting automation and AI-driven initiatives. The role combines backend-heavy development with light frontend maintenance in a distributed EMEA-based setup. 🗂️ Requirements: Strong experience in Java backend development, Proficiency with Spring Boot for scalable services and microservices, Experience designing and developing REST APIs, Familiarity with gRPC communication, Experience with messaging systems such as Kafka or RabbitMQ, Advanced knowledge of MySQL, Experience with MongoDB, Experience building scalable backend systems, Ability to contribute to system design, Basic knowledge of React, Basic knowledge of JavaScript or TypeScript 📃 Skills: Java, Spring, SpringBoot, REST, gRPC, Kafka, RabbitMQ, MySQL, MongoDB, React, JavaScript, TypeScript, GraphQL, AI, Automation, Caching 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Software Engineer for a full-time position (40 hours per week) in Europe. Our client is one of the world’s largest and fastest-growing job sites. Project Overview: Marketplace Engineering, specifically within the Employer Jobs Platform (EJYPT), leads the Aggregation Teams responsible for collecting and ingesting indexed job data from various external sources, including XML feeds, scraped job sites, and the job sync API used by third-party partners. The core mission of this group is to increase both the number and coverage of jobs available on the site by continuously improving how jobs are discovered, ingested, and maintained across these external sources. Timezone Coverage: EMEA hours, as long as you can attend meetings up to 11 am CDT. Requirements: Strong experience in Java backend development. Knowledge of Spring Boot for building scalable backend services and microservices. Understanding of REST API design and development; familiarity with gRPC communication. Understanding of messaging systems such as Apache Kafka or RabbitMQ . Advanced knowledge of databases with MySQL (primary) and MongoDB . Experience building backend systems at scale and contributing to system design. 1+ years of experience working with React and JavaScript/TypeScript for maintaining existing frontend components. Nice to have: Exposure to GraphQL (light usage). Experience with AI or automation workflows . Familiarity with caching technologies such as Valky or similar caching solutions. Responsibilities: Maintain existing backend systems. Build new features. Support automation initiatives (AI-driven extraction/config). Potentially develop tooling for AI prompts/models. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!