Senior Backend Engineer, Client Integrations & APIs

Kalepa; York and North Yorkshire; On-site; GBP 70,000 - 90,000; Full time

Job summary

Kalepa is seeking smart engineers to design and build scalable, external-facing APIs and integrations. You will work on the client integrations team, translating product requirements into reliable logic and improving performance across databases and services.

You will collaborate with a global team of engineers to deliver faster, more stable backend solutions while taking ownership and driving projects to completion with minimal oversight.

Qualifications

• 5+ years of software engineering experience, ideally with API design or external integrations.
• Strong fundamentals in system design, debugging and problem solving.
• Experience with serverless technologies and cloud environments.
• Bonus: experience with LLMs or generative AI and distributed systems.
• Proactive communication and ownership of delivery.

Responsibilities

• Design and build external-facing API endpoints powering customer workflows.
• Improve database and query performance for scalable backends.
• Integrate with a wide range of third-party services.
• Translate requirements into reliable business logic and solutions.
• Diagnose issues and contribute to a faster, more stable platform.
• Collaborate with a global team of engineers to scale backend systems.

Skills

System design

Debugging

Problem solving

Ownership

Python

Cloud environments

Asynchronous workflows

Relational databases

PostgreSQL

Communication

Tools

AWS Lambda

EC2

Serverless

LLMs / Generative AI

Job description

Kalepa is seeking smart engineers to design and build scalable, external-facing APIs and integrations. You will work on the client integrations team, translating product requirements into reliable logic and improving performance across databases and services.

You will collaborate with a global team of engineers to deliver faster, more stable backend solutions while taking ownership and driving projects to completion with minimal oversight.