Cloud-Native Backend Engineer – FinTech Microservices

Enfint; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Onsite in Warsaw 2 days/month

Job summary

TEKsystems supports a banking client in Warsaw to build scalable backend services and APIs for modern digital banking platforms. You will design, develop, test, and maintain microservices in Java, run on AWS, with Kubernetes and Docker for deployment, while adhering to engineering standards.

Join a collaborative team working in an Agile environment to shape architecture decisions, mentor juniors, and implement observability, CI/CD, and secure, resilient systems.

Qualifications

• Strong commercial experience in backend software development.
• Deep knowledge of Spring Boot and/or Micronaut.
• Proven experience designing and developing RESTful APIs and microservices.
• Strong understanding of software design patterns and distributed systems.
• Experience with AWS services and cloud-native architectures.
• Hands-on experience with Kubernetes and Docker.
• Knowledge of messaging technologies and event-driven systems.
• Experience working in Agile delivery environments.
• Nice to have: fintech or regulated industries experience; CI/CD, observability tooling, monitoring and logging.

Responsibilities

• Design, develop, test, and maintain backend services and APIs supporting customer-facing financial products.
• Produce clean, maintainable, reusable, and well-documented code aligned with engineering standards.
• Build highly available, resilient, and scalable microservices for cloud-native architectures.
• Develop event-driven solutions using modern messaging technologies.
• Participate in architecture discussions and contribute to technical decision-making for backend platforms.
• Develop and deploy applications within AWS cloud environments.
• Support containerised workloads using Kubernetes and Docker.
• Contribute to infrastructure automation and DevOps practices.
• Ensure observability and monitoring across services.
• Collaborate with Product Managers, Engineers, QA Engineers, Designers, and Business Stakeholders.
• Participate in Agile ceremonies, including stand-ups, sprint planning, retrospectives, and technical refinement sessions.
• Translate business requirements into scalable technical solutions meeting functional and non-functional needs.
• Contribute to engineering process, tooling, and quality improvements.
• Act as a subject matter expert on backend technologies and patterns.
• Mentor junior developers by providing guidance, feedback, and support.
• Promote engineering standards, code review practices, and software craftsmanship.
• Drive innovation and continuous improvement within the backend engineering chapter.

Skills

Backend development

Spring Boot

Micronaut

RESTful APIs

Microservices

Software design patterns

AWS

Cloud-native architectures

Kubernetes

Docker

Event-driven systems

Agile

Troubleshooting

Fintech experience

Tools

CI/CD tooling

Job description

TEKsystems supports a banking client in Warsaw to build scalable backend services and APIs for modern digital banking platforms. You will design, develop, test, and maintain microservices in Java, run on AWS, with Kubernetes and Docker for deployment, while adhering to engineering standards.

Join a collaborative team working in an Agile environment to shape architecture decisions, mentor juniors, and implement observability, CI/CD, and secure, resilient systems.