Full Stack Java ISO Team

Strategic Staffing Solutions International’s client is a leading global investment bank and financial services firm, known for working with top companies, governments, and institutions. With a strong worldwide presence, they focus on investment banking, markets, asset management, and consumer finance.

They are seeking an experienced and independent Software Engineer to join their Engineering teams (Payments / Electronic Trading) on a 6–12 month hybrid contract in Warsaw (4 days office / 1 day remote).

Key Responsibilities

Resolve production issues in high-performance trading or payments systems

Build automation tools and improve operational efficiency

Develop and enhance Java/Python-based microservices and APIs

Work with SWIFT / ISO20022 messaging or trading platforms

Support CI/CD, releases, and monitoring improvements

Collaborate with global engineering, infrastructure, and business teams

Requirements & Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field

• 4+ years of software engineering experience

• Strong skills in Java (11/17/21), Spring, Spring Boot, Hibernate, DB2

• Experience with Apache Kafka and event-driven architectures

• Knowledge of MongoDB and data modelling

• Experience with Maven , Docker , and RESTful APIs

• Solid understanding of microservices / distributed systems

• Familiarity with Git and CI/CD pipelines (GitLab CI preferred)

• Linux and production support experience

• Preferred

• IBM MQ / JMS (queue managers, channels)

• Infrastructure as Code (IaC)

• ISO 20022 / SWIFT / CBPR+ / FIN

• Python scripting

• Angular

• Experience in financial services / payments / banking tech

• Strong analytical and problem-solving skills

• Ability to collaborate effectively in global teams

• Commercial mindset with strong focus on code quality

• Strong communication skills, ownership, and proactive attitude

What we offer

• Work in a top-tier global investment banking environment

• Hybrid working model (Warsaw)

• Exposure to mission-critical financial systems

• Contract until 31-Dec-26 contract, with potential extension

Salary – FTE: up to 24,200PLN gross / B2B: up to 200PLN p/h