June 9, 2026

Full Stack Developer

Senior • Hybrid

Warsaw, MZ, Poland

Senior Full Stack Engineer (Node.js & TypeScript)

About the Role

We are looking for a Senior Full Stack Engineer to join a team building and scaling a global cloud-based platform. In this role, you will work on both backend services and modern web applications, helping to design highly scalable systems that process large volumes of real-time data while delivering seamless user experiences.

Responsibilities

System Architecture

  • Design and develop scalable microservices using Node.js and TypeScript.
  • Ensure high availability, reliability, and low latency across distributed systems.
  • Contribute to architectural decisions and long-term platform scalability.

Backend Development & Event-Driven Systems

  • Build and optimize event-driven and asynchronous workflows.
  • Work with messaging technologies such as Kafka or RabbitMQ.
  • Design solutions capable of handling large-scale real-time data processing.

API Design

  • Own the design and evolution of APIs.
  • Create high-performance, type-safe interfaces connecting multiple services and applications.
  • Promote best practices around API versioning and contract-driven development.

Frontend Development

  • Develop modern web applications using React and Next.js.
  • Focus on performance, maintainability, and excellent user experience.
  • Implement efficient state management solutions and responsive interfaces.

Quality & Reliability

  • Design and maintain comprehensive testing strategies, including Unit, Integration, and End-to-End testing.
  • Work with tools such as Jest, Vitest, and Playwright.
  • Contribute to a culture focused on code quality and system reliability.

Requirements

  • 5+ years of experience in software engineering.
  • Strong expertise in Node.js and TypeScript.
  • Experience designing and implementing event-driven architectures.
  • Advanced knowledge of asynchronous programming patterns.
  • Proven experience designing and maintaining complex APIs.
  • Strong frontend development skills with React and Next.js.
  • Hands-on experience with automated testing frameworks.
  • Experience with SQL and/or NoSQL databases.
  • Familiarity with search technologies such as Elasticsearch or OpenSearch.
  • Professional-level English communication skills.
  • Ability to collaborate across teams and support technical decision-making.

Nice to Have

  • Interest or experience in AI-related projects.
  • Knowledge of vector databases.
  • Experience building services in Python.

What’s Offered

  • Opportunity to work on large-scale, modern cloud solutions.
  • Influence on architecture and technical direction.
  • Collaborative engineering culture with knowledge-sharing initiatives.
  • Stable employment in an international environment.
  • Flexible working hours and hybrid work model.
  • Comprehensive benefits package, including private healthcare, sports card, insurance options, and additional employee perks.

Why apply for an Antal job offer?

When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process.

About Antal

Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research.

Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

Discover our latest job openings: https://en.antal.pl/candidates
Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

 

 

 

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Hybrid

Krakow, Poland

🏢 Summary: Senior Frontend Developer role focused on designing and building modern web applications using React and TypeScript, with strong involvement in architecture and UX improvements. The position emphasizes ownership of frontend solutions, performance optimization, and contribution across the full SDLC. It is a hybrid B2B opportunity based in Kraków. 🗂️ Requirements: Minimum 5 years of experience developing web applications in React, Strong proficiency in React, Strong proficiency in TypeScript, Experience in UI/UX design, Experience creating wireframes and prototypes, Knowledge of design patterns, Knowledge of frontend best practices, Experience with full Software Development Life Cycle (SDLC) 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, SDLC, UI, UX, Wireframing, Prototyping, DesignPatterns 🏢 Description: 🚀 Senior Frontend Developer (React / TypeScript) Location: Kraków/Hybrid Contract Type: B2B 💡 About the Role We are looking for an experienced Senior Frontend Developer who not only excels in the React ecosystem but also wants to make a real impact on the product — from architecture, through UX, to application stability. This role is perfect for someone who enjoys taking ownership of solutions, proposing improvements, and working closely with both business teams and end-users. 🎯 Responsibilities Design and develop modern web applications using React and TypeScript Implement UI/UX improvements and optimize application performance and stability Contribute to frontend architecture and make technical decisions Analyze requirements and suggest improvements or solutions Create wireframes and prototypes to validate concepts and designs Collaborate with product and technical teams Troubleshoot production issues and provide user support 🧠 Requirements Minimum 5 years of professional experience developing web applications in React Strong proficiency in React and TypeScript Experience in UI/UX design, including wireframes and prototypes Knowledge of design patterns and frontend best practices Experience with full Software Development Life Cycle (SDLC) Excellent problem-solving skills and ability to work under pressure Strong communication and collaboration skills with stakeholders ➕ Nice to Have Experience with CI/CD pipelines and DevOps practices Experience with service management systems (e.g., Jira, ServiceNow) Customer-focused mindset and experience supporting end-users 🎁 What We Offer Real impact on product and technology decisions Opportunity to work with modern frontend technologies Flexible working hours and remote work options Stable long-term project and collaboration Friendly team culture focused on cooperation and growth How to Apply If you want to build modern web applications, influence product decisions, and grow your skills in architecture and UX — we’d love to hear from you! Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

Technology

Antal Sp. z o.o.

Backend Developer

Senior

Hybrid

Krakow, Poland

190 - 230 PLN

🏢 Summary: Hybrid Backend Engineer role focused on designing and building scalable, fault-tolerant backend systems within a microservices and event-driven architecture. The position involves developing secure, production-ready APIs, contributing to modern cloud-native infrastructure, and ensuring high code quality and best practices. You will also support architectural evolution and deliver end-to-end business solutions in a DevOps-driven environment. 🗂️ Requirements: Strong experience with Java 8+, Proficiency in Spring Framework, Spring Boot, Spring Cloud, Hands-on experience with Kubernetes and Docker, Experience with public cloud platforms, Knowledge of Microservices Architecture, Knowledge of Event-Driven Architecture, Experience designing REST and GraphQL APIs, Experience with SQL and NoSQL databases, Experience with messaging systems, Understanding of security mechanisms (JWT, OAuth, TLS), Experience with CI/CD pipelines and DevOps tools, Knowledge of design patterns and scalable system design, Ability to deliver end-to-end backend applications 📃 Skills: Java, Spring, SpringBoot, SpringCloud, Kubernetes, Docker, REST, GraphQL, SQL, NoSQL, Oracle, PostgreSQL, MySQL, MongoDB, Cassandra, Kafka, RabbitMQ, IBMMQ, JWT, OAuth, TLS, Jenkins, GitLab, Microservices, CI/CD, Cloud 🏢 Description: Backend Engineer (Hybrid – 2 days/week in the office) We are looking for an experienced Backend Engineer to join a high-performing engineering team. In this role, you will be responsible for building scalable, high-quality backend systems and contributing to modern architecture initiatives. Responsibilities Design and develop highly scalable, performant, and fault-tolerant applications Contribute to the evolution of Microservices and Event-Driven Architecture Collaborate with Solution Architects and Tech Leads to translate technical designs into production-ready solutions Design systems with a strong focus on security, infrastructure, and data governance standards Contribute to system and API design, ensuring modularity and maintainability Ensure coding standards and promote best practices in development, testing, and documentation Mentor junior engineers, conduct code reviews, and provide technical leadership Ensure compliance with relevant controls, standards, and service management practices Deliver high-quality solutions on time, aligned with business expectations Support team engagement, ownership, and a sustainable, high-quality delivery pace Requirements Strong experience with Java 8+ , Spring Framework , Spring Boot , Spring Cloud Hands-on experience with Kubernetes , Docker , databases, and public cloud platforms Deep understanding of Microservices Architecture and Event-Driven Architecture Strong knowledge of design patterns and principles (focus on scalability and maintainability) Expertise in designing and developing APIs ( REST , GraphQL ) Experience with both SQL and NoSQL databases (e.g. Oracle, PostgreSQL, MySQL, MongoDB, Cassandra) Experience with messaging/middleware technologies (e.g. Kafka, IBM MQ, RabbitMQ) Understanding of security mechanisms (JWT, OAuth, TLS, authentication & authorization) Experience with DevOps tools and CI/CD pipelines (e.g. Jenkins, GitLab, Kubernetes, Docker) Proven experience in technical leadership and working with cross-functional teams Ability to deliver end-to-end business applications with high quality and low maintenance overhead Basic understanding of frontend-backend integration Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland