Senior Backend Engineer - Platform

Engineering at Ageras

At Ageras, we’re transforming how entrepreneurs—freelancers, self-employed professionals, and SMEs—manage their banking and administrative tasks. As part of the rapidly evolving FinTech space, we’re tackling one of the industry's most complex challenges: delivering reliable, scalable, and user-centric solutions, all backed by a robust architecture that will fuel our continued growth.

Our engineering teams are organized in a way that allows everyone to maximize their impact and take full ownership of their domain:

• Product teams focus on developing new features within specific business domains (invoicing, banking, expenses).
• Platform teams manage the infrastructure and core services (Cloud, DevOps, Core APIs, developer tools).
• Data team builds data pipelines (Data Engineering, Modeling, Analytics).

We are now looking for a talented Senior Backend Engineer to join one of our Platform squads (IAM & Billing), currently composed of 4 Software Engineers, 1 Engineering Manager, and 1 Product Manager.

Our tech stack includes : Node.js, TypeScript, PHP, SQL, NoSQL, AWS, Docker, EventBridge, CircleCI and GitHub Actions. If you’re passionate about leveraging these tools to help shape the future of FinTech, we’d love to hear from you!

Your Role as a Senior Backend Engineer

As a Senior Backend Engineer at Ageras, you will be responsible for designing, implementing and maintaining scalable, secure, and high-performing access management and billing systems that power our services. Your expertise in backend technologies, clean architecture, and cloud environments will be key in delivering solutions that meet business requirements within a highly regulated sector.

Your responsibilities will include:

• Building and optimizing our platforms focused on user and access management, billing, and ensuring reliability, scalability, and efficiency.
• Contributing to a unified technical architecture and aligning technical domains under a shared vision.
• Writing efficient, reusable code, performing tests, and participating in code reviews to uphold high-quality standards.
• Promoting best development practices such as domain-driven design, clean code, pair programming, and mentoring.
• Collaborating with domain and platform teams to design, develop, and implement efficient applications.
• Maintaining detailed, high-quality internal documentation to support collaboration and knowledge transfer across teams.

  Your profile :

You will be a good fit to join the team if: 

• You have 5+ years of experience in a technical environment similar to ours.
• You’re highly proficient in JavaScript/TypeScript, particularly with Node.js and/or Nest.js.
• You have solid expertise in clean code principles, microservices architecture, and Domain-Driven Design (DDD) for building scalable and maintainable systems.
• You’re familiar with event-driven design principles (event sourcing, CQRS, pub/sub patterns).
• You have hands-on expertise working in Cloud environments like AWS or GCP.
• You have a good understanding of product and design challenges and work effectively with Product Managers and designers.
• Ideally, you’ve worked in highly regulated sectors like banking or insurance and are familiar with user management, access management, and billing systems.
• You’re comfortable working in English and thrive in a collaborative, fast-paced environment.
• You have a keen eye for detail and a commitment to delivering high-quality solutions.

Our recruitment process:

1️⃣ A 30-minute introductory call with Annaïg (Talent Acquisition Specialist) to learn more about each other and share details about Ageras.

2️⃣ A 30-minute discussion with Jacek (Engineering Manager) to talk about your experience and the role we’re offering.

3️⃣ A 45-minute technical interview with members of your future team to assess your skills.

We look forward to hearing how your expertise will help us innovate and grow as we continue to shape the future of FinTech!