Versatile Senior/Expert IT Developer for STO Domain API

Nordea; Helsinki; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Job summary

Nordea's Group Technology is looking for an IT Developer to strengthen the STO Domain API team. The role blends backend coding with analysis, design, deployment automation, and data-model understanding to expose robust services for trading operations.

Based in Helsinki with a hybrid work model, you will collaborate with architects and stakeholders to deliver scalable data products using Kafka, REST, API gateways, and Kubernetes, while mentoring others and embracing responsible AI-assisted

Qualifications

• Strong Java experience in large-scale enterprise systems.

Responsibilities

• Analyse business requirements, data models, system flows and dependencies, and translate them into clear technical designs and implementable delivery tasks.

Skills

Java backend

Requirements analysis

Messaging & API integrations

SQL & Relational databases

CI/CD tooling

Testing (JUnit/Testcontainers)

Kubernetes/OpenShift

Tools

Maven

Git

CI/CD pipelines

Jenkins

Bamboo

Testcontainers

Kafka

IBM MQ

Kubernetes

Job description

Job ID: 5420Welcome to Group Technology, where we pride ourselves on engineering solutions and direct Nordea’s transformation by providing a holistic technological view and structured understanding of the bank, and its surrounding environment to enable the Customer Vision and the Business Strategy.

We are looking for a skilled and versatile IT Developer to strengthen the STO Domain API team. The role combines hands‑on backend development with analysis, integration design, deployment automation, data‑model understanding and willingness to learn the securities trading domain. This a permanent, full‑time position with hybrid working according to Nordea guidelines.

At Nordea, technology supports secure and responsible financial services at Nordic scale. In this role, your work will contribute to simplifying the securities technology landscape and improving how services are exposed to internal consumers across trading operations.

About Our Team

Meet the Securities Trading Operations development team. Our role is to build and modernise services that support safekeeping, settlement, asset servicing and related trading operations processes.

The STO Domain API is a strategic in‑house developed integration layer that exposes common business services as data products. It hides technical complexity and data location, replacing point‑to‑point integrations with canonical services available through API Gateway.

The solution is built around System APIs, connectors, internal integration services and business logic components. It is intended to support use cases such as retrieving safekeeping account details, holdings, transactions, position information and other custody‑related services. The target platform includes API Gateway/Kong, Kubernetes, Kotlin, Kafka and PostgreSQL, while the broader team also works with Java, IBM MQ, CI/CD and automated testing.

The growing team’s strategy is to increase resilient delivery capacity, strengthen mentoring and add future‑proof skills across development, analysis, integration, automation and responsible use of AI‑assisted development.

Main responsibilities in this role:

• Analysebusiness requirements, data models, system flows anddependencies, andtranslate them into clear technical designs and implementable delivery tasks.
• Design, develop andmaintainservices in and around the STO Domain API, including backend code, connectors, integrationservicesand transforming logic.
• Set up and improve integrations with source systems using Kafka, IBM MQ, RESTservicesand related enterprise integration patterns.
• Configure and improve the deployment toolchain, including build pipelines, automated tests, deployment automation, monitoring and troubleshooting support.
• Contribute to code reviews, documentation, quality improvements, technicalstandardsand knowledge sharing across the team.

Who You Are

This is the right role for you if you are a versatile backend developer with broad technical curiosity. You are comfortable moving between development, analysis, integration,and DevOps. You do not need to start as a trading‑domain expert, but you should want to understand how the business process works and how technology choices affect resilience,maintainabilityand risk.

You take ownership of problems also when the answer is not obvious. You ask structured questions, document what matters, collaborate with architects and stakeholders, and help the team build maintainable solutions rather than isolated quick fixes.

Your background and skills include:

• Strong Java experience in large‑scale enterprise systems.
• Ability to analyse requirements, data models, documentation, and cross‑system dependencies.
• Experience with messaging, data transformations, and API integrations from both analysis and development standpoint.
• Solid knowledge of SQL, relational databases, datastores, messaging (Kafka, IBM MQ or similar).
• Experience with Maven, Git, CI/CD pipelines, Jenkins/Bamboo, or comparable tools.
• Testing experience with JUnit, Testcontainers, and automated regression/integration testing.

It would be ideal if you also:

• Have experience in banking, securities trading, custody, settlement, corporateactionsor another regulated domain.
• Have practical experience with Kubernetes, OpenShift‑style platforms,containerisation, cloud‑readydesignand publishing through Kong or similar API Gateway.
• Have acted as a technical lead, mentor, coderevieweror a design sparring partner for less experienced colleagues.
• Have practical experience with AI‑assisted development tools, test automation, static code analysis and other productivity‑enhancing engineering practices.

What We Offer

Collaboration. Ownership. Passion. Courage. These are the values that guide us in how we work and how we make decisions – and that we imagine you share with us.

People are driven by many different factors. For some, it’s to take their career to the next level. For others, it’s to break new ground within their area of expertise – in other words, with us, you will always move forward.

A culture that foster performance and growth in one of the largest Nordic banks, offering various opportunities to evolve, develop and learn from brilliant colleagues with diverse backgrounds in a vibrant working environment.

Hybrid working model – we believe in the value of bringing people together and at the same time we embrace the freedom of flexibility.

Diversity and inclusion are a natural part of our daily work. We know that an inclusive workplace is a sustainable one. We genuinely believe that our diverse backgrounds, experiences, characteristics and traits make us stronger together. Every day we strive to find new ways to improve diversity and inclusion within our community e.g. we have signed the European Diversity Charters in the countries where we operate to show our commitment and engage with others to continue learning and improving.

We enable dreams and aspirations for a greater good.

We build relationships. We add a personal touch to everything we do – when advising our customers, collaborating with colleagues, and meeting our potential candidates.

We learn and develop. We take pride in being experts and thinking ahead. We use our expertise to meet our customers’ needs, from the simplest to the most complex. We bring a growth mindset to our work that enables us to focus on a broader perspective in our daily challenges.

We lead change. We are responsible and aware of the impact of our decisions, both for our customers and for our local and global communities. Mindful of our responsibility towards current and future generations, we have made sustainability an integrated part of our business strategy.

We are Nordea. We have a 200-year history of supporting and growing the Nordic economies and our values are deeply rooted in these open, progressive and collaborative societies. As one of the biggest employers in the Nordics, Poland and Estonia, you have excellent opportunities to evolve, develop and move forward with us.

Studies show that members of underrepresented communities don’t apply for jobs unless they tick all the qualification boxes. If this is part of why you hesitate to apply, we would like you to reconsider and give it a chance. Maybe your profile fits our needs much better than you think.

A security clearance will be performed for the person selected for this position.