Senior Backend Engineer - Integrations

The Integrations team is at the heart of this mission, powering seamless data exchange between Choco and wholesalers' ERP systems. We're looking for a Senior Backend Engineer who thrives on solving complex integration challenges, designing robust APIs, and architecting distributed systems at scale. You'll play a key role in shaping our Public API platform, developing integration adapters, and enabling data synchronization for thousands of businesses across Europe and the US., * Design, build, and scale backend systems and Public API endpoints that enable seamless data exchange between Choco and external ERP systems.

• Develop and maintain integration adapters to ensure reliable data conversion and synchronization of catalogs, orders, pricing, and inventory.
• Architect and optimize scalable solutions and automation to improve integration performance, reliability, and time-to-go-live.
• Collaborate cross-functionally with Solution Engineers and Product teams to troubleshoot integration challenges and deliver smooth customer go-lives.
• Monitor, test, and continuously improve system performance, observability, and developer experience through high-quality documentation and agile delivery.

Do you have experience in TypeScript?, * 5+ years of experience as a backend engineer with strong expertise in TypeScript and Node.js.

• Deep understanding of microservices architecture, event-driven systems, and API design principles.
• Proven track record building and maintaining RESTful or GraphQL APIs with a focus on scalability and backward compatibility.
• Hands-on experience with integration patterns, data synchronization, and operating software at scale.
• Strong problem-solving, documentation, and collaboration skills - you take ownership from design to deployment in agile environments.

Nice to Have

• Experience with NestJS or similar modern backend frameworks.
• Background working with ERP systems, integration platforms, or iPaaS solutions.
• Familiarity with n8n or other workflow automation tools.
• Understanding of e-commerce data models (catalogs, orders, inventory) and public API design.
• Hands-on experience with observability tools (e.g., Datadog, New Relic) and awareness of SOC2 compliance best practices.
• Contributions to open-source projects or developer communities.

Our Technology Stack

We operate a modern, high-performance environment built on:

Languages: TypeScript (Node.js)

Frameworks: NestJS, internal libraries for AWS Lambda

Infrastructure: AWS (serverless), EKS (Kubernetes), AWS CDK, Helm

Data: PostgreSQL, DynamoDB

APIs: REST, GraphQL with OAuth 2.0 security

Workflows: n8n for automation and integration orchestration

Choco was founded in 2018 in Berlin. Now, we are a dedicated team of over 200 Chocorians across Europe and the US. We seek hungry and humble individuals who embrace hard work, put our team first, and are committed to building a lasting company. Our mission demands urgency and speed while maintaining a long-term vision. In just five years, Choco has raised $328.5 million and achieved unicorn status in 2022, with a valuation of $1.2 billion. We're supported by some of the world's best investors like Bessemer Venture Partners, Insight Partners, Coatue Management, and LeftLane Capital.