Senior Node.js Backend Engineer
Senior backend engineer on a Core Banking Services team building and scaling a serverless Banking-as-a-Service platform (REST APIs and event-driven services for KYC, accounts, and reporting) used by internal teams and partner banks. Core stack: Node.js/TypeScript, AWS serverless (Lambda, SQS, EventBridge, DynamoDB), Terraform/CDK, Kafka.
- Compensation
- Not disclosed
- Location
- Ukraine
- Work setup
- Not specified
- Seniority
- Senior
- Employment
- Not specified
- Experience
- 2+ years
- Category
- Backend
- Posted
Skills
Must have
- Minimum 5 years of hands-on backend engineering experience
- At least 2 years of Node.js/TypeScript experience
- Solid experience with AWS Serverless services: Lambda, SQS, API Gateway, EventBridge, DynamoDB, S3
- Solid understanding and practical application of design patterns
- Hands-on experience with Infrastructure as Code (preferably Terraform & CDK)
- Hands-on experience with TypeScript testing practices (unit, integration, system testing)
- Experience with event-driven architectures (e.g., Kafka)
- Familiarity with RESTful API design and OpenAPI specifications
- Excellent communication skills; ability to articulate challenges and solutions clearly
- Proven team player; collaborates well with others and supports shared goals
- Critical thinking and problem-solving; able to design robust solutions and analyze production issues
- Proactiveness in supporting teammates and driving technical improvements
- Fluency in English
Nice to have
- Experience working in a monorepo setup (pnpm workspaces or similar)
- Experience with Relational Databases (MySQL) and an ORM such as Prisma
- Experience with NoSQL databases (e.g., DynamoDB or similar)
- German-language skills (a plus but not mandatory)
Full description
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:
- Identity & Compliance: Automated customer onboarding and complex KYC workflows.
- Ledger & Accounts: Scalable deposit account management systems.
- Reporting: High-throughput data processing for reporting obligations, observability, and account statement generation.
Responsibilities:
- 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.
- 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.
- 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.
- 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.
- 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.
- Work with external partners and services we connect to, and take ownership when something on their side needs following up or resolving.
- 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.
Must have:
- Minimum 5 years of hands-on experience as a backend engineer, with at least 2 years of NodeJs/TypeScript experience.
- Highly responsible for working with critical high-core value systems for the company.
- Solid experience with AWS Serverless services - Lambda, SQS, API Gateway, EventBridge, DynamoDB, S3.
- Solid understanding and practical application of design patterns