Senior Fullstack Developer – JavaScript, Node.js, React, AWS

🏢 Summary: Senior Fullstack Engineer role focused on building scalable cloud-native applications with a 50/50 split between React/TypeScript frontend development and Node.js microservices backend development. The position includes API and UI development, automated testing, production support, and technical mentoring in a product-driven team. It is a Poland-based hybrid/remote role requiring quarterly in-person collaboration in Poland. 🗂️ Requirements: Poland residency, MSc in Computer Science or similar, 7–10 years of JavaScript/TypeScript experience, React and modern SSR framework expertise, Node.js expertise, Strong automated testing skills, Fluent English 📃 Skills: JavaScript, TypeScript, React, Node.js, Vitest, Playwright, Storybook, AWS, Lambda, S3, CloudFront, IAM, Pulumi, Microservices, SSR, Remix, Next.js 🏢 Description: We’re seeking a Senior Fullstack Engineer with a passion for building scalable, cloud-native applications using modern JavaScript technologies. In this hands-on role, you’ll collaborate with our product development team to design and implement microservices and micro frontend architectures , ensuring high performance, usability, and maintainability. This role offers a 50/50 split between frontend and backend development , making it ideal for someone who thrives in a fast-paced, product-driven environment , takes ownership, and enjoys mentoring teammates. If you’re experienced in and excited about leveraging React, TypeScript, and Node.js to create impactful solutions, we’d love to hear from you! This Poland-based role offers remote flexibility, but we value in-person collaboration. Our team meets in Poland for at least one week each quarter, so we request all applicants to be located in Poland. This is not a globally remote role. Poland residency is required. The contract form is Umowa o Pracę (brutto). What you will be responsible for Collaborate in refinement sessions with product and tech teams to ensure feature clarity and feasibility. Design, implement, and maintain scalable web APIs using Node.js and microservices architecture principles. Develop responsive, high-quality user interfaces with React and TypeScript . Work closely with Product Owners to clarify feature requirements and ensure business context is well-understood. Align feature architecture with Tech Leads to ensure consistency and scalability. Ensure features meet the Definition of Done with robust test coverage (unit, integration, E2E). Support incident response and production issue resolution. Mentor teammates and contribute to knowledge sharing in technical best practices. What makes you a match > Essential Qualifications (Must-Have's): MSc Computer Science or similar 7 - 10 years of professional experience in JavaScript/TypeScript Expertise in React + a modern SSR framework (React Router v7 / Remix / Next.js) (frontend) and Node.js (backend) Strong testing skills ( Vitest, Playwright, and Storybook interaction tests/component-driven ). > Bonus Skills: Familiarity with AWS (Lambda, S3, CloudFront, IAM, Pulumi / infrastructure-as-code). Agile/DDD experience in cross-functional teams. > Collaboration and Interpersonal Skills Clear communication with technical/non-technical stakeholders. Ownership mindset with proactive problem-solving. Languages: Fluent English (required); German, Polish, Ukrainian (all nice-to-have). What you can expect A dynamic, ambitious team where your voice is heard, and your contributions truly matter. You’ll have real ownership over your decisions in a trusted, cross-functional environment within a Swiss product company that puts people first. We offer fair compensation, flexible working hours, a hybrid work setup, and a culture that supports both personal and professional growth, fostering a healthy work-life balance. Employer of Record: For this role, we offer employment through our trusted Employer of Record ( remote.com ), ensuring full legal compliance and a seamless experience for our team members in Poland. ID Verification: To maintain a fair and secure hiring process, candidates might be asked to verify their identity via PEScheck before speaking with our recruiters. This step helps us prevent fraud and focus our resources on genuine applicants. Who we are esurance is a Swiss InsurTech offering a SaaS platform that connects SMEs, insurance providers, brokers, and business application providers. Founded in 2013, we're on a mission to make health insurance for small businesses truly hassle-free. What makes us unique You'll be part of a connected, forward-thinking team built on trust, openness, and mutual respect — working hybrid from Zürich or remotely across Europe. We invest in your growth through agile practices, real ownership, and a transparent Grading System that ensures fair pay and clear career paths. Our core values We are connected. We are ahead. We are clear. We are approachable. Do these resonate with you? → Come join us. Our Recruitment Process & Principles We keep our process transparent and respect your time: Application Review — You hear from us within 5 business days. Always. Recruiter Screen — A relaxed Get2Know call to explore mutual fit. Interview Round — Two Role Knowledge interviews (peer + supervisor), one Culture Match, one Leadership conversation. Batched into two days wherever possible. Hiring Decision — Thoughtful, timely. You'll know within 1–2 weeks. Use of Artificial Intelligence (AI) We use AI to increase productivity and you're welcome to use it to polish your CV or Coverletter. Interviews and assessments should reflect your genuine self, though. Recruiting Agencies: We don't work with unsolicited agency submissions. Thanks for respecting this.

🏢 Summary: Senior Fullstack Developer role for building a greenfield project-management module, with React front-end development and C#/.NET microservices. The position covers end-to-end delivery, including automated testing, CI/CD deployment, and monitoring in Azure Kubernetes environments. It offers 100% remote work for candidates based in or eligible to work in Poland. 🗂️ Requirements: React experience, C# and .NET development experience, Practical microservices architecture knowledge, Docker and Kubernetes deployment experience in Azure, Azure DevOps workflow experience, Automated unit and integration testing practice, Ability to independently own and deliver complex tasks, Fluent English, Residence in Poland or eligibility to work in Poland 📃 Skills: React, C#, .NET, Microservices, Docker, Kubernetes, Azure, AzureDevOps, CI/CD, GitHub, Copilot, Testing 🏢 Description: e are part of an international organization listed on Nasdaq Stockholm, operating in 11 countries. In Poland, we work with full autonomy. We independently choose our technologies, processes, and ways of working while maintaining the highest professional standards. We deliver a wide range of IT projects in Poland and internationally, across multiple domains and technologies. This allows our consultants to develop their competencies and gain experience aligned with their professional ambitions. Our collaboration is built around the CARE philosophy. For us, it means responsible project matching, transparent cooperation, and a long-term approach to professional growth. Join us as Senior Fullstack Developer. Grow in an environment that cares about your development as much as you do. Your responsibilities Design, develop, and maintain fullstack features with a focus on front-end web application development using React coupled with C# and .NET microservices. Build automated intelligent forms, dynamic UI workflows, and CMS -connected data pipelines for a greenfield project management module. Take ownership of the end-to-end development cycle, including writing automated unit and integration tests, deployment, and monitoring. Collaborate with the team utilizing AI-assisted coding tools like GitHub Copilot to maintain code quality and accelerate delivery. Interact directly with Azure DevOps CI/CD pipelines and push code into a cloud-hosted Kubernetes cluster in Azure . Requirements Experience in React , with the ability to take ownership of complex frontend tasks. Knowledge in Tailwind CSS or UI libraries like shadcn/ui is an advantage. Experience in C# and .NET development, including practical knowledge in microservices architecture. Experience with modern cloud deployment environments, specifically Docker and Kubernetes in Azure . Experience working with Azure DevOps workflows, including pull requests, code reviews, and basic CI/CD execution. Habit of writing automated tests for your own code. Independent, self-starter mindset with the ability to drive tasks independently and navigate established architectures. Fluent English language skills. You need to live in Poland and/or be eligible to work here. What we offer • 100% remote work • Work in a Scandinavian culture built on logic and dialogue. • Health and sports benefits tailored to your needs. • Speed Coaching – short sessions that provide new perspectives and solutions. • Sports training, an internal team, and opportunities to take part in competitions. • Team events and development-focused meetups.

🏢 Summary: Senior Fullstack Developer role for a greenfield project management module, building React front ends with C#/.NET microservices. The position covers end-to-end delivery, automated testing, Azure DevOps CI/CD, and deployments to Kubernetes in Azure, with 100% remote work available. 🗂️ Requirements: React experience, C# and .NET development experience, Microservices architecture knowledge, Docker and Kubernetes experience in Azure, Azure DevOps workflow experience, CI/CD execution experience, Automated unit and integration testing practice, Ability to independently own complex development tasks, Fluent English, Residence in Poland or eligibility to work in Poland 📃 Skills: React, C#, .NET, Microservices, Docker, Kubernetes, Azure, AzureDevOps, CI/CD, GitHubCopilot, Testing 🏢 Description: We are the part of an international organization listed on Nasdaq Stockholm, operating in 11 countries. In Poland, we work with full autonomy. We independently choose our technologies, processes, and ways of working while maintaining the highest professional standards. We deliver a wide range of IT projects in Poland and internationally, across multiple domains and technologies. This allows our consultants to develop their competencies and gain experience aligned with their professional ambitions. Our collaboration is built around the CARE philosophy. For us, it means responsible project matching, transparent cooperation, and a long-term approach to professional growth. Join us as Senior Fullstack Developer. Grow in an environment that cares about your development as much as you do. Your responsibilities Design, develop, and maintain fullstack features with a focus on front-end web application development using React coupled with C# and .NET microservices. Build automated intelligent forms, dynamic UI workflows, and CMS -connected data pipelines for a greenfield project management module. Take ownership of the end-to-end development cycle, including writing automated unit and integration tests, deployment, and monitoring. Collaborate with the team utilizing AI-assisted coding tools like GitHub Copilot to maintain code quality and accelerate delivery. Interact directly with Azure DevOps CI/CD pipelines and push code into a cloud-hosted Kubernetes cluster in Azure . Requirements Experience in React , with the ability to take ownership of complex frontend tasks. Knowledge in Tailwind CSS or UI libraries like shadcn/ui is an advantage. Experience in C# and .NET development, including practical knowledge in microservices architecture. Experience with modern cloud deployment environments, specifically Docker and Kubernetes in Azure . Experience working with Azure DevOps workflows, including pull requests, code reviews, and basic CI/CD execution. Habit of writing automated tests for your own code. Independent, self-starter mindset with the ability to drive tasks independently and navigate established architectures. Fluent English language skills. You need to live in Poland and/or be eligible to work here. What we offer 100% remote work Work in a Scandinavian culture built on logic and dialogue. Health and sports benefits tailored to your needs. Speed Coaching – short sessions that provide new perspectives and solutions. Sports training, an internal team, and opportunities to take part in competitions. Team events and development-focused meetups.

🏢 Summary: Senior Full Stack Developer role delivering and optimizing internal cloud applications in a hybrid Warszawa-based model. The position leads Java and Angular development, solution design, performance improvements, technical delivery, and junior developer mentoring. 🗂️ Requirements: 7+ years of software or application development experience, Java and Spring Boot expertise, Angular, Angular Material, JavaScript, and TypeScript expertise, REST API and microservices architecture experience, Docker or similar container technology experience, Fluent English, Existing legal right to work in Europe, Leadership, mentorship, communication, and collaboration capabilities 📃 Skills: Java, SpringBoot, Angular, AngularMaterial, JavaScript, TypeScript, REST, Microservices, Docker, GitLab, Azure 🏢 Description: Ignite cloud innovation at scale — architect and elevate modern full stack solutions that empower teams to move faster and deliver better impact! Location & Work Model Warszawa-based opportunity with hybrid work model (2 remote days per week). As a Senior Full Stack Developer, you will be working for our client, a leading innovator in cloud-based enterprise solutions. You will be instrumental in delivering and continuously optimizing internal applications that support dynamic business needs. Your expertise will drive project success, foster technical excellence, and enable scalable growth. Your main responsibilities: Lead the development, implementation, and maintenance of full stack applications using Java, Angular, TypeScript, Docker, GitLab, and Azure Cloud Collaborate with internal customers and stakeholders to design, adapt, and optimize custom cloud solutions for internal projects Drive improvements in performance, reliability, and overall solution quality through proactive optimization Coordinate with the team to ensure smooth delivery, clear technical direction, and strong alignment with customer needs Support and mentor junior developers, strengthening team capability and engineering best practices Promote innovation through exploring and applying emerging technologies and modern engineering approaches You’re ideal for this role if you have: 7+ years of experience in software/application development Strong expertise in Java and modern backend development (including Spring Boot) Strong expertise in Angular, Angular Material, and JavaScript/TypeScript Experience building API service architectures (REST, microservices) Hands-on experience with Docker or similar container technologies A self-managed, quality-focused mindset with strong communication and collaboration skills, including leadership and mentorship capabilities It is a strong plus if you have: (optional) Experience with cloud technologies, especially Azure Cloud Experience with build automation and continuous integration tools Language Required for the role: Fluent English Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Oferta dla Senior Software Developera Fullstack obejmuje rozwój systemów frontendowych i mikroserwisów dla biznesu oraz optymalizację procesów w zwinnym zespole. Rola łączy projektowanie i wdrażanie rozwiązań, współpracę z interesariuszami oraz merytoryczne przywództwo w obszarze jakości. 🗂️ Requirements: Doświadczenie: Java 11/17/21, Doświadczenie: Spring Boot, Doświadczenie: Spring Security, Doświadczenie: Kafka, Doświadczenie: Angular, Znajomość: SQL Oracle, Znajomość: REST, Znajomość: architektura mikroserwisowa, Znajomość: CI/CD, Znajomość: Scrum, Wykorzystywanie narzędzi AI w codziennej pracy, Gotowość do roli lidera merytorycznego, Umiejętność współpracy z interesariuszami 📃 Skills: Java, SpringBoot, SpringSecurity, Kafka, Angular, SQL, Oracle, REST, Microservices, CI/CD, Scrum, AI 🏢 Description: Dołącz do zespołu, który rozwija nowoczesne rozwiązania technologiczne i realnie wspiera potrzeby biznesu. Szukamy osoby, która lubi pracować zespołowo, chętnie dzieli się wiedzą i chce mieć wpływ na jakość tworzonych rozwiązań. Senior Software Developer (Fullstack) (K/M) Czym będziesz się zajmować? rozwijaniem systemów frontowych oraz mikroserwisów dostarczających wartość dla Klienta Biznesowego, optymalizacją istniejących procesów wspólnie z zespołem, pracą w zwinnym modelu wytwarzania oprogramowania, współpracą z interesariuszami oraz zespołem developerskim przy projektowaniu i wdrażaniu rozwiązań. Jeśli chcesz rozwijać rozwiązania, które mają realne znaczenie dla biznesu, i lubisz pracować w środowisku nastawionym na jakość, współpracę oraz ciągłe doskonalenie — zapraszamy do pracy z nami! Kogo szukamy? osoby pełnej pasji, otwartej i komunikatywnej, gotowej pełnić rolę lidera merytorycznego, promującej w zespole wysokie standardy jakości oraz zasady pracy zwinnej, potrafiącej reprezentować zespół developerski w rozmowach z interesariuszami, wykorzystującej narzędzia AI w codziennej pracy, aby działać efektywniej, posiadającej wiedzę i doświadczenie w obszarze: Java 11/17/21, Spring Boot, Spring Security, Kafka, Angular, SQL Oracle, REST, architektury mikroserwisowej, CI/CD oraz Scrum. Oferujemy: elastyczne godziny pracy i pracę hybrydową, stabilne zatrudnienie w oparciu o umowę o pracę, nagrodę pieniężną za skuteczne polecenie w ramach Programu Poleceń, ofertę rozwojową i edukacyjną w programie Alior Uniwersytet, obszerny pakiet socjalny (karta multisport, prywatna opieka medyczna, ubezpieczenie, konkursy wewnętrzne, programy zniżkowe i lojalnościowe, 2 dni dodatkowo wolne za wolontariat itp.).