Senior Backend-Focused Fullstack Engineer (Java, React)

🏢 Summary: Senior backend‑heavy fullstack engineer to build a greenfield prenatal screening diagnostics product, owning features end‑to‑end across backend and frontend. The role focuses on Java/Spring Boot architecture, data modeling, APIs, and AWS infrastructure, with React/TypeScript contributions as needed. AI coding tools are expected as a core part of daily development in a regulated, production environment. 🗂️ Requirements: Strong Java and Spring Boot expertise, Experience designing APIs and domain models, Solid understanding of OOP and SOLID principles, Ability to define service boundaries and system architecture, Working proficiency in React and TypeScript, Proven experience using AI coding tools in daily development, Experience writing unit, integration, and API tests, Experience with PostgreSQL schema design and query optimization, Experience deploying and operating workloads on AWS, Ability to work in greenfield, ambiguous environments 📃 Skills: Java, Spring, SpringBoot, React, TypeScript, PostgreSQL, AWS, ECS, EKS, RDS, Lambda, S3, OOP, SOLID, REST, AI, Claude, Cursor, Testing 🏢 Description: Our client — a global leader in healthcare and diagnostics — is building a new prenatal screening diagnostics product from the ground up. We are looking for a senior backend‑heavy fullstack engineer who can own features end‑to‑end — from data modeling and APIs to the UI. The role offers real ownership within a highly regulated, impact‑driven product environment. Using AI tooling as a core part of daily engineering work is expected — not as an experiment, but as a standard way of building and delivering software. What You'll do: Own features end-to-end: design, implement, test, deploy, and maintain across the full stack. Work split ~80% backend, 20% frontend. Make foundational architectural decisions on a greenfield codebase — data models, API contracts, service boundaries, test strategy Build and maintain the Java/Spring Boot backend that powers the product's core logic Contribute to the React/TypeScript frontend when needed — you're backend-primary, but you ship UI when the team needs it Integrate AI coding tools into your daily workflow to accelerate delivery while maintaining code quality — and help the team adopt these practices Collaborate directly with product stakeholders to refine requirements in a fast-moving, low-ceremony environment Requirements: Strong Java and Spring Boot expertise — clean API design, domain modeling, sound architectural trade-offs. You think in terms of service boundaries, data flow, and maintainability, not just making it work Solid grasp of software design principles — object-oriented programming, SOLID, clean architecture, separation of concerns. You write code that the next person can read, extend, and trust. You know when a pattern helps and when it's ceremony Working proficiency in React and TypeScript — you can pick up frontend tasks, build components, and integrate with backend APIs independently Proven experience integrating AI coding tools (Claude Code, Cursor, or equivalent) into daily development workflow — including prompt design for code generation, output validation, and actively preventing AI-generated technical debt. You can describe concrete examples of where AI accelerated your delivery and where you chose to override it Testing as a professional discipline, not a checkbox — you write unit, integration, and API tests as part of delivery, own the test pyramid decisions, and treat untested code as unfinished code PostgreSQL — schema design, query optimization, migrations in a production context AWS experience — you've deployed and operated production workloads on AWS (ECS/EKS, RDS, Lambda, S3) and can make informed infrastructure decisions Comfort working in ambiguous, greenfield settings — you define scope with stakeholders rather than waiting for pre-scoped tickets Nice-to-Have: Infrastructure as Code (Terraform) Healthcare, diagnostics, or regulated-environment experience Security hardening practice — threat modeling, dependency scanning, secure defaults Observability tooling (CloudWatch, Prometheus, Grafana) CI/CD pipeline design (GitHub Actions or similar) Our offer: Permanent full-time contract (B2B contract) Ability to work entirely remotely or in one of our cool offices around Poland International project environment - challenging and rewarding projects Access to private medical service, life insurance, and multisport card Access to training and certificate courses (including free access to Udemy training platform) Cafeteria Benefits System - vouchers for purchases and sevices Awesome company events and parties

🏢 Summary: Remote Java Developer role for a greenfield prenatal screening diagnostics platform, focused primarily on backend development with Spring Boot and partial frontend work in React. The position involves end-to-end feature ownership, architectural decision-making, AWS deployment, and integration of AI coding tools into the development workflow. Ideal for engineers experienced in building scalable backend systems in ambiguous, product-driven environments. 🗂️ Requirements: Strong Java expertise, Strong Spring Boot expertise, Experience with REST API design, Experience with domain modeling and clean architecture, Proficiency in object-oriented programming and SOLID principles, Working proficiency in React, Working proficiency in TypeScript, Experience integrating AI coding tools into development workflow, Experience writing unit, integration, and API tests, Experience with PostgreSQL schema design and query optimization, Experience deploying and operating workloads on AWS (ECS/EKS, RDS, Lambda, S3), Ability to make architectural decisions in greenfield projects 📃 Skills: Java, Spring, SpringBoot, React, TypeScript, PostgreSQL, AWS, ECS, EKS, RDS, Lambda, S3, REST, OOP, SOLID, Terraform, CloudWatch, Prometheus, Grafana, GitHubActions, CI/CD 🏢 Description: We are looking for a Java Developer with React experience to join a project delivered for a pharmaceutical company working on a greenfield prenatal screening diagnostics platform . This role offers a unique opportunity to work on a modern, backend-driven solution with real impact, combining strong backend ownership with selected frontend contributions. Work Mode: remote 100% Job responsibilities Own features end-to-end: design, implement, test, deploy, and maintain across the full stack.  Work split ~80% backend, 20% frontend Make foundational architectural decisions on a greenfield codebase - data models, API contracts, service boundaries, test strategy Build and maintain the Java/Spring Boot backend that powers the product's core logic Contribute to the React/TypeScript frontend when needed - you're backend-primary, but you ship UI when the team needs it Integrate AI coding tools into your daily workflow to accelerate delivery while maintaining code quality - and help the team adopt these practices Collaborate directly with product stakeholders to refine requirements in a fast-moving, low-ceremony environment Expectations Strong Java and Spring Boot expertise - clean API design, domain modeling, sound architectural trade-offs. You think in terms of service boundaries, data flow, and maintainability, not just making it work Solid grasp of software design principles - object-oriented programming, SOLID, clean architecture, separation of concerns. You write code that the next person can read, extend, and trust. You know when a pattern helps and when it's ceremony Working proficiency in React and TypeScript - you can pick up frontend tasks, build components, and integrate with backend APIs independently Proven experience integrating AI coding tools (Claude Code, Cursor, or equivalent) into daily development workflow - including prompt design for code generation, output validation, and actively preventing AI-generated technical debt. You can describe concrete examples of where AI accelerated your delivery and where you chose to override it Testing as a professional discipline, not a checkbox - you write unit, integration, and API tests as part of delivery, own the test pyramid decisions, and treat untested code as unfinished code PostgreSQL - schema design, query optimization, migrations in a production context AWS experience - you've deployed and operated production workloads on AWS (ECS/EKS, RDS, Lambda, S3) and can make informed infrastructure decisions Comfort working in ambiguous, greenfield settings - you define scope with stakeholders rather than waiting for pre-scoped tickets Nice-to-Have: Infrastructure as Code (Terraform).Healthcare, diagnostics, or regulated-environment experience, Security hardening practice - threat modeling, dependency scanning, secure defaults, Observability tooling (CloudWatch, Prometheus, Grafana), CI/CD pipeline design (GitHub Actions or similar) We offer Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development Consultant Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics Spectacular events, both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics), Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients. Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package , including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad. About 7N Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.

🏢 Summary: Senior Full Stack Developer role focused on owning and scaling a customer-facing dashboard and its underlying systems. The position covers end-to-end development across React frontend and Node.js backend, with responsibility for architecture, APIs, databases, and security. It also emphasizes AI-assisted development and driving high-quality, rapid code delivery. 🗂️ Requirements: Senior-level full stack development experience, Strong React frontend development experience, Strong Node.js backend development experience, Experience building RESTful APIs, Experience building GraphQL APIs, Experience with SQL databases, Experience with NoSQL databases, Experience with authentication and authorization implementation, Experience designing secure applications, Experience with AI-assisted development tools 📃 Skills: React, Node.js, REST, GraphQL, SQL, NoSQL, APIs, Authentication, Authorization, Security, Claude, Codex 🏢 Description: We are seeking a Senior Full Stack Developer who thrives in fast-paced environments and takes full ownership of product experiences. This role is central to building and scaling our customer-facing dashboard and the systems behind it, while driving a culture of rapid, high-quality code delivery powered by modern AI tools. Own end-to-end development of the customer-facing dashboard, including both frontend (React) and backend services Design, build, and maintain scalable full-stack applications using modern best practices Lead frontend development with React, delivering production-ready, high-performance interfaces Architect and implement backend systems using Node.js Develop and maintain APIs using both RESTful and GraphQL approaches Design and manage data models across SQL and NoSQL databases Take full responsibility for application security, including best practices in authentication, authorization, and data protection Build and evolve AI-assisted development workflows (e.g., Claude, Codex) to enable faster, more efficient code shipping Drive and instill a culture of rapid, high-quality delivery across the team, including mentoring current and new hires Collaborate with cross-functional teams to define, design, and ship new features

🏢 Summary: Senior Full Stack Engineer role focused on designing and delivering scalable, cloud-native applications across backend, frontend, and cloud infrastructure. The position involves building high-performance Java systems, modern React interfaces, and deploying solutions on Azure in a distributed enterprise environment. The engineer contributes to architecture decisions and ensures reliable CI/CD and production operations. 🗂️ Requirements: 7+ years Java experience, Strong enterprise backend development, Experience with ReactJS, Experience with Azure cloud platform, Strong PostgreSQL knowledge, Relational data modeling skills, 2+ years CI/CD experience, Experience with DevOps practices, Ability to work across full stack, Strong debugging skills in distributed systems 📃 Skills: Java, ReactJS, Azure, PostgreSQL, CI/CD, DevOps, Microservices, SQL, Cloud, Git 🏢 Description: Senior Full Stack Engineer (Java, Cloud & React) We are looking for a Senior Full Stack Engineer who can take ownership of designing and delivering scalable, cloud-native applications. The role involves working across backend services, frontend interfaces, and cloud infrastructure in a highly distributed enterprise environment. What you will do Design and build high-performance backend systems using Java 17+ Develop modern, responsive UI applications using ReactJS Build and deploy cloud-native applications on Microsoft Azure Work with PostgreSQL for scalable and efficient data design Collaborate with DevOps teams to ensure smooth CI/CD pipelines and releases Debug and resolve complex production issues across distributed systems Contribute to architecture discussions and technical decision-making What we are looking for Strong hands-on expertise in Java (7+ years) and enterprise backend development Solid experience in ReactJS-based frontend development Experience working with cloud platforms (Azure preferred) Strong understanding of PostgreSQL and relational data modeling Exposure to DevOps practices and CI/CD pipelines (2+ years) Ability to work across the stack and handle production-grade systems Strong problem-solving and debugging skills Nice to have Experience designing microservices-based architectures Exposure to large-scale distributed systems Experience working in enterprise-grade cloud environments Interested? Share your CV to a company who matters about your growth and long term prospects.

🏢 Summary: The role involves designing, developing, and maintaining cloud-native enterprise applications as a Fullstack Engineer using Java and Angular. The position focuses on building scalable backend and frontend solutions within a microservices architecture, supporting CI/CD, containerization, and secure application design. The engineer will work in Agile teams and contribute to architecture, deployment, and system reliability. 🗂️ Requirements: 5+ years of backend development experience, Strong expertise in Java 17+, Experience with Spring Boot and Spring Security, Strong knowledge of Angular and TypeScript, Experience with PostgreSQL and Hibernate/JPA, Experience with microservices architecture, Hands-on experience with Maven, Git, GitHub, CI/CD, Knowledge of Kubernetes and Docker, Experience with SQL databases, Experience with REST API development, Experience with JUnit, AssertJ, Hamcrest, Bash/Shell scripting skills, Understanding of secure coding practices, Experience in Agile/Scrum environments, English level B2/C1 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, Angular, TypeScript, PostgreSQL, Hibernate, JPA, Maven, Git, GitHub, CI/CD, Kubernetes, Docker, SQL, REST, JUnit, AssertJ, Hamcrest, Bash, Liquibase, Helm, Kafka, Python, Go, C, Grafana, Prometheus, Kibana, OWASP, JIRA 🏢 Description: We are looking for an experienced Fullstack Engineer who will be responsible for designing, developing, and maintaining modern enterprise applications in a cloud-native architecture. The person in this role will work on both backend and frontend solutions (Java + Angular). Our expectations 5+ years of professional backend development experience Strong expertise in Java 17+ and Spring ecosystem (Spring Boot, Spring Security) Strong knowledge of Angular and frontend development with TypeScript Experience with PostgreSQL, Hibernate/JPA Experience with cloud-native and microservices architecture Hands-on experience with Maven, Git, GitHub, and CI/CD pipelines Knowledge of Kubernetes, Docker Experience with SQL databases and REST API development Familiarity with JUnit, AssertJ, and Hamcrest Bash/Shell scripting skills Strong understanding of secure coding practices and scalable application design Experience working in Agile/Scrum environments Good English communication skills (B2/C1) Welcome Skills Experience with Kafka and event-driven architecture Knowledge of Python scripting Familiarity with Go (Golang) or C Experience with monitoring and logging tools such as Grafana, Prometheus, and Kibana Knowledge of OWASP Top 10 and application security best practices Experience with JIRA or similar project management tools Previous experience in enterprise-scale distributed systems Key tasks Develop and maintain scalable backend applications using Java 17+ and Spring Boot Design and optimize PostgreSQL databases and manage schema migrations with Liquibase Build and maintain modern frontend applications using Angular Develop secure, high-performance, and cloud-native solutions Contribute to CI/CD pipelines and deployment automation Support containerized deployments using Docker, Kubernetes, and Helm Collaborate with distributed engineering teams in Agile environments Participate in architecture discussions, code reviews, and technical mentoring Ensure application reliability, scalability, and maintainability across backend and frontend layers

🏢 Summary: Full-Stack / Backend Developer role focused on building and maintaining scalable applications and REST APIs that support client products. The position involves developing new integrations, enhancing existing backend and frontend systems, and improving platform performance and reliability. You will contribute to architecture improvements and work within a cloud-based environment. 🗂️ Requirements: Minimum 3 years commercial experience, Experience with Java, Experience with Spring Boot, Experience with AWS, Experience with MongoDB, Experience with PostgreSQL, Experience with React.js, Experience designing REST APIs, Knowledge of backend architecture, Experience with cloud environments, Understanding of clean code principles, Experience working in Agile environment 📃 Skills: Java, SpringBoot, AWS, MongoDB, PostgreSQL, React, REST, Agile, Cloud, Architecture 🏢 Description: We are looking for an experienced Full-Stack / Backend Developer to join our team and help build scalable applications and APIs supporting our clients’ products. You will work on both backend and frontend solutions, contributing to product development, system improvements, and ongoing platform stability. Your Responsibilities Develop new APIs to support client integrations and business features. Maintain and enhance existing backend and frontend applications. Fix bugs and improve application performance and reliability. Upgrade and support operational aspects of the platform. Identify opportunities to improve product quality, architecture, and development processes. Collaborate with developers, product teams, and stakeholders to deliver high-quality solutions. Participate in code reviews and contribute to best engineering practices. Required Skills Minimum 3 years of commercial experience with: Java Spring Boot AWS MongoDB PostgreSQL React.js Experience designing and developing REST APIs. Knowledge of backend architecture and modern web applications. Experience working with cloud-based environments (AWS). Understanding of software development best practices and clean code principles. Ability to work in an Agile development environment.

🏢 Summary: Mid-level Full Stack Engineer role focused on building and shipping end-to-end features in a TypeScript monorepo using Next.js and Node.js, while leveraging AI tools for daily development. The position involves developing backend services, integrating AI agent workflows, and deploying cloud-based infrastructure. It combines product-focused engineering with hands-on AI-enabled platform development. 🗂️ Requirements: 2–4 years commercial software engineering experience, Strong TypeScript and JavaScript knowledge, Hands-on experience with React and Next.js, Backend development experience with Node.js, Experience with PostgreSQL and ORM usage, Experience building and consuming REST APIs, Understanding of cloud infrastructure concepts, Experience with Git and CI/CD pipelines, Experience with code quality tools, Experience working in a monorepo, Regular use of AI-assisted development tools 📃 Skills: TypeScript, JavaScript, React, Next.js, Node.js, Express, Hono, Prisma, PostgreSQL, pgvector, MongoDB, Mongoose, REST, Git, CI/CD, ESLint, Prettier, Turborepo, Mastra, Vercel, GCP, Terraform, Datadog, OpenTelemetry, Docker 🏢 Description: Overview We're looking for a Mid Full Stack Engineer who builds end-to-end features across our Next.js frontend and Node.js backend — and uses AI tools daily to ship faster. You'll work in a modern TypeScript monorepo powering an AI-enabled platform, contributing to both the product and the AI agent infrastructure behind it. This isn't an ML research role — it's a hands-on engineering role where AI is part of your daily workflow and the product you're building. Key Responsibilities Build and ship full-stack features end-to-end in a TypeScript/Next.js/React monorepo Develop and maintain backend services using Node.js, Hono, and Express Work with Prisma ORM and PostgreSQL (with pgvector) and MongoDB via Mongoose Contribute to AI agent workflows built on Mastra and the Vercel AI SDK Use AI coding tools (Cursor, Claude, Copilot) daily to accelerate development Deploy and maintain services on GCP Cloud Run with Terraform Improve observability using Datadog APM/RUM and OpenTelemetry Collaborate with product, design, and engineering in an agile environment Write clean, testable code and participate in code reviews Required Qualifications Engineering (2–4 years commercial experience): Strong TypeScript and JavaScript fundamentals Hands-on experience with React and Next.js (App Router) Backend experience with Node.js (Express, Hono, or similar) Working knowledge of relational databases (PostgreSQL) and an ORM (Prisma preferred) Familiarity with REST APIs and basic cloud infrastructure concepts Understanding of Git workflows, CI/CD pipelines, and code quality tools (ESLint, Prettier) Comfortable working in a monorepo (Turborepo experience is a plus) AI Mindset & Tooling: Regularly uses AI-assisted development tools (Cursor, Claude, GitHub Copilot) Curious about LLM integrations and AI SDK patterns — willing to learn Mastra and Vercel AI SDK Uses AI for real productivity gains, not just experimentation Product & Collaboration: Understands the "why" behind features, not just the "how" Comfortable working closely with product and design stakeholders Good English communication skills (written and spoken) Nice-to-Have Experience with Mastra or similar AI agent frameworks Familiarity with GCP (Cloud Run, Cloud SQL, Artifact Registry) Terraform or other IaC experience MongoDB/Mongoose experience Tailwind CSS and Radix UI / shadcn component libraries Experience with Clerk authentication Exposure to observability stacks (Datadog, Langfuse, OpenTelemetry) Familiarity with Docker and containerized deployments

🏢 Summary: Senior Engineer role focused on independently delivering MVP features and Proofs of Concept end-to-end on an existing large-scale SaaS and data connector platform, with strong emphasis on practical use of LLMs and AI tools in daily development. The position involves backend-oriented full-stack development, rapid prototyping, and integration with cloud and CI/CD environments in a remote setup. 🗂️ Requirements: 4+ years of experience with Python, Full-stack development experience with strong backend focus, Knowledge of TypeScript, Knowledge of React, Hands-on experience using LLMs/AI tools in development workflows, Experience integrating with cloud services, Experience working with CI/CD pipelines, Professional level of English 📃 Skills: Python, TypeScript, React, LLM, AI, SaaS, CI/CD, Cloud 🏢 Description: Does building awesome, innovative products that add up to something meaningful sound like a dream come true? Come join us and make that vision a reality! About We are looking for a Senior Engineer who will independently deliver new MVP features and Proofs of Concept end-to-end. You will build on top of an existing large-scale SaaS and data connector platform, extending it with new ideas rather than starting in a pure greenfield. A key part of this role is the practical use of LLMs and AI tools in everyday development — to accelerate prototyping, coding, research and validation. Responsibilities Independently design and build MVP features and PoCs end-to-end Validate technical feasibility and provide pragmatic architecture decisions Use LLMs and AI tools to accelerate prototyping and exploration Implement clean, maintainable code Integrate with cloud services and CI/CD pipelines for fast delivery Collaborate with product/design to shape and refine early concepts Our offer Competitive salary on B2B contract Fully remote position Real impact and independence at work Individual career path Work-life balance A non-corporate atmosphere where innovation, personal growth, and teamwork thrive 100+ smart, curious & ambitious engineers What you bring 4+ years of experience with Python Full-stack skillset with strong backend orientation Knowledge of front-end technologies like TypeScript and React Demonstrated, hands-on use of LLMs/AI in real development workflows(e.g. code generation, refactoring, prototyping) Product mindset, speed, and autonomy in early-stage development Strong communication and teamwork skills — you’re proactive, listen with intention, and use clear writing to bring ideas to the table and keep everyone aligned. Professional level of English Benefits International Projects Small Teams Flat Structure Friendly Atmosphere Flexible Hours Individual Career Path We want your TALENT! Don’t hesitate and APPLY! We are happy to tell you more details about this position in a phone call. Our recruitment process is very fast and straightforward to ensure a great experience from the first interview to joining your dream team!

🏢 Summary: Senior Software Engineer role focused on test automation and quality engineering for a greenfield clinical diagnostics platform in the healthcare industry. The position involves building scalable automation frameworks, CI/CD pipelines, and quality tooling to support compliant and reliable software delivery. The role also includes defining engineering standards, leveraging AI-assisted development tools, and supporting regulated software processes. 🗂️ Requirements: 8+ years of software engineering experience, Strong test automation and quality engineering expertise, Object-oriented design knowledge, Understanding of SOLID and DRY principles, Experience with concurrency, data structures, and algorithms, Hands-on development experience in Java or TypeScript, Experience building automation frameworks from scratch, Knowledge of API and integration testing, CI/CD pipeline design and maintenance experience, Experience with GitHub Actions or GitLab CI, Experience with AI-assisted development tools, Experience with Docker and containerized environments, Ability to define technical standards, Professional English proficiency 📃 Skills: Java, TypeScript, Docker, Testcontainers, GitHub, GitLab, CI/CD, API, AWS, REST, AI 🏢 Description: About the project You'll join a greenfield project in the medical diagnostics / healthcare industry, focused on building a regulated clinical diagnostic platform supporting first-trimester prenatal screening for trisomy and preeclampsia risk assessment. As a Senior Software Engineer specializing in Test Automation and Quality Engineering, you will help establish the engineering foundations of the platform by developing scalable automation frameworks, quality tooling, and CI/CD solutions that enable fast, reliable, and compliant software delivery. This is a hands-on engineering role with a strong focus on software development, technical leadership, and building solutions that promote quality by design. Responsibilities - Design and develop scalable test automation frameworks and quality engineering tooling. - Build and implement a risk-based testing strategy across unit, integration, API, and critical end-to-end test layers. - Design and optimize CI/CD pipelines to provide fast and reliable feedback through parallel execution, sharding, artifact management, and flaky test detection. - Define and promote engineering standards, testing patterns, and best practices across development teams. - Leverage AI-powered development tools to accelerate test generation, coverage analysis, failure investigation, and test maintenance while maintaining engineering quality and ownership. - Build reproducible containerized test environments using Docker and Testcontainers. - Develop shared quality engineering solutions and internal tooling that can be adopted across multiple product teams. - Support software traceability, auditability, and compliance processes required in a regulated environment. Requirements - 8+ years of professional software engineering experience with a strong focus on test automation and quality engineering. - Strong software engineering fundamentals, including object-oriented design, design patterns, SOLID principles, DRY, concurrency, data structures, and algorithms. - Hands-on experience developing production-grade applications in Java, TypeScript, or another object-oriented programming language. - Proven experience designing and building scalable automation frameworks and internal engineering tools from scratch. - Strong knowledge of test automation architecture, test pyramid principles, API testing, integration testing, and test isolation techniques. - Extensive experience designing and maintaining CI/CD pipelines using GitHub Actions, GitLab CI, or similar platforms. - Experience using AI-assisted software development tools and integrating AI into engineering workflows while ensuring code quality. - Experience building containerized test environments and development infrastructure. - Ability to define technical standards and influence engineering practices across multiple teams. - Professional English proficiency. Nice to have - Experience developing software in regulated industries such as medical devices, healthcare, or pharmaceuticals. - Experience with cloud platforms, especially AWS. - Knowledge of Testcontainers for integration testing. - Experience with contract testing and REST API validation. - Contributions to open-source projects related to testing frameworks or AI developer tooling.

🏢 Summary: Senior Fullstack Software Engineer role focused on building scalable, cloud-native applications with a strong backend emphasis (70% backend, 30% frontend). The position involves designing distributed, event-driven systems on AWS, developing REST APIs, and contributing across the full stack using Node.js, TypeScript, React, and Next.js. The engineer will drive architectural decisions, scalability, and technical direction while collaborating with cross-functional teams in a US-aligned remote environment. 🗂️ Requirements: Strong experience as Senior Software Engineer in product-focused environments, Advanced backend development with Node.js and TypeScript, Experience building and consuming REST APIs, Frontend development experience with React and TypeScript, Experience with AWS or other cloud platforms, Strong knowledge of distributed and scalable system design, Experience with MySQL and PostgreSQL databases, Experience with event-driven architectures, Experience with queuing or messaging systems, Ability to write clean, maintainable, scalable code, Strong debugging and problem-solving skills, Availability to work overlapping US hours 📃 Skills: Node.js, TypeScript, React, Next.js, AWS, REST, MySQL, PostgreSQL, SQL, APIs, Microservices, Event-driven, Messaging, Queues, Cloud, Distributed-systems 🏢 Description: Fullstack Senior Software Engineer Location: Remote We are looking for a talented Senior Fullstack Software Engineer to join a high-performing product engineering team focused on building scalable, modern cloud-native applications. This role is best suited to an experienced engineer who is stronger on the backend (approximately 70% backend / 30% frontend) and enjoys designing robust distributed systems while still being comfortable contributing across the full stack. You will play a key role in shaping technical direction, building scalable event-driven platforms, and contributing to product thinking - not just delivering code. We are looking for someone with strong ownership, accountability, and the ability to think about the wider business and customer impact of the solutions they build. This position requires alignment with US-based teams, and so the working hours must overlap. What You'll Be Doing Designing, building, and maintaining scalable backend services using Node.js and TypeScript Developing and supporting modern frontend applications using React and Next.js Building robust RESTful APIs and backend integrations Contributing to distributed, cloud-native systems running on AWS Designing and implementing event-driven architectures and queue-based systems Working with SQL databases including MySQL and PostgreSQL Driving engineering best practices, scalability, reliability, and performance improvements Collaborating closely with Product, Engineering, and stakeholders to shape technical solutions Taking ownership of features and systems throughout the full software lifecycle Mentoring engineers and contributing to technical discussions and architectural decisions Required Skills & Experience Strong experience as a Software Engineer / Senior Software Engineer in modern product-focused environments Excellent backend development experience with: Node.js TypeScript REST APIs React TypeScript Experience building applications in AWS cloud environments (or other cloud platforms) Strong understanding of scalable and distributed system design MySQL PostgreSQL Proven experience building event-driven architectures and working with queuing/messaging systems (highly important) Ability to write clean, maintainable, and scalable code Strong problem-solving and debugging skills What We're Looking For Strong product mindset - someone who thinks beyond just delivering tickets and understands the "why" behind engineering decisions Ownership and accountability for technical delivery and outcomes Ability to contribute to architectural direction and scalability initiatives Comfortable working in fast-paced, collaborative engineering environments Passion for building high-quality, scalable software products Strong communication and stakeholder collaboration skills