Junior Backend Developer (Banking as a Service - BaaS)

What we do

Hi, we are Vodeno. We are innovators in the Banking-as-a-Service space. Our technology is cloud-native, and our teams work in the cloud like fish in water. Supported by a leading global equity firm and the ecosystem of nearly 90 partners, our Platform opens new opportunities for businesses across Europe to integrate financial products and services into their solutions. As part of the UniCredit Group, Aion Bank and Vodeno will accelerate their digital banking offer in strategic markets and will act as a sandbox for innovation for the wider UniCredit Group. Based on financial sector know-how and expertise in cloud technology, we provide a set-up of customer-facing and daily banking services which include: digital onboarding, accounts, cards, payments, and lending with a white-label mobile app channel access. We are defined by the following values: 

• Client at the centre - we deliver value to our clients

• Curiosity - we want to know more!

• Accountability - we deliver on our promises

• Collaboration - we can achieve more with others

  
  

We are currently looking for a Junior Backend Developer – Banking as a Service (BaaS) ready to join our adventure.

What you will be doing

Most junior jobs ease you in with bug fixes and internal tools. This isn’t one of those. Here, you’ll work in a real fintech production environment where time-to-market matters, and you’ll deal with a wide spectrum of systems — from well-architected, modern microservices to messy, spaghetti-style legacy that still runs business-critical flows.

You’ll also help design and build our next-generation customer platform while supporting client integrations into our existing BaaS stack. Expect to juggle multiple technologies and tasks in parallel, with coding being about 30–50% of your time and the rest on APIs, automation, integrations, and documentation.

The environment is fast-paced and sophisticated, but you won’t be left alone. You will have guidance from a senior developer, integration engineers, and an architect who will review your work, provide direction, and help shape your growth. Over time, you’ll take on bigger responsibilities as your knowledge deepens. 

Please see the list of responsibilities below:

• Backend Development – Contribute to Java/Spring Boot microservices and automation scripts.

• API Work – Assist in designing, documenting, and testing partner-facing APIs.

• Process Automation – Support onboarding workflows using BPMN (Flowable).

• Systems Variety – Work across both beautifully architected systems and spaghetti-style legacy, learning how real-world platforms evolve.

• New Platform – Participate in building a new customer portal platform from scratch.

• Cloud & Ops – Get hands-on with GCP, Kubernetes, Kafka, SQL/NoSQL, CI/CD pipelines, and observability stacks.

• Fintech Learning – Gain exposure to banking/fintech concepts such as onboarding, payments, compliance, and security.

• Guided Growth – Learn directly from senior developers and architects, with mentoring on clean code, resilient design, and best practices.

Skills you should have

You have:

• Programming foundation in Java (Spring Boot preferred).

• Basic understanding of REST APIs and relational databases.

• Curiosity about cloud-native technologies (containers, Kubernetes, CI/CD).

• Ability to learn quickly when faced with multiple unfamiliar systems.

• Independence in problem-solving and persistence when things are unclear.

• Strong motivation to learn both technology and fintech domain knowledge.

  
  

What makes you successful in this role?

• You deliver small but important integration and automation tasks independently.

• You absorb new tools and technologies fast and apply them in real scenarios.

• You steadily move from support work to owning features and integrations.

• You actively engage with feedback and mentoring from senior engineers.

• You contribute to the new customer platform while improving existing systems.

  
  

What we offer

You will get an opportunity to work in an innovative, digital bank applying state of the art approaches and technologies.You will be provided an Individual Development Budget, dedicated to enhancing your professional skills.If your role permits, we also offer flexible work location.You and your closest family will be covered with VIP-level private medical care which includes dental treatment and a hospitalisation package. We care for our colleagues’ well being, therefore we cover psychological consultations if you ever feel you need such support. Aion bank account without fee. We co-sponsor your Multisport card and cover 50% of its cost. You will work on computer equipment that delivers the best user experience — Apple MacBook. Our office in Warsaw offers healthy snacks throughout the day.

Why is this role special?

• Not just bug fixing – you’ll work on production systems and client-facing integrations from day one.

• Massive tech exposure – Java, Spring Boot, APIs, Kafka, GCP, Kubernetes, BPMN, CI/CD, observability, SQL/NoSQL, and more.

• Real fintech knowledge – payments, onboarding, compliance, accounts, and security — you’ll see how modern banking is built.

• Growth with guidance – you’ll be challenged to learn fast, but supported by senior developers and architects who will guide your path.

• System variety – from elegant architectures to legacy spaghetti — you’ll experience the full spectrum of real-world engineering.

• Impact – your contributions help fintechs and banks go live with real products that people use within weeks from contract signature to real users.

Our process

We keep our recruiting process simple. Step 1: Talk with one of our Recruiters about your experience and ambitionsStep 2: Meet with your future team manager for a technical interview Step 3: Meet with Line Manager to discuss how we fit each other

Our note to you

Diverse teams really are the best teams. Research shows that some candidates may hesitate to apply for a job unless they meet every requirement. If you are excited about working with us, we encourage you to apply - even if you're not 100% sure. We are interested in getting to know you and learning about what you bring to the table.Please note that we may close a job posting early if we receive a large number of exceptional applications.Good luck!