Job Title: Java Backend Engineer

Job Description

TEKsystems Banking client are looking for a Back End engineer with strong Java and Spring Boot experience to help build and enhance scalable Back End services that power modern digital banking platforms. The role involves designing and developing microservices and RESTful APIs, working within AWS cloud environments, and collaborating with agile engineering teams to deliver resilient, secure, and high-performing solutions.

Responsibilities

• Design, develop, test, and maintain high-quality Back End services and APIs that support customer-facing financial products.
• Produce clean, maintainable, reusable, and well-documented code that aligns with engineering standards.
• Build highly available, resilient, and scalable microservices to support cloud-native architectures.
• Develop event-driven solutions using modern messaging technologies to support distributed systems.
• Participate in architecture discussions and contribute to technical decision-making for Back End platforms.
• Develop and deploy applications within AWS cloud environments, following best practices for security and scalability.
• Support containerised workloads using Kubernetes and Docker to ensure efficient deployment and orchestration.
• Contribute to infrastructure automation and DevOps best practices to streamline delivery and operations.
• Ensure observability and monitoring across services, promoting operational excellence and reliability.
• Work closely with Product Managers, Engineers, QA Engineers, Designers, and Business Stakeholders to deliver end-to-end solutions.
• Participate in Agile ceremonies including daily stand-ups, sprint planning, retrospectives, and technical refinement sessions.
• Translate business requirements into scalable, robust technical solutions that meet functional and non-functional needs.
• Contribute to continuous improvement initiatives across engineering teams, including process, tooling, and quality enhancements.
• Act as a subject matter expert within the engineering team on Back End technologies and patterns.
• Mentor junior developers, providing guidance, feedback, and support to foster their growth.
• Promote engineering standards, code review best practices, and software craftsmanship across the team.
• Drive innovation and continuous improvement within the Back End engineering chapter, exploring new tools, patterns, and approaches.

Essential Skills

• Strong commercial experience in Back End software development.
• Deep knowledge of Spring Boot and/or Micronaut frameworks for building Back End services.
• Proven experience designing and developing RESTful APIs and microservices.
• Strong understanding of software design patterns and distributed systems.
• experience working with AWS services and cloud-native architectures.
• Hands-on experience with Kubernetes and Docker for containerised workloads.
• Knowledge of messaging technologies and event-driven systems.
• experience working in Agile delivery environments, including participation in standard Agile ceremonies.
• Strong troubleshooting and problem-solving capabilities, particularly in complex distributed environments.

Additional Skills & Qualifications

• experience in financial services, fintech, or other regulated industries.
• experience building highly secure applications and handling sensitive data.
• Expertise in CI/CD pipeline development and automation.
• experience with observability tooling, monitoring, and logging platforms.
• Understanding of data-driven product development and analytics.

Why Work Here?

You will join a modern engineering environment that values collaboration, technical excellence, and continuous improvement. The culture encourages knowledge sharing, mentoring, and innovation, giving you the opportunity to influence architecture and best practices. You will work in cross-functional teams with clear product outcomes, benefiting from Agile ways of working and a strong focus on operational excellence. This environment supports professional growth, exposure to contemporary cloud and container technologies, and the chance to contribute meaningfully to impactful financial products.

Work Environment

You will work in a cloud-native environment built on AWS, using container technologies such as Kubernetes and Docker to deploy and run Back End services. The teams follow Agile delivery practices with regular stand-ups, sprint planning, retrospectives, and technical refinement sessions. The engineering culture places strong emphasis on observability, monitoring, and logging to maintain reliable and resilient systems. You will collaborate closely with product, QA, design, and business stakeholders in a cross-functional setup, using modern tooling and infrastructure automation to support efficient, high-quality delivery.

Location: Warsaw - 2 days per month onsite

This is a B2B contract, so you would be required to have a Spólka z ograniczona odpowiedzialnoscia (Sp. z o.o.) that you can engage through, or be eligible to set one up before starting the role.

Warsaw, Poland

Trading as TEKsystems. Allegis Group Limited, Bracknell, RG12 1RT, United Kingdom. No Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as "Allegis Group"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at our website.

To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go our website.

We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the "Contacting Us" section of our Online Privacy Notice on our website for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield.