Eqt partners

Fullstack Engineer

Warszawa, Masovian Voivodeship, Poland Full Time

 

As a FullStack Engineer with a backend focus in the Fintech team, you will design and build scalable backend systems, APIs, and integrations that power EQT’s financial and operational platforms. This role combines strong system design, cloud infrastructure, and database expertise with close collaboration across an international team.

About the Fintech team

The Fintech team is part of EQT’s Technology organization and focuses on building and maintaining the financial systems and integrations that support EQT’s private markets operations. The team plays a key role in ensuring accurate, secure, and scalable handling of financial and operational data across the Group.

You will join a distributed team of around 20 engineers and product managers located across four countries. We work closely with FullStack, Application, and Data Engineers to design robust integrations, reliable APIs, and modern cloud-based solutions that enable transparency, efficiency, and control in our financial processes.

About the role

As a FullStack Engineer with a backend focus, your main objective is to design, develop, and maintain reliable, scalable, and secure backend systems and integrations within the Fintech domain. You will contribute to core financial platforms and ensure they are built for performance, auditability, and long-term sustainability.

Key responsibilities include:
  • Design, develop, document, and maintain performant, reliable, auditable, and secure backend systems.

  • Build and maintain RESTful APIs and system integrations, both internal and third-party.

  • Develop and maintain an internal master data management-like system for creating and managing master records and mapped data points.

  • Model and implement secure, scalable relational databases, primarily using PostgreSQL.

  • Maintain and optimize backend infrastructure in Google Cloud Platform.

  • Write clean, standardized, testable, and reusable TypeScript and Node.js code.

  • Collaborate with FullStack, Application, and Data Engineers to expose and consume data through well-designed APIs.

  • Lead technical initiatives from design through deployment, ensuring smooth delivery and high quality.

  • Contribute to integration testing and promote best practices in system design and security.

About you

You are a structured and thoughtful engineer who enjoys solving complex backend challenges in the context of financial systems. You take ownership of your work, communicate clearly, and are comfortable driving multiple initiatives independently. You value strong system design, secure coding practices, and collaboration across disciplines and cultures.

Essential skills and experience:
  • Proven experience building backend systems and integrations using TypeScript and Node.js.

  • Experience developing RESTful APIs and working with relational databases such as PostgreSQL.

  • Experience with cloud infrastructure, preferably Google Cloud Platform.

  • Experience with React or similar frameworks such as Next.js.

  • Experience with Kubernetes and containerized deployments.

  • Experience with integration testing and version control using Git.

  • Strong understanding of database design, caching concepts, and secure development practices.

  • Ability to collaborate effectively with Data Engineers on data modeling and data integration topics.

  • Professional fluency in written and spoken English.

Nice to have:
  • Experience with NestJS.

  • Experience with infrastructure as code tools such as Terraform.

  • Experience working with microservices architectures.

  • Experience with caching technologies such as Redis or Memcached.

  • Experience with single sign-on solutions and tools such as Cloudflare or Okta.

  • Experience documenting APIs using OpenAPI or similar standards.

  • Experience with Python.

  • Experience leveraging AI coding tools in daily development workflows, with careful review of generated code.

What we offer

At EQT, you will work in a purpose-driven global private markets firm where technology is central to how we operate and create value. In the Fintech team, you will contribute to platforms that directly support financial reporting, data integrity, and operational excellence.

We offer:

  • A collaborative and international team environment across multiple countries.
  • The opportunity to shape and modernize business-critical financial systems.
  • Exposure to modern cloud infrastructure, scalable integration patterns, and database design.
  • A culture that values initiative, continuous learning, and knowledge sharing.
  • A workplace where diverse perspectives and different ways of thinking are welcomed and encouraged.

Inclusion at EQT

Our vision for EQT employees is to build high performing & engaged teams. Our competitive edge comes from fostering an environment where every individual feels valued, empowered, and motivated to drive business impact. Our commitment to inclusion is not just about fairness; We understand and believe that being a great place to work drives the best performance.At EQT, inclusion is a business imperative and it's embedded into our talent strategy, decision-making, and culture to ensure that every individual and team operates at their full potential. By doing so, we unlock better collaboration, stronger innovation, and superior investment outcomes.

About EQT

EQT is a purpose-driven global investment organization focused on active ownership strategies. With a Nordic heritage and a global mindset, EQT has a track record of almost three decades of developing companies across multiple geographies, sectors and strategies. EQT has investment strategies covering all phases of a business’ development, from start-up to maturity. EQT has EUR ‌​​269 billion in total assets under management (EUR ‌​​‌136 billion in fee-generating assets under management), within two business segments – Private Capital and Real Assets.

With its roots in the Wallenberg family’s entrepreneurial mindset and philosophy of long-term ownership, EQT is guided by a set of strong values and a distinct corporate culture. EQT manages and advises funds and vehicles that invest across the world with the mission to future-proof companies, generate attractive returns and make a positive impact with everything EQT does. EQT has offices in more than 25 countries across Europe, Asia and the Americas and has more than 1,900 employees.

More info: www.eqtgroup.com
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