Software Engineer F/H/X

As a Software Engineer at Teamwill Consulting, you design, build, test, and operate production software across the full stack: back end, front end, and the data layer in between.

Putting domain expertise and artificial intelligence at the heart of the decisions that finance millions of projects, vehicles, and equipment around the world is the core of what we do.

For more than 20 years, Teamwill Consulting has been supporting leading players in banking, consumer finance, and mobility through their strategic and technological transformations. Operating in 11 countries and bringing together more than 800 professionals, the Group combines deep industry expertise, close client relationships, and the ability to deliver on a global scale.

Artificial intelligence is a cornerstone of our growth strategy. To carry that ambition, we are strengthening our technology, engineering, and data teams.

As a Software Engineer at Teamwill Consulting, you design, build, test, and operate production software across the full stack: back end, front end, and the data layer in between. Depending on your assignment, you might be modernizing a large business-critical legacy platform, building a shared internal asset inside the CTAIO function, delivering custom software directly for a client through the Custom Dev practice, or a mix of both. In every case, the standard is the same: clean, well-tested, secure code that someone else can safely change after you.

Design, build, and test backend services and application programming interfaces (API), following an event-driven architecture where appropriate (for example using Kafka).

Design, build, and test front-end applications and user interfaces, leveraging Design Systems so that the branding of your front-end applications is encoded and versioned.

Own your applications end to end up to production. Feel responsible for supporting your users, and for fixing bugs in production and intermediary environments on your applications.

Collaborate with Product Owners, Product Managers, Business Analysts, and Subject Matter Experts so that you eventually own functional requirements: you are accountable to clarify requirements up to the point where you can explain them and there is no clarification required anymore. Own the non-functional requirements for the applications you build: collect them, formalize them, and ensure you design and deliver them.

Build quality in from the start. Write automated tests as a normal routine of writing code (unit tests, integration tests, contract tests, and end-to-end tests, aiming for a high, enforced coverage standard), apply secure coding practices by default (e.g., input validation, dependency and container image scanning, and secret management are part of "done"), and take part in code review, giving and receiving direct feedback on code quality and holding the line on the team’s engineering standards.

Participate in decomposing large, tightly-coupled legacy services into smaller, independently deployable ones, including extracting business logic that has accumulated inside a database over time into well-tested application code.

Stay compliant with the continuous integration / continuous delivery (CI/CD) pipelines the organization defines as the standard for your applications, consistent with Teamwill’s Everything as Code practice: infrastructure, pipelines, and configuration are versioned and reviewable, never hand-applied. Share valuable feedback on platform improvements with the Platform Engineering team.

Where relevant to your assignment, use an artificial intelligence (AI) coding agent (for example Claude Code, Cursor, or OpenCode) through the full workflow: planning a change, executing it, and watching it through deployment, reviewing its output with the same combination of automated checks and human review as anyone else’s code, and maintaining the project’s own standing context documentation for agents. As a principle of our organization: code you ship is yours, agent-assisted or not.

Assignments vary, and this role is intentionally full-stack in substance. Expect various assignments ranging between:

Delivering custom software directly for a client through Teamwill’s Custom Dev practice, on a stack that spans backend, front end, and cloud infrastructure.

Joining a technical remediation and modernization program for a large-scale financial-services platform: decomposing a legacy, database-heavy system into modern, event-driven services.

Building a shared engineering asset used across multiple client engagements, within the CTAIO function.

The work is international: you will collaborate with teams and clients across Teamwill Consulting’s geographies.

Job requirements

Bachelor’s or Mast