Software Engineer - Core Banking

Software Engineer - Core Banking at Ageras Danmark

At Ageras, we are redefining how entrepreneurs—freelancers, self‑employed professionals, and SMEs—manage their banking and administrative tasks. Through seamless tools and innovative accounting & banking solutions, we help them focus on what matters most: growing their businesses.

Our vision is to become the best friend of every small entrepreneur across Europe.

Over the years, Ageras has grown through the merging of top European FinTechs like Shine (🇫🇷), Kontist (🇩🇪), Tellow (🇳🇱), and more. Today, we’re a team of nearly 500 people working together from Paris, Amsterdam, Copenhagen, and Berlin.

Our 150 engineers design scalable, reliable, and user‑centric solutions through a modern architecture that drives our growth. Organized into specialized tribes, they collaborate in cross‑functional squads—including an Engineering Manager, a Product Manager, a Product Designer, and Software Engineers—to foster innovation and excellence.

Our structure maximizes impact and ownership:

• Product teams develop core features for key business domains (invoicing, banking, accounting).
• Platform teams manage infrastructure and core services (Cloud, DevOps, Core APIs, developer tools).
• Data team builds data pipelines for engineering, modeling, and analytics.

Within our Banking tribe , the Banking Core team plays a central role. The team builds and maintains the foundational systems that power Ageras’ banking services. It is now expanding to strengthen our core infrastructure for scaling Shine across markets , with a strong focus on building and evolving our card and payment products .

Our stack includes TypeScript, Node.js, React, PubSub, Docker, Terraform, GitHub Actions, and GCP—structured in microservices and event‑driven architectures.

By joining the Banking Core team, you will contribute to shaping the foundation of Ageras’ banking services. Your mission: help design, build, and scale our next‑generation payment systems while ensuring resilience and reliability of our existing core infrastructure.

Your responsibilities will include:

• Building distributed, event‑driven systems that power our payment flows and ledger logic.
• Strengthening and maintaining existing banking core services to ensure performance and stability.
• Writing clean, maintainable, and well‑tested code using best engineering practices (DDD, TDD, clean architecture).
• Collaborating closely with your squad (Engineering Manager, Product Manager, and fellow engineers) and contributing to design and code reviews.
• Participating in architectural discussions and proposing scalable technical solutions.
• Sharing knowledge and mentoring peers—particularly important for our senior engineers.
• Helping improve team rituals, demos, and feedback loops to keep collaboration meaningful in a remote‑first setup.

Job located in Paris (preferred) or Berlin, Amsterdam or Copenhaguen, with possibility of two remote working days per week.

• 5+ years of backend experience in TypeScript/Node.js environments.
• Solid understanding of distributed and event‑driven systems .
• Strong focus on clean code, testing, and maintainability .
• Experience with microservices , Domain‑Driven Design , and cloud environments (GCP or AWS).
• Comfortable working in cross‑functional squads with engineers, product managers, and designers.
• Strong communication skills and curiosity for the product and customer experience.
• Experience in banking, payments, or regulated environments is a plus.
• Fluent in English; French is a strong advantage.

1️⃣ Initial conversation with Edouard (Engineering Manager), to understand your background, motivation, and expectations.

2️⃣ Technical interview with engineers from the Banking Core squad : a deep dive into coding standards, architecture, and collaboration.

3️⃣ System design case : a hands‑on exercise (build or debug a payment service) that you’ll later discuss with the team.

4️⃣ A finale conversation to discuss about your soft skills and meet you’re future colleagues, and a stakeholder round with Thomas (VP Engineering) or Sebastian (VP Product Banking) to explore product mindset and cross‑team collaboration.