Senior Software Engineer

🏢 Summary: Mid-level Full Stack Developer role focused on building and delivering new features for a regulatory compliance platform used by global e-commerce brands. The position involves end-to-end feature development in a modern stack, collaborating in an Agile team from concept to production. You will contribute to high-quality, scalable software using React, Next.js, Node.js, and GraphQL. 🗂️ Requirements: 3+ years of commercial software development experience, Strong knowledge of JavaScript, HTML, CSS, Proficiency in React, Experience with Node.js, Experience with SQL or GraphQL, Familiarity with Git, Experience with CI/CD pipelines, Experience with at least one major cloud provider (AWS preferred), Degree in Computer Science or completion of a reputable coding bootcamp 📃 Skills: JavaScript, HTML, CSS, React, Next.js, Node.js, TypeScript, GraphQL, SQL, AWS, Git, CI/CD, Jira, DevOps 🏢 Description: About Us We are a Gliwice-based IT company supporting a British startup that helps global e-commerce brands (food, supplements, cosmetics) navigate complex regulatory compliance through an intelligent, structured platform. The Role As a Mid-level Full Stack Developer, you will join the product engineering team to implement new features for the platform. You will work in a modern and supportive environment, seeing projects through from concept to delivery while learning from highly skilled senior engineers. Key Responsibilities Full Stack Development: Build and ship new features using React, Next.js, Node.js, and GraphQL. Project Delivery: Collaborate with the team to take features from initial requirements to production-ready code. Code Quality: Participate in code reviews and ensure the delivery of high-quality software. Agile Collaboration: Use tools like Jira/DevOps to manage workflows and contribute to team success in an Agile environment. Requirements Experience: 3+ years of professional software development experience in a commercial environment. Frontend: Strong knowledge of JavaScript/HTML/CSS and proficiency in React. Backend & Data: Experience with Node.js and database programming (SQL/GraphQL). Cloud & DevOps: Familiarity with Git, CI/CD, and at least one major cloud provider (preferably AWS). Education: Degree in Computer Science or completion of a reputable coding bootcamp. Mindset: Proactive learner, strong communicator, and a team player who takes ownership of tasks. Tech Stack: React, Next.js, Node.js, TypeScript, GraphQL, AWS.

🏢 Summary: Senior Full-stack Engineer role focused on building and scaling a modern B2B SaaS platform for subscription-based e-commerce. The position involves end-to-end feature delivery, architectural decisions, and improving system scalability and reliability. High-impact role with strong ownership over technical direction and product evolution. 🗂️ Requirements: 7+ years engineering experience in complex systems, Strong system design skills, Experience designing scalable architectures, Full-stack development experience, Experience building SaaS platforms, Experience with e-commerce systems 📃 Skills: JavaScript, TypeScript, SaaS, Architecture, Scalability, Reliability, APIs, Ecommerce, Payments, Cloud 🏢 Description: Senior Full-stack Engineer Our client is building a modern B2B SaaS platform that enables businesses to launch and scale subscription-based models for physical and digital products. The product sits at the intersection of e-commerce, payments, and developer tooling, with a strong focus on extensibility and developer experience. The team is lean, senior, and highly experienced, backed by strong investors and industry advisors. They operate with high autonomy, fast execution, and strong ownership culture. Role We are looking for a Senior Full-stack Engineer to help shape the next evolution of the platform. You will work across architecture, product, and infrastructure, focusing on scalability, reliability, and developer experience. This is a high-impact role where you will influence both technical direction and product decisions. Responsibilities Build and evolve a scalable SaaS platform Design and deliver new features end-to-end Improve performance, reliability, and system architecture Collaborate with product, design, and growth teams Requirements 7+ years of engineering experience in complex systems Strong architectural and system design skills Ability to choose appropriate technologies per problem Experience working in cross-functional teams Strong communication in Polish and English Startup mindset: ownership, speed, adaptability Experience with e-commerce platforms is a plus Offer High-impact role in a senior engineering team with real product ownership and influence. Competitive salary plus ESOP, fully remote work (Poland), regular team offsites, and modern tooling including MacBook Pro and AI credits. Direct access to founders, investors, and advisors.

🏢 Summary: Senior FullStack Developer role focused on building and scaling high-performance web applications using NestJS and NextJS. The position involves leading architecture decisions, ensuring code quality, and optimizing performance across backend and frontend systems. You will drive scalable, secure solutions and maintain reliable CI/CD and production environments. 🗂️ Requirements: 5+ years of fullstack development experience, Strong experience with NestJS, Node.js, NextJS, TypeScript, Strong knowledge of PostgreSQL and data modeling, Experience building and consuming REST APIs, Experience implementing JWT-based authentication, Ability to design scalable and secure architectures, Experience with CI/CD pipelines and Docker, Experience optimizing frontend performance (SSR, lazy loading, state management), Ability to enforce code quality and conduct code reviews 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, Docker, CI/CD, Kubernetes, ArgoCD, Kafka, RabbitMQ, AWS, SNS, SQS, Terraform, Sentry, Datadog, Groundcover, Storybook, React 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Senior FullStack Developer role focused on building and scaling high-performance SaaS web applications using NestJS and NextJS. The position involves leading architecture decisions, ensuring code quality, and optimizing system performance across backend and frontend. The role also drives CI/CD reliability, observability standards, and cross-functional technical alignment. 🗂️ Requirements: 5+ years fullstack development experience, Strong experience with NestJS, Node.js, NextJS, TypeScript, Strong knowledge of PostgreSQL and data modeling, Experience building and consuming REST APIs, Implementation of JWT-based authentication, Experience with CI/CD pipelines, Experience with Docker and environment management, Frontend performance optimization (SSR, lazy loading, state management), Ability to lead architecture decisions and enforce code quality 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, CI/CD, Docker, Kubernetes, ArgoCD, Kafka, RabbitMQ, AWS, Terraform, Sentry, Datadog, Groundcover, Storybook, React 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Senior Fullstack JavaScript Developer role focused on building cloud-integrated, data-driven solutions in an agile global team. The position involves designing and developing scalable software, solving identity and account management challenges, and integrating cloud and machine learning capabilities. Remote-friendly role (Warsaw-based) contributing to sustainable, business-critical products. 🗂️ Requirements: 5+ years of software development experience, Strong JavaScript knowledge including runtimes and APIs, Backend development experience with Node.js, Proficiency in TypeScript, Frontend development experience with React, Experience with AWS services (DynamoDB, Lambda, Step Functions), Experience designing technical architecture, Fluent English, Legal right to work in the EU 📃 Skills: JavaScript, TypeScript, Node.js, React, AWS, DynamoDB, Lambda, StepFunctions, REST, APIs, Git, Agile 🏢 Description: Unleash innovation at the intersection of cloud, data, and full-stack development — shape sustainable solutions for a better tomorrow! Warszawa-based opportunity with a remote work model (once every two weeks in the office). As a Senior Fullstack JavaScript Developer – Cloud & Data Solutions , you will be working for our client, a global leader in healthcare and agriculture dedicated to solving major global challenges in the spirit of environmental care. Join a forward-thinking team developing cutting-edge solutions in crop science, contributing to sustainable farming, resilient plants, and thriving communities. Your expertise will drive the development of cloud-integrated software, data analysis tools, and innovative machine learning integrations that foster a sustainable future. Your main responsibilities: Develop and support business-critical software solutions within an agile, global, product-oriented team Solve organization-wide challenges related to identity and account management Design and document technical architecture and software solutions across multiple teams Ensure the technical feasibility, quality, and high performance of all delivered solutions Evaluate and recommend new technologies to enhance efficiency and scalability Build and maintain relationships with key stakeholders and partner organizations Mentor junior engineers, fostering technical growth and innovation Continuously develop your technical skills and career in a fast-paced environment You're ideal for this role if you have: 5+ years of experience in software development or engineering Strong problem-solving skills, proactive attitude, and collaborative mindset Deep knowledge of JavaScript, including runtimes, APIs, and ecosystem Extensive experience with Backend development using Node.js Proficiency in TypeScript, with a track record of writing clean, maintainable code Strong front-end skills with React, build tools, and performance optimization Cloud expertise – working with AWS (DynamoDB, Lambda, Step Functions) Product-oriented mindset – understanding business domains and proposing pragmatic solutions Excellent command of English and experience working in agile, product-driven organizations Ability to collaborate effectively with a global team across time zones Willingness to learn, innovate, and grow in a dynamic environment It is a strong plus if you have: Knowledge of Medusa.js Experience with SAP and Salesforce integration Language required for the role: Fluent in English with excellent communication skills Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV in English or Polish, along with a statement confirming your consent to the processing and storage of your personal data.

🏢 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: Senior JavaScript React Developer role focused on building and maintaining high-performance frontend solutions for large-scale, multi-country eCommerce platforms. The position involves developing modern applications with React.js and Next.js, contributing to a multisite Drupal transition, and driving best practices across the full development lifecycle. The role requires close collaboration with cross-functional and international teams in a hybrid work setup. 🗂️ Requirements: Strong experience with React.js and Next.js (SSG/SSR, i18n, performance optimization), Proficiency in JavaScript and TypeScript, Strong knowledge of HTML5, CSS/SCSS, Tailwind, Experience with REST and GraphQL APIs, Experience with Git and CI/CD pipelines, Knowledge of Docker and Kubernetes, Experience with cloud platforms (AWS or Azure or GCP), Understanding of headless or decoupled architecture, Experience with performance optimization and scalable frontend architecture, Knowledge of WCAG accessibility standards, Experience working in Agile/Scrum environment, English level B2 or higher 📃 Skills: React, Next.js, JavaScript, TypeScript, HTML5, SCSS, Tailwind, REST, GraphQL, Git, Jira, Figma, Confluence, Docker, Kubernetes, GitLab, AWS, Azure, GCP, Drupal, jQuery, CI/CD, WCAG, Scrum, AJAX 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. For our client, we are looking for a Senior JavaScript React Developer to join our client's Website & eCommerce team. In this role, you will be responsible for building and maintaining modern, high-performance frontend solutions using React.js and Next.js. You will collaborate closely with designers, backend developers, and international stakeholders while driving best practices across the development lifecycle. You will play a key role in the evolution of large-scale, multi-country digital platforms and contribute to the transition toward a new multisite Drupal platform planned for 2026. Project information: Location: Warsaw, Poland Work Setup: Hybrid work (2 - 3 days/ week in the office) Rate: 125 PLN/net/h + VAT (B2B contract) Language: English (B2+ Required) Start date: depending on candidate availability Project scope: Develop and maintain frontend components using React.js and Next.js (SSG/SSR, i18n, performance optimization) Build and support custom CMS modules, plugins, and integrations Contribute to all phases of the software development lifecycle: design, development, testing, deployment, and maintenance Drive and promote best practices, including test-driven development, CI/CD, SCRUM, refactoring, and code standards Collaborate closely with UX/UI designers and frontend/backend developers to deliver intuitive and visually appealing user experiences Ensure website content is easily editable by non-technical users Optimize applications for performance, scalability, and accessibility (WCAG) Work with distributed international teams and key stakeholders Stay up to date with emerging frontend technologies and industry trends Requirements: Technical Skills: Frontend: Strong skills in React.js and Next.js (SSG/SSR, i18n, performance optimization). Languages: JavaScript/TypeScript, HTML5, SCSS/Tailwind. APIs: REST, GraphQL. Tooling: Jira, Git, Figma, Confluence. Architecture (Preferred): Headless, Decoupled, Micro Frontends, Component-based design. Cloud & DevOps: Docker, Kubernetes, GitLab CI/CD, AWS/Azure/GCP. Competences: Strong front-end skills: HTML, CSS, JavaScript, jQuery, plus modern frameworks (React, Next.js). Understanding of the entire web development process (design, development, deployment). Good understanding of asynchronous request handling, partial page updates, and AJAX. Proficient in cross-browser compatibility and scalable application design principles. Experience with data migration, transformation, and scripting. Familiarity with Agile and Scrum methodologies. Prior experience with digital accessibility (WCAG) We offer: Full-time job agreement based on B2B Private medical care with dental care (covering 70% of costs) + rehabilitation package. Family package option possible Multisport card (also for an accompanying person) Life insurance

🏢 Summary: Senior Fullstack Developer role focused on designing and building secure, scalable microservices and modern SPA applications in an international environment. The position is hands-on, backend-oriented with active frontend development, emphasizing high code quality, event-driven architecture, and strong security standards. The role includes architecture contribution, CI/CD implementation, and maintaining large-scale systems. 🗂️ Requirements: Strong fullstack development experience (backend and frontend), Senior-level hands-on coding experience, Expertise in Java 17–21, Experience with Spring Boot 3.x microservices, Experience with Kafka and event-driven architecture, Strong SQL knowledge (Oracle), Experience with Redis, Experience with Angular SPA development, Strong TypeScript knowledge, Knowledge of Node.js, Understanding of DDD, Knowledge of web security principles, Experience with OIDC and OAuth2, Experience with CI/CD pipelines, Experience with large-scale applications, Fluent English, Availability to work from Warsaw office 2x/week 📃 Skills: Java, SpringBoot, Kafka, SQL, Oracle, Redis, DDD, Node.js, TypeScript, Angular, Webpack, OIDC, OAuth2, OWASP, Git, GitLab, Jenkins, Maven, Docker, Kubernetes, IntelliJ, VSCode, Jira, Confluence, Python, CICD 🏢 Description: Mission & Responsibilities As a Senior Fullstack Developer, you will design, build, and maintain modern, secure, and scalable applications that support critical business processes. You will work hands-on across both backend and frontend, contributing directly to software development rather than people management. Your mission is to ensure service continuity, high code quality, and alignment with business and security standards, while actively collaborating with international stakeholders in an English-speaking environment. Key Responsibilities Design, develop, and maintain fullstack applications (backend-focused with modern frontend) Build secure, scalable, maintainable, and testable software Develop Java-based microservices using Spring Boot Contribute to Single Page Applications (SPA) development Collaborate with business and technical stakeholders on requirements Participate in architecture design and technical decisions Integrate systems using event-driven architectures (Kafka) Optimize and maintain existing codebases Implement automated testing and CI/CD pipelines Ensure application security (authentication, identity management) Maintain technical documentation Share best practices within developer communities Continuously improve skills and stay up to date with modern technologies Requirements Backend & Architecture Java 17–21 (modern Java, no legacy) Spring Boot 3.x (microservices) Kafka (event-driven systems) SQL (Oracle) Redis (experience or strong understanding) Domain Driven Design (DDD) Frontend Node.js TypeScript Angular (SPA development) Strong knowledge of Angular best practices Webpack (nice to have) Security Strong web security knowledge OIDC & OAuth2 Identity management platforms (nice to have) OWASP awareness (certifications are a plus) DevOps & Tools Git CI/CD: GitLab CI (Jenkins nice to have) Maven (nice to have) Docker & Kubernetes (nice to have) IntelliJ, VS Code Jira & Confluence Additional Python (nice to have) AI-based coding tools (nice to have) Ways of Working Agile (Scrum, Kanban) DevOps mindset Distributed, international collaboration Soft Skills Strong teamwork and collaboration Analytical and problem-solving mindset Independent work on complex topics Adaptability and results-driven attitude Continuous learning mindset Candidate Profile (Must-have) Strong fullstack experience (backend-only profiles will not be considered) Senior-level hands-on developer (not a manager or lead) Experience with large-scale applications Excellent English communication skills Willingness to work from the office in Warsaw 2x/week If you're a hands-on engineer who enjoys building high-quality systems and working in an international environment — we’d love to hear from you.

🏢 Summary: Long-term opportunity for a Strong Middle/Senior Full Stack Developer (Node.js + React.js) to design, develop, and optimize a live educational platform. The role involves full-stack feature development, system design participation, third-party integrations, and performance, scalability, and security improvements. You will work on a mature product with continuous enhancements using modern cloud and DevOps practices. 🗂️ Requirements: 4+ years professional software development experience, 4+ years frontend experience with JavaScript, Strong knowledge of React.js, Strong knowledge of Node.js, Strong knowledge of NestJS, Experience with PHP, Experience with AWS, Experience with Docker, Experience with MySQL, Proficient with Git 📃 Skills: JavaScript, React, Node.js, NestJS, PHP, AWS, Docker, MySQL, Git, CI/CD, Salesforce, Contentful, Kubernetes, GraphQL, Jenkins 🏢 Description: Client Our client is a US‑based nonprofit organization developing an educational platform that supports students in learning computer science and building coding projects. The platform provides curriculum materials, teaching tools, progress tracking, collaboration features, and portfolio‑building capabilities. The mission of the platform is to help close the gender gap in the tech industry. Project overview The project is live and has been actively developed for over 5 years, with continuous feature enhancements and security improvements. All development is carried out on our side. Position overview We are looking for a Strong Middle/Senior Full Stack Developer (Node.js + React.js) to join our dynamic team. You will be involved in the design, development, and optimization of both frontend and backend functionality, working closely with a cross‑functional team on a long‑term product. Responsibilities Develop and maintain platform features using Node.js, React.js, and NestJS Participate in system design, architecture discussions, and technical decision‑making Improve platform performance, scalability, and security Implement integrations with third‑party systems (e.g., Salesforce, Contentful) Work closely with product managers, designers, and QA to deliver high‑quality features Write clean, maintainable, and well‑tested code Participate in code reviews and provide constructive feedback to the team Contribute to DevOps processes using AWS, Docker, and CI/CD tools Troubleshoot, debug, and resolve technical issues in both frontend and backend components Support continuous enhancement and modernization of the long‑running project Requirements 4+ years of professional software development experience 4+ years of hands‑on experience with JavaScript for frontend development Strong knowledge of: React.js, Node.js, NestJS Experience with PHP Experience working with AWS and Docker Experience with MySQL Confident use of Git Nice to have Solid understanding of Kubernetes Experience with GraphQL Familiarity with Jenkins and CI/CD automation Experience integrating with Salesforce and Contentful

🏢 Summary: Senior Fullstack Software Engineer & Tech Lead role focused on designing and delivering scalable, cloud-native applications on AWS using modern full-stack technologies. The position combines hands-on development with technical leadership, architecture design, and infrastructure automation. The engineer will drive end-to-end solutions, from UI and APIs to CI/CD and Infrastructure-as-Code. 🗂️ Requirements: 8+ years of software engineering experience, Strong experience in full-stack development, Expertise in TypeScript, Experience with React, Hands-on experience with AWS, Experience with serverless services (Lambda, Batch), Knowledge of Infrastructure-as-Code (Terraform or CloudFormation), Experience with RESTful API development, Experience with relational databases, Experience with NoSQL databases, Experience with CI/CD pipelines, Ability to lead technical design and mentor engineers 📃 Skills: TypeScript, React, AWS, Lambda, Batch, Terraform, CloudFormation, REST, SQL, SQLServer, DB2, Sybase, MongoDB, Elasticsearch, CI/CD 🏢 Description: Senior React Developer with AWS Join a global leader in financial technology as a Senior React Developer with AWS, shaping the future of innovative, cloud-native web applications. In this high-impact role, you'll spearhead the design and development of cutting-edge solutions at a major international institution, collaborating with cross-functional teams across Warsaw, London, New York, and India. Be part of a forward-thinking environment driving a transformative cloud migration strategy, leveraging AI and modern development practices to deliver scalable, high-performance platforms. What You'll Do: Architect and engineer modern web applications using React, TypeScript, and AWS Lead technical decision-making and provide architectural guidance to the development team Develop and maintain serverless solutions with AWS Lambda, Batch, and CloudWatch Write Infrastructure-as-Code with Terraform to streamline deployment and infrastructure management Collaborate closely with designers, product managers, and stakeholders to translate requirements into robust solutions Support migration of legacy systems to cloud-native, React-based architectures Optimize CI/CD pipelines for automated, efficient deployment Work with cloud storage solutions such as S3, MongoDB, and ElasticSearch Required Skills: 8+ years of practical software engineering experience Strong expertise in React and TypeScript Hands-on experience with AWS services, especially Lambda, Batch, and CloudWatch Experience with Terraform or similar Infrastructure-as-Code tools Solid understanding of relational and non-relational databases (MongoDB, ElasticSearch, S3) Knowledge of RESTful API design and development Excellent communication skills, capable of engaging with non-technical stakeholders Bachelor’s degree in Computer Science, Engineering, Mathematics, or related field Nice to Have Skills: Experience with CI/CD pipelines Familiarity with serverless architecture best practices Knowledge of AI development tooling in cloud environments Preferred Education and Experience: Bachelor’s or higher degree in a technical discipline 8+ years of professional experience in software engineering, with a focus on full-stack and cloud-native solutions Other Requirements: Ability to work in an on-site environment in the centre of Warsaw Willingness to contribute to a dynamic, global team driven by innovation and excellence Bring your expertise to a role that truly makes an impact - apply now and help shape the future of financial technology!