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Open nowPosted 16 days ago

Back-end Engineer – Payments, onboarding and CRM integration

Jit200 open roles

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Your applicationOpen nowBack-end Engineer – Payments, onboarding and CRM integrationJit

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The clock on this job

Early applications get read.

12.1% of postings close within 7 days. Measured by our own scanner across the market. Jit postings stay open a median of 1 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.5%3 days
  3. 12.1%7 days
  4. 19.1%14 days
  5. 35.6%30 days
  6. 52.7%60 days
This job: posted 16 days ago

Jit median: 1 days open

The posting

Salary: 1000-1400 PLN/MD on B2B

Location: Warszawa, Gdańsk, Kraków (with 1-2 days in the office weekly)

Why choose this offer?

  • End‑to‑end ownership with a modern tech stack
  • Stability combined with continuous growth
  • Autonomy and high‑quality collaboration

Project

Join a growing engineering team responsible for building and evolving critical business capabilities around customer onboarding, payments, identity verification and CRM integrations within a modern financial platform. You will work on backend services supporting customer lifecycle management, KYC processes, payment orchestration and integrations with cloud-based identity and CRM solutions. The role requires close collaboration with architects, product teams and other engineers to deliver scalable, reliable and secure solutions in a regulated environment.

Responsibilities you'll have:

  • Design and develop backend services using Java and Spring Boot
  • Build integrations with Microsoft Dynamics 365 / Dataverse
  • Develop and maintain integrations with payment providers and KYC solutions
  • Integrate authentication and identity services based on AWS Cognito
  • Design scalable APIs and microservices
  • Ensure security, reliability and compliance of business-critical systems
  • Collaborate with product owners, architects and cross-functional engineering teams
  • Contribute to technical design decisions and architecture discussions
  • Mentor less experienced engineers and share engineering best practices
  • Leverage AI tools to improve software delivery and engineering productivity

Expected competences and knowledge:

  • 5+ years of commercial experience in backend development
  • Strong experience with Java and Spring Boot
  • Experience designing and developing microservices
  • Hands-on experience with Microsoft Dynamics 365 and/or Dataverse integrations
  • Experience with AWS Cognito or similar identity management solutions
  • Experience integrating external payment providers
  • Understanding of KYC, onboarding or customer verification processes
  • Experience working with cloud environments (AWS preferred)
  • Strong knowledge of REST APIs and integration patterns
  • Good communication skills and fluent English
  • Engineering degree is highly valued

Nice to have:

  • Experience within regulated financial services
  • Experience in trading platforms, brokerage or fintech environments
  • Knowledge of security and compliance requirements in financial systems
  • Experience using AI-assisted development tools in daily engineering work

Technologies you'll work with

  • Java
  • Spring Boot
  • Microservice
  • Microsoft Dynamics 365
  • Dataverse
  • AWS
  • AWS Cognito
  • REST API
  • Payments Integrations
  • KYC Solutions
  • CI/CD
  • Git

Client – why choose this particular client from the Jit portfolio?

Our client is an international financial services organization operating in the capital markets domain, focused on processing and analyzing large volumes of transactional data. The company develops modern data platforms that support trading, operational efficiency, and regulatory reporting. It operates in a fast-paced, highly regulated environment with a strong emphasis on scalability, data quality, and advanced analytics.

About Jit Team

The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.

Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

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