Senior Full Stack Developer

Must-have skills and experience: Minimum 5 years of experience with JavaScript, Node.js, and Angular or React. Proven ability to deliver features end-to-end in customer-facing or internal projects. Solid understanding of HTML5, CSS3, and component-based front-end architecture. Hands-on experience with SQL/Oracle (queries, joins, optimization). Familiarity with REST APIs, JSON, and integration workflows. Experience with Git and DevOps-friendly development practices. Understanding of Agile/Scrum methodology and sprint delivery. Problem-solving mindset and ability to design efficient solutions. Solid knowledge of data structures and algorithms. Fluency in Polish and English (working in an international team and American Client). Nice to have: Exposure to Low Code / No Code platforms (e.g., Neutrinos, Mendix, OutSystems). Basic understanding of Docker/Kubernetes and microservices architecture. Familiarity with BPM tools, API orchestration, and system integrations. Experience in the insurance or financial services (BFSI) domain. Strong verbal and written communication skills. We’re a delivery partner of a global tech company specializing in automation for the insurance sector. Join the implementation team working on digital transformation projects for a leading U.S. insurance client as a Full Stack Developer In this role, you'll be actively involved in agile sprints, contributing across the full software development life cycle – from requirements gathering and design to development, deployment, and post-go-live support. We’re looking for a proactive developer with strong technical skills and customer-facing experience who can deliver production-grade solutions. Engagement: project for an American Insurance Customer Location: fully remote across Poland Working hours: as we work for an American customer, we can start the day between 9:00-11:00 am CET Why join us? Remote work (but you can work from our Warsaw office at any time). Personal development budget of 2000 PLN net/year. Co-funding for certifications. Experienced team with strong know-how. Subsidies for private healthcare, sports cards, and life insurance. Internal technical (and non-technical) trainings. Flat structure with real influence on company operations. Innovative team-building trip programs. Fast-paced, delivery-focused team with real impact. Work on modern digital technologies and integration projects. We reach out to every candidate and always provide feedback Get to know us and join the #DecertoTeam ,[Participate in agile sprints and contribute to all phases of the SDLC. , Develop, test, and maintain application modules according to sprint goals. , Collaborate with architects, designers, and business stakeholders. , Ensure code quality through unit testing, peer reviews, and best practices. , Support implementation and stabilization after go-live. , Troubleshoot, debug, and resolve issues or enhancement requests. , Maintain technical documentation and contribute to knowledge sharing. , Take ownership of assigned modules and guide junior developers. ] Requirements: JavaScript, Node.js, Angular, React, HTML5, CSS, SQL, Data structures, Docker, Kubernetes, Microservices architecture, BPM, API Tools: . Additionally: Sport Subscription, Private healthcare, Flat structure, Remote work, Integration events, Life insurance, Small teams, International projects, Training budget, Free coffee, Bike parking, Playroom, Shower, In-house trainings, In-house hack days, Modern office, Startup atmosphere, No dress code.