Senior Java Software Developer

Vyntra Global; Warszawa; Hybrid; PLN 90,000 - 130,000; Full time

Job summary

Vyntra Global, Warsaw-based, is seeking a Backend Software Developer to join the Financial Crime Product Development team in a hybrid setup (2 days on site). You will design and maintain Java backend services within a small autonomous agile team, delivering high-scale, production-grade software for banks and financial institutions.

The role emphasizes building reliable, scalable systems, handling real-time data, and collaborating closely with engineers to solve complex fraud and financial crime

Qualifications

• Experience building and running production systems.
• Strong experience with Java in backend development.
• Experience with distributed or cloud-based systems.
• Good analytical skills and a structured approach to problem solving.
• Experience working in agile development teams.
• Clear and practical communication skills.

Responsibilities

• Design backend services in Java.
• Improve performance, reliability, and scalability.
• Investigate production issues and deliver long-term solutions.
• Work with large data volumes in distributed systems.
• Collaborate with engineers in your team.

Skills

Java backend development

Distributed / cloud systems

Analytical thinking

Agile development teams

Communication skills

Tools

Spring Boot

Kafka

Docker

Kubernetes

SQL databases

Grafana

Job description

Financial Crime Platform, Backend Engineering

Warsaw, Poland | Hybrid 2 days per week on site

Vyntra builds software that helps banks and financial institutions detect fraud, prevent money laundering, and understand transactions at scale.

Our platform processes large volumes of transactional data in real time, combining search technology and AI to provide clear, actionable insights.

The role

You will join our Financial Crime Product Development team as a Software Developer or Senior Software Developer (Java).

Working in a small, autonomous agile team, building and maintaining backend services that are part of a large, enterprise-grade platform used by global banks and making a real difference to the impact of fraud and financial crime.

Your work will include:

• Designing and developing backend services in Java
• Improving performance, reliability, and scalability
• Investigating production issues and delivering long-term solutions
• Working with large data volumes in distributed systems
• Collaborating closely with other engineers in your team

The role level (Software Developer or Senior) will depend on your experience and technical impact.

What we’re looking for

You have experience building and running production systems, and you are comfortable working independently on complex problems.

You have:

• Strong experience with Java in backend development
• Experience with distributed or cloud-based systems
• Good analytical skills and a structured approach to problem solving
• Experience working in agile development teams
• Clear and practical communication skills

You also have experience with, or interest in, some of the following technologies:

• Spring Boot
• Kafka (or other messaging systems)
• Docker and Kubernetes
• SQL databases
• Monitoring and observability tools (for example Grafana)

Experience with Python, TypeScript, Angular, Spark, Elasticsearch, or StarRocks is a plus, but not required.

Why join Vyntra

• Join a close-knit, supportive team where you can make a difference
• Work on real production systems used by major financial institutions
• Solve challenging engineering problems at large scale
• Have ownership of your work and influence technical decisions