Senior Full-Stack Developer (with Optimizely)

🏢 Summary: Senior .NET Developer role focused on designing, building, and maintaining scalable .NET applications and APIs across diverse projects, including AI-driven and legacy modernization initiatives. The position involves backend development, architectural input, code quality improvement, and cloud-based deployments within Agile teams. B2B contract with flexible remote collaboration. 🗂️ Requirements: 5+ years experience with C# and .NET, .NET Core / .NET 6+ experience, ASP.NET Core experience, Entity Framework experience, Experience building RESTful APIs, SQL and NoSQL database experience, Cloud platform experience (AWS, Azure, or GCP), CI/CD pipeline knowledge, Git version control proficiency, Understanding of OOP and design patterns, Experience in Agile/Scrum, English level B2+ 📃 Skills: C#, .NET, .NETCore, ASP.NET, EntityFramework, REST, SQL, PostgreSQL, MySQL, MongoDB, AWS, Azure, GCP, CI/CD, Git, OOP, Scrum, AI 🏢 Description: Who we are: We are Inspeerity (part of DevelopX group), engineering consultancy providing software development and consultancy. Our primary expertise is systems architecture and full stack development – from defining project requirements, to designing, building, and deploying software applications for web, backend, enterprise and mobile. We are crazy about technology, serious about people. About position: We are currently building our talent pool for future Senior .NET Developer roles. As our company is expanding, you may have the opportunity to work on a variety of software solutions across multiple initiatives, including projects we will be delivering in the future, from building native AI solutions to modernizing legacy systems. If you enjoy collaborating in a skilled team and are committed to delivering top-notch software, we’d love to connect. We're not prescriptive about background. Whether you've worked in fintech, SaaS, e-commerce, or enterprise systems, what matters is that you've shipped production software at scale, cared about its reliability, and learned from what broke. TL;DR • Who: Senior .NET Developer • Contract Type: B2B Framework Agreement • Salary range: Up to 150 PLN/h • Company: Software House What you’ll be doing: • Designing, implementing, and maintaining high-quality .NET applications. • Developing backend components and APIs to support scalable software solutions. • Collaborating with cross-functional teams. • Reviewing and refactoring code to ensure maintainability, performance, and security. • Participating in technical design discussions and contributing to architecture decisions. • Writing and maintaining technical documentation for systems, APIs, and processes. • Supporting deployment and integration of applications in different environments. You will be the best fit if you have: • 5+ years of experience as a C#/.NET developer, preferably with exposure to .NET Core / .NET 6+ , ASP.NET Core , Entity Framework or similar frameworks. • Strong understanding of object-oriented programming, design patterns, and clean code principles. • Experience with RESTful APIs and web services integration. • Familiarity with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB). • Experience with cloud environments such as AWS, Azure, or GCP. • Knowledge of CI/CD pipelines and version control systems (e.g., Git). • Strong problem-solving skills and ability to troubleshoot complex issues. • English level B2 or higher. • Experience working in Agile/Scrum teams and contributing to iterative development. • Experience with AI technologies, including using AI tools for development and building AI-powered features or applications. What we offer • Remote work or working from our Bialystok, Warsaw, Rzeszow offices. It's up to you! • Collaboration with experienced and engaged people who will appreciate your work and support you whenever you need it 😊 • Hybrid and flexible cooperation model based on a B2B Framework Agreement. • Great working conditions and best equipment: Dell or MacBook, your choice. Good to know: We don’t require a degree. We don’t do whiteboard puzzles or trick questions. Our interview process is practical: a technical conversation, and a chat about how you work. We value direct communication and intellectual curiosity. If you’re someone who gets excited debugging a tricky concurrency issue - not because you have to, but because you want to understand it — we’ll get along well.

🏢 Summary: Senior Full Stack Developer role focused on building scalable, secure cloud-native applications across the full stack. The position involves backend and frontend development, as well as deploying and managing solutions on Microsoft Azure using containerization technologies. Hybrid work model with 3 days per week on-site in Wroclaw. 🗂️ Requirements: Expert-level experience in at least 3 of: Java, Python, Hands-on experience with Azure, Hands-on experience with Kubernetes, Hands-on experience with TypeScript, Hands-on experience with React, Hands-on experience with Rust or Node.js, Extensive experience with Microsoft Azure cloud platform, Strong proficiency in multiple programming languages and frameworks, Experience working in agile development environments 📃 Skills: Java, Python, Rust, Node.js, React, TypeScript, Azure, Kubernetes, Cloud, DevOps 🏢 Description: We are seeking a versatile and experienced Senior Full Stack Developer to join our dynamic team working on cutting-edge cloud-native applications. This role involves developing scalable, secure, and high-performance solutions using modern technologies across the full technology stack. You will work on innovative projects that leverage cloud platforms and containerization technologies to deliver exceptional user experiences Our client is a leading technology company focused on building next-generation digital solutions. They are committed to innovation and excellence in delivering cloud-based applications that serve millions of users worldwide. This role offers a hybrid model with 3 days per week working from the client's office in Wroclaw, Poland Ready to launch your career in cloud engineering? Apply now and join our global team. Responsibilities Design and develop robust backend services using Java, Python, Rust or Node.js Build responsive and intuitive front-end interfaces with React and TypeScript Architect and deploy cloud-native applications on the Microsoft Azure platform Manage infrastructure as code using Terraform and modern DevOps practices Orchestrate and maintain containerized applications with Kubernetes Collaborate with cross-functional teams to deliver comprehensive end-to-end solutions Requirements Expert-level experience in at least 3 of the following technologies: Java and/or Python Hands-on experience with: Azure, Kubernetes, TypeScript, React, Rust, Node.js Strong proficiency in multiple programming languages and frameworks Extensive experience with cloud platforms, particularly Microsoft Azure Proven ability to work effectively in fast-paced agile development environments Strong problem-solving skills and attention to detail Excellent communication and collaboration abilities Nice to have Experience with infrastructure as code tools like Terraform Knowledge of DevOps practices and CI/CD pipelines Understanding of microservices architecture patterns Experience with containerization and orchestration technologies Familiarity with modern software development methodologies and best practices Previous experience working in cross-functional international teams We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 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 Full-stack Developer role in a long-term SharePoint (Server SE/Online) project focused on designing and developing key system components, integrations, and modernizations within the Microsoft ecosystem. The position combines backend development in .NET with SPA development (Angular/React) embedded in SharePoint, along with architectural influence and CI/CD automation. The role includes technical leadership, code quality oversight, and participation in system integrations. 🗂️ Requirements: Minimum 5 years experience as Full-stack or .NET Developer, Strong knowledge of ASP.NET, Strong knowledge of C#, Strong knowledge of .NET Core, Experience with Angular or React, Experience with Entity Framework, Experience with Fluent UI 2 or Fluent Design System, Experience integrating with Microsoft Entra ID, Experience with SharePoint Server or SharePoint Online, Experience with application containerization, Experience with CI/CD automation, Experience with Azure DevOps Server, Knowledge of branching strategies and code review practices, Very good Polish language skills, Communicative English skills 📃 Skills: ASP.NET, C#, .NET, Angular, React, SPFx, SharePoint, EntraID, EntityFramework, FluentUI, OpenShift, AzureDevOps, CI/CD, CSOM, PnP 🏢 Description: Do projektu realizowanego w środowisku SharePoint Server SE i/lub SharePoint Online (modern + SPFx) poszukujemy Senior Developera (Full-stack), który będzie odpowiedzialny za projektowanie i rozwój kluczowych komponentów systemu oraz nadzór nad jakością techniczną wytwarzanego oprogramowania. Zespół pracuje w oparciu o analizy biznesowe, projekty funkcjonalne oraz wytyczne architektoniczne. Odpowiadamy za rozwój nowych funkcjonalności, integracje systemowe oraz utrzymanie i modernizację istniejących rozwiązań w ekosystemie Microsoft. Oferujemy Udział w długofalowym, strategicznym projekcie IT Współpracę z doświadczonym, zgranym zespołem Realny wpływ na architekturę i kierunek rozwoju rozwiązania Stabilną współpracę w modelu B2B Elastyczny model pracy (hybrydowy) Obowiązki Projektowanie rozwiązań technicznych zgodnych z architekturą systemu Implementacja kluczowych funkcjonalności w warstwie back-end ( ASP.NET / C# / .NET Core Web API) Rozwój aplikacji SPA (Angular / React) osadzanych w SharePoint (SPFx / model klasyczny) Integracja z Microsoft Entra ID oraz SharePoint Server / SharePoint Online (PnP Framework / CSOM) Udział w projektowaniu integracji systemowych Code review oraz mentoring członków zespołu Automatyzacja i utrzymanie procesów CI/CD (Azure DevOps Server) Dbanie o jakość kodu, standardy inżynierskie i dobre praktyki developerskie Wsparcie procesów releasowych i rozwiązywanie problemów technicznych Wymagania Minimum 5 lat doświadczenia w roli Full-stack / .NET Developera Bardzo dobra znajomość ASP.NET / C# / .NET Core Doświadczenie w pracy z Angular lub React Znajomość Entity Framework Doświadczenie w pracy z Fluent UI 2 / Fluent Design System Praktyka w integracji z Microsoft Entra ID Doświadczenie w pracy z SharePoint Server / SharePoint Online Doświadczenie w konteneryzacji aplikacji (OpenShift) Znajomość pracy z repozytoriami i standardów utrzymania jakości kodu (branching strategies, code review) Bardzo dobra znajomość języka polskiego oraz komunikatywna znajomość angielskiego

🏢 Summary: B2B contract opportunity for a Senior Node.js Developer to design, build, and maintain scalable backend applications and APIs across diverse software projects, including AI-driven and legacy modernization initiatives. The role focuses on high-quality Node.js development, architecture contribution, and cloud-based deployments in Agile teams. 🗂️ Requirements: 5+ years of experience in Node.js development, Experience with Express.js or NestJS frameworks, Strong knowledge of JavaScript and TypeScript, Understanding of asynchronous programming and event-driven architecture, Experience building and integrating RESTful APIs, Experience with SQL and NoSQL databases, Experience with cloud platforms (AWS, Azure, or GCP), Knowledge of CI/CD pipelines, Experience with version control systems, Experience working in Agile/Scrum teams, English level B2 or higher, Experience with AI technologies and AI-powered features development 📃 Skills: Node.js, Express.js, NestJS, JavaScript, TypeScript, REST, SQL, NoSQL, PostgreSQL, MySQL, MongoDB, AWS, Azure, GCP, CI/CD, Git, AI 🏢 Description: Who we are: We are Inspeerity (part of DevelopX group), engineering consultancy providing software development and consultancy. Our primary expertise is systems architecture and full stack development – from defining project requirements, to designing, building, and deploying software applications for web, backend, enterprise and mobile. We are crazy about technology, serious about people. About position: We are currently building our talent pool for future Senior Node.js Developer roles. As our company is expanding, you may have the opportunity to work on a variety of software solutions across multiple initiatives, including projects we will be delivering in the future, from building native AI solutions to modernizing legacy systems. If you enjoy collaborating in a skilled team and are committed to delivering top-notch software, we’d love to connect. We're not prescriptive about background. Whether you've worked in fintech, SaaS, e-commerce, or enterprise systems — what matters is that you've shipped production software at scale, cared about its reliability, and learned from what broke. TL;DR • Who: Senior Node.js Developer • Contract Type: B2B Framework Agreement • Salary range: Up to 150 PLN/h • Company: Software House What you’ll be doing: • Designing, implementing, and maintaining high-quality Node.js applications. • Developing backend components and APIs to support scalable software solutions. • Collaborating with cross-functional teams. • Reviewing and refactoring code to ensure maintainability, performance, and security. • Participating in technical design discussions and contributing to architecture decisions. • Writing and maintaining technical documentation for systems, APIs, and processes. • Supporting deployment and integration of applications in different environments. You will be the best fit if you have: • 5+ years of experience as a Node.js developer, preferably with exposure to frameworks such as Express.js , NestJS , or similar. • Strong understanding of JavaScript/TypeScript, asynchronous programming, and event-driven architecture. • Experience with RESTful APIs and web services integration. • Familiarity with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB). • Experience with cloud environments such as AWS, Azure, or GCP. • Knowledge of CI/CD pipelines and version control systems. • Strong problem-solving skills and ability to troubleshoot complex issues. • Experience working in Agile/Scrum teams and contributing to iterative development. • English level B2 or higher. • Experience with AI technologies, including using AI tools for development and building AI-powered features or applications. What we offer • Remote work or working from our Bialystok, Warsaw, Rzeszow offices. It's up to you! • Collaboration with experienced and engaged people who will appreciate your work and support you whenever you need it 😊 • Hybrid and flexible cooperation model based on a B2B Framework Agreement. • Great working conditions and best equipment: Dell or MacBook, your choice. Good to know: We don’t require a degree. We don’t do whiteboard puzzles or trick questions. Our interview process is practical: a technical conversation, and a chat about how you work. We value direct communication and intellectual curiosity. If you’re someone who gets excited debugging a tricky concurrency issue - not because you have to, but because you want to understand it — we’ll get along well.

🏢 Summary: Senior Full-Stack Developer role focused on building a scalable web platform that enables customers to visualize furniture and decor in their homes using 3D and computer vision technologies. The position involves developing both frontend and backend components of an advanced visualization product. The role includes architectural contributions and optimization of performance and scalability. 🗂️ Requirements: 5+ years software development experience, Strong proficiency in Python, Strong proficiency in Django, Strong proficiency in PostgreSQL, Strong proficiency in AWS, Strong proficiency in TypeScript, Strong proficiency in Next.js, Strong proficiency in React, Strong proficiency in Redux, Strong proficiency in Three.js, Experience building scalable systems, Deep understanding of algorithms, Deep understanding of data structures, Understanding of networking, Understanding of databases, Degree in ComputerScience or equivalent experience 📃 Skills: TypeScript, Next.js, React, Redux, Three.js, Python, Django, PostgreSQL, AWS, Algorithms, DataStructures, Networking, Databases, ComputerVision, 3D 🏢 Description: We’re looking for a Senior Full-Stack Developer to join our team and help build an innovative digital product for the interior decor industry. You will work on an advanced platform that allows customers to preview and visualize furniture and decor items in their homes before making a purchase. The product combines modern web technologies and computer vision to deliver immersive 3D experiences for the home decor industry. Customer Our Customer is a technology company specializing in advanced visualization solutions for the home improvement and interior decor industries. Project By joining this project, you’ll work with a team of engineers to develop a platform that helps users visualize how furniture and decor items will look in their homes before buying them. The solution leverages computer vision and 3D technologies to create interactive and visually rich experiences, enabling customers to easily explore design options and make confident purchasing decisions. Technologies: TypeScript, Next.js, React/Redux, Three.js, Python, Django, PostgreSQL, AWS Requirements 5+ years of software development experience building scalable systems Strong proficiency in both backend (Python, Django, PostgreSQL, AWS) and frontend (TypeScript, Next.js, React/Redux, Three.js) technologies Deep understanding of algorithms, data structures, networking, and databases Degree in Computer Science or equivalent proven experience Strong communication skills and leadership mindset Proactive approach and ability to drive initiatives Mentorship skills for guiding engineers Exceptional attention to detail and focus on quality and long-term goals Responsibilities Design and develop scalable applications across frontend and backend layers Build intuitive user interfaces using TypeScript, Next.js, React/Redux, and Three.js Develop backend services and APIs using Python, Django, PostgreSQL, and AWS Apply computer science fundamentals to optimize algorithms, data structures, networking, and database design Ensure application performance, scalability, and reliability Collaborate closely with engineering, product, and design teams Take ownership of technical solutions and contribute to architectural decisions Mentor and guide other engineers, fostering knowledge sharing and high-quality code standards

🏢 Summary: Senior Full Stack Engineer role focused on building scalable web applications, solving complex technical challenges, and contributing to architecture decisions in a modern product environment. The position involves full-stack development across frontend, backend, and cloud systems using modern technologies. The offer includes remote work, flexible hours, modern equipment, and growth opportunities in a collaborative team. 🗂️ Requirements: 5+ years of Full Stack Software Engineering experience, Strong algorithmic thinking, Knowledge of data structures, Understanding of software design principles, Performance optimization skills, Experience with TypeScript, Experience with React, Experience with Node.js, Experience with SQL databases, Experience across frontend, backend, and cloud environments, Ability to learn new technologies quickly, Fluent English, Strong communication skills 📃 Skills: TypeScript, React, Node.js, SQL, JavaScript, Cloud 🏢 Description: Senior Full Stack Engineer We are looking for a Senior Full Stack Engineer with strong software engineering fundamentals and excellent algorithmic and problem-solving skills . You'll play a key role in designing scalable applications, solving complex technical challenges and driving architectural decisions in a modern product environment. Responsibilities Design, develop and maintain high-performance web applications. Translate complex business requirements into efficient technical solutions. Build scalable frontend and backend services using modern technologies. Contribute to system architecture, code quality and technical improvements. Collaborate with cross-functional teams and take ownership of features from design to deployment. Requirements 5+ years of experience in Full Stack Software Engineering. Strong algorithmic thinking and solid understanding of data structures, software design principles and performance optimization. Experience with TypeScript, React, Node.js and SQL databases. Ability to quickly learn new technologies and solve complex technical problems. Experience working across frontend, backend and cloud environments. Excellent communication skills and fluent English. What We Offer Remote work model with flexible working hours. Opportunity to work with modern technologies and influence technical decisions. High-quality equipment provided. Fast-paced environment with multiple innovative projects and excellent growth opportunities. Collaborative team where ownership, initiative and continuous learning are highly valued.

🏢 Summary: Senior Full Stack Developer role in a hybrid model (Kraków) focused on building and maintaining scalable, mission-critical financial applications. The position involves end-to-end development, from analysis to deployment and support, using Java, React, and SQL. You will contribute to high-quality full-stack solutions while ensuring performance, stability, and adherence to best practices. 🗂️ Requirements: Minimum 5 years of full-stack development experience, Proficiency in Java, Proficiency in SQL, Proficiency in React, Working knowledge of UNIX environments, Understanding of HTTP APIs and RESTful services, Experience with end-to-end software development lifecycle, Fluent English, Legal right to work in the European Union 📃 Skills: Java, React, SQL, Kotlin, UNIX, HTTP, REST, DevOps 🏢 Description: Unleash Innovation — Drive Impact as a Senior Full Stack Developer in Kraków! Kraków-based opportunity with hybrid work model (up to 3 days remote). As a Senior Full Stack Developer , you will be working for our client, a leader in Global Markets Technology, focused on delivering robust, scalable solutions that empower financial services worldwide. Join a dynamic team where your expertise will shape mission-critical applications, enhance operational efficiency, and foster digital transformation. Your main responsibilities: Collaborate within a dedicated team of 4–6 developers, taking ownership of all development phases from analysis to deployment and support. Break down business requirements into user stories and deliver iterative enhancements to production. Design, develop, and optimize full-stack solutions using Java, React, and SQL, ensuring high-quality code and adherence to best practices. Identify and address technical debt, balancing new features with system stability and performance. Participate in pair programming and code reviews to foster knowledge sharing and code excellence. Support existing applications post-deployment, ensuring continuous functionality and performance improvements. Follow technology guidelines and constraints, ensuring solutions are scalable, maintainable, and aligned with project standards. You're ideal for this role if you have: At least 5 years of professional experience in full-stack development or related fields. Strong proficiency in Java, SQL, and React; familiarity with Kotlin is a plus. Working knowledge of UNIX environments. Good understanding of HTTP APIs, particularly RESTful services. Demonstrated willingness to learn new programming languages and frameworks. Excellent communication skills in English. It is a strong plus if you have: Experience with DevOps practices or familiarity with other programming languages. Relevant certifications or training related to full-stack development. Language Required for the role: Fluent English (verbal and written). Eligibility to work in this 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 (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Full-Stack Engineer role with a 50/50 backend and frontend focus, building scalable microservices-based applications using ASP.NET (C#) and React with TypeScript in a cloud-native environment. The position involves designing and maintaining REST APIs, developing responsive user interfaces, ensuring high test coverage, and contributing to architectural decisions with strong technical ownership. Poland-based employment (Umowa o Pracę) with remote flexibility and quarterly in-person collaboration. 🗂️ Requirements: MSc+ in Computer Science or equivalent, Minimum 5 years experience with ASP.NET and C#, Minimum 5 years experience building REST APIs, Minimum 5 years experience with React, Experience with TypeScript, Strong knowledge of microservices architecture, Knowledge of cloud design patterns, Experience with unit, integration, and end-to-end testing, High level of technical ownership, Fluent English (minimum B2), Poland residency 📃 Skills: ASP.NET, C#, REST, React, TypeScript, Microservices, AWS, Agile, DDD, UnitTesting, IntegrationTesting, E2ETesting, Cloud 🏢 Description: We’re looking for a Senior Full-Stack Engineer who brings deep technical expertise and a collaborative mindset to our product development team. You will work with a modern microservices architecture, building scalable backend services using the ASP.NET Web API with C#, and intuitive frontend interfaces using mainly React and TypeScript. This is a hands-on engineering role with a 50/50 front-/backend focus, ideal for someone who likes to take ownership, thrives in a dynamic product team, and enjoys mentoring others. This role could easily become a Tech Lead role in a foreseeable future. If you're passionate about designing high-impact software in a cloud-native environment, 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 (only, no B2B). What you will be responsible for Collaborate proactively in refinement sessions with product and tech teams to ensure clarity and feasibility of features. Design, implement, and maintain scalable web APIs using ASP.NET and microservices architecture principles. Develop responsive user interfaces with React and TypeScript that enhance usability and performance. Work closely with Product Owners to clarify feature requirements and ensure business context is well-understood. Define, design and align feature architecture with the Head of Engineering to ensure consistency and scalability. Ensure features meet Definition of Done, with state-of-the-art unit, integration, and end-to-end test coverage. Support incident response and production issue resolution as per team standards. Actively contribute to team knowledge sharing and coach colleagues in technical best practices. What makes you a match Essential Qualifications: MSc+ in Computer Science or equivalent 5 years of proven experience in building secure REST APIs using ASP.NET , as well as developing solid front-end applications with React are non-negotiable must haves. Comprehensive knowledge of contemporary web application architectures, with a focus on microservices and cloud design patterns. Demonstrated ability of high technical Ownership and Tech Leadership are a requirement for this role. Bonus Skills: Hands-on experience with AWS infrastructure. Experience working in cross-functional product teams using Agile practices and following Domain-Driven Design (DDD). Collaboration and Interpersonal Skills: Clear and adaptive communication with both technical and non-technical stakeholders. Strong sense of ownership, accountability, and proactive problem-solving. Languages: English: B2 - (No certificate required, but Fluency) German, Polish, Ukrainian: desired, not required 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 provider 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 may be asked to verify their identity their identity before speaking with our Recruiter. This step helps us prevent fraud and focus our resources on genuine applicants. About us 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. Four Interviews — 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 Full Stack Developer role focused on building and maintaining scalable cloud-native applications using .NET and Angular. The position involves developing secure and maintainable software, improving production systems, and driving DevOps and engineering best practices. Candidates will also mentor junior developers and contribute to architecture and technical decision-making. 🗂️ Requirements: Extensive experience with .NET Core, Extensive experience with C#, Extensive experience with Angular, Proficiency in REST APIs, Proficiency in microservices, Experience with Docker, Experience with Kubernetes, Experience with AWS cloud technologies, Experience with EKS, Strong DevOps and CI automation practices, Object-oriented programming knowledge, Clean code practices, Ability to conduct code reviews, Mentoring experience, Effective communication skills 📃 Skills: .NET, C#, Angular, REST, Microservices, Docker, Kubernetes, AWS, EKS, DevOps, CI, SQL, NoSQL 🏢 Description: Summary We are seeking an experienced Senior Full Stack Developer specializing in .NET and Angular to join our team. The ideal candidate will have a strong background in object-oriented programming, clean code practices, and cloud-native technologies. This role is critical for supporting the development of a comprehensive software suite that optimizes business decisions across various projects. Main Responsibilities Design and develop scalable, secure, and maintainable products aligned with architecture goals. Lead quality, security, and compliance efforts through best practices in software development. Enhance existing applications in production focusing on reliability and performance. Drive the use of cloud-native engineering practices for application deployment and management. Facilitate technical discussions, support code reviews, and mentor junior engineers. Key Requirements Extensive experience with .NET Core, C#, and Angular. Proficiency in REST APIs, microservices, Docker, Kubernetes, and messaging platforms. Experience with AWS cloud technologies, including Kubernetes (EKS) and cloud storage. Strong DevOps practices for automation and continuous integration. Effective communication skills and the ability to mentor and influence team direction. Nice to Have Knowledge of SQL or NoSQL databases. Experience with test automation and release management tools.