About this role
We are looking for a Senior Backend Engineer to join the Core Banking Services team and help build and scale a high-performance Banking-as-a-Service (BaaS) platform. We build and scale the high-performance, serverless API layer that empowers both internal consumers and partner banks to manage customers and their accounts.
As a pure backend engineering team, we don't build UI components. Instead, we focus entirely on engineering robust, highly available, and secure distributed services. The team owns the end-to-end lifecycle of core banking entities, including:
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Identity & Compliance: Automated customer onboarding and complex KYC workflows.
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Ledger & Accounts: Scalable deposit account management systems.
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Reporting: High-throughput data processing for reporting obligations, observability, and account statement generation.
Responsibilities
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Build and maintain the BaaS API services, including REST API and event-driven systems with a serverless architecture that other teams and partners depend on, making sure they're reliable and accurate.
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Help shape how we solve problems: contribute ideas on how things should be built, weigh in on important decisions, and make sure we're building things the right way for the long term.
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Keep our CI/CD processes healthy: spot when things are slow or breaking, and take action to make the team's day-to-day smoother and faster.
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Drive architectural decisions and solution design within your domain, including writing technical solution designs, participating in threat modeling workshops, and collaborating cross-team on upstream/downstream dependencies.
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Take ownership of production reliability by participating in an On-Call rotation, leading incident investigations, identifying root causes, and driving hotfixes, as the team does with live incidents on the platform.
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Work with external partners and services we connect to, and take ownership when something on their side needs following up or resolving.
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Keep our build, testing, and release processes healthy: spot when things are slow or breaking, and take action to make the team's day-to-day smoother and faster.
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Must have:
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Minimum 5 years of hands-on experience as a backend engineer, with at least 2 years of NodeJs/TypeScript experience.
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Highly responsible for working with critical high-core value systems for the company.
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Solid experience with AWS Serverless services - Lambda, SQS, API Gateway, EventBridge, DynamoDB, S3.
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Solid understanding and practical application of design patterns
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Hands-on experience with Infrastructure as Code (preferably Terraform & CDK).
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Hands-on experience with TypeScript testing practices (unit, integration, system testing).
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Experience with event-driven architectures (e.g., Kafka)
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Familiarity with RESTful API design and OpenAPI specifications.
Soft skills:
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Excellent communication skills. Ability to articulate challenges and solutions clearly.
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Proven team player. Collaborates well with others and supports shared goals.
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Critical thinking and problem-solving capabilities; able to design robust solutions and analyze production issues.
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Proactiveness in supporting teammates and driving technical improvements.
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Fluency in English.
Good to have:
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Experience working in a monorepo setup (pnpm workspaces or similar).
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Experience with Relational Databases (MySQL) and an ORM such as Prisma.
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Experience with NoSQL databases (e.g., DynamoDB or similar)
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German-language skills are a plus but not mandatory.
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We offer:*
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Flexible working format - remote, office-based or flexible
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A competitive salary and good compensation package
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Personalized career growth
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Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
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Active tech communities with regular knowledge sharing
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Education reimbursement
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Memorable anniversary presents
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Corporate events and team buildings
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Other location-specific benefits
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*not applicable for freelancers