Backend Developer
12-month contract backend engineer building and scaling cloud-native Banking-as-a-Service microservices in Java (Spring Boot/Micronaut) on AWS with Kubernetes, Docker, and Kafka for a large banking client. Mostly remote, with 2 onsite days per month in Warsaw.
- Compensation
- Not disclosed
- Location
- Poland
- Work setup
- Hybrid
- Seniority
- Not specified
- Employment
- Contract
- Experience
- Not specified
- Category
- Backend
- Posted
Skills
Must have
- Strong commercial experience with Java development
- Deep knowledge of Spring Boot and/or Micronaut frameworks
- 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 such as Kafka and event-driven systems
- Experience working in Agile delivery environments
- Strong troubleshooting and problem-solving capabilities
Nice to have
- Financial services, fintech, or regulated industry experience
- Experience building highly secure applications
- CI/CD pipeline development and automation expertise
- Experience with observability tooling, monitoring, and logging platforms
- Understanding of data-driven product development and analytics
Full description
Description
We are partnering with one of the largest banking and financial services organisations in seeking a highly skilled Backend Engineer to join one of our cross-functional product teams responsible for building and scaling next-generation Banking-as-a-Service (BaaS) capabilities. The successful candidate will help design, develop, and maintain secure, cloud-native backend systems that power customer-facing financial products and services.
This is a 12-month contract with a strong likelihood of extension, offering a predominantly remote working model with just 2 days onsite per month in Warsaw, Poland.
Key Responsibilities
Software Engineering
- Design, develop, test, and maintain high-quality backend services and APIs.
- Produce clean, maintainable, reusable, and well-documented code.
- Build highly available, resilient, and scalable microservices.
- Develop event-driven solutions using modern messaging technologies.
- Participate in architecture discussions and contribute to technical decision-making.
Cloud & Infrastructure
- Develop and deploy applications within AWS cloud environments.
- Support containerised workloads using Kubernetes and Docker.
- Contribute to infrastructure automation and DevOps best practices.
- Ensure observability, monitoring, and operational excellence across services.
Collaboration & Delivery
- Work closely 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.
- Contribute to continuous improvement initiatives across engineering teams.
Technical Leadership
- Act as a subject matter expert within the engineering team.
- Mentor junior developers and support knowledge sharing.
- Promote engineering standards, code review best practices, and software craftsmanship.
- Drive innovation and continuous improvement within the backend engineering chapter.
Required Skills & Experience
- Strong commercial Experience with Java development.
- Deep knowledge of Spring Boot and/or Micronaut frameworks.
- 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 such as Kafka and event-driven systems.