Senior Software Engineer - API & Connectors

A pioneer and market leader in Embedded Banking, we are committed to supporting financial players in designing services and payment experiences that users love.

Our cutting-edge, end-to-end platform empowers leading financial services companies to access accurate financial data from multiple sources. Our products allow you to automate processes, improve risk management, make and receive payments, shorten decision-making times, and enrich customer journeys.

We are a trusted partner to the top financial industry players and software editors in Europe, and we have achieved this by scouting the best talents. Joining us means being part of an inclusive, multicultural, and international team.

As a Senior Software Engineer, you will join our Cross-Connectors squad, which is responsible for building and maintaining the core APIs and connectors that aggregate financial data from a wide range of financial institutions. You will play a critical role in designing robust backend systems, ensuring scalability, performance, and reliability across our data aggregation platform.

What will be your responsibilities?

- Design, implement, and maintain APIs and secure connectors to financial institutions, enabling high-quality data aggregation and processing.

- Develop robust, scalable backend services using Python and/or Go, following modern software engineering best practices.

- Work closely with the product team to understand client needs and translate them into technical solutions that drive business value.

- Collaborate with the DevOps and infrastructure teams to deploy, monitor, and troubleshoot production systems.

- Ensure high standards of code quality, security, performance, and observability across all projects.

- Contribute to architectural discussions and continuously improve our engineering practices and development workflows.

- Take ownership of features and services, from design through deployment and support in production.

What do we expect from you?

- Solid experience in backend development, with proficiency in Python.

- Strong understanding of software engineering principles, clean architecture, and design patterns.

- Proven experience in designing and maintaining APIs and integrating with third-party services.

- Good knowledge of relational databases and some exposure to NoSQL solutions. You should be comfortable writing efficient queries, understanding indexing, and using ORMs like SQLAlchemy (Python) in a production environment.

- Experience working with cloud platforms, particularly AWS (e.g., Lambda, S3, IAM, EC2, etc.).

- Good understanding and hands-on experience with observability tools (logging, metrics, alerting).

- Comfortable working in a collaborative team environment with CI/CD practices and agile methodologies.

- Excellent problem-solving skills, with a pragmatic mindset and the ability to make trade-offs in real-world scenarios.

What makes you stand out?

- Experience with financial data, banking APIs, or open banking protocols (e.g., PSD2).

- Experience building API services in Golang.

- Proficiency with, and an eagerness to leverage, AI technologies.

- Exposure to infrastructure-as-code and DevOps tooling (Terraform, Docker, Kubernetes).

- Familiarity with security best practices in API development and data handling.

Why join Powens?

Impact: Your work will directly shape the backbone of how financial data is accessed and delivered to clients.

Growth: Work with cutting-edge technologies in a rapidly evolving domain with a team that encourages learning and innovation.

Culture: Join a people-first company that values trust, transparency, and ownership.

At Powens, we are redefining how financial services work from the inside out. If you’re ready to build s