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# Senior Golang Engineer

- **Company:** Checkout.com
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Continuous Integration, Machine Learning, Routing, Software Architecture, Delivery Pipeline, Grpc, Golang, Microservices
- **Published:** July 31, 2026
- **Apply:** https://uk.indeed.com/viewjob?jk=e7328b5aa1dfbcf0

## About the Role

* Expert level experience with Golang
 * Enthusiastic about delivery and experience working in a fast-paced environment
 * Ability to adapt to new technologies quickly and understand the stakes in doing this
 * Experience in designing and managing large, scalable, high throughput, and highly available systems
 * Experience with AWS and its basic best-practice architectures
 * Strong understanding and appreciation for software design and architecture
 * Strong experience with microservice-based infrastructures
 * Solid understanding of HTTP and GRPC
 * Desire to work on an exciting product suite, within a fast scaling technical business
 * Excellent practical knowledge of commonly used patterns in Golang
 * Experience with Continuous Integration and Deployment workflows
 * Excellent communication skills, ability to interact optimally with multidisciplinary teams

## Description

This role sits in our Payment Performance team - Payment performance means that we work to make payments have a higher probability of succeeding when they come through us - thus ensuring higher revenues to all of our merchants. We do this by combining ML/RL and manual knowledge to make routing algorithms that modify a payment's parameters in real-time. This makes for an exciting technical challenge: we have to combine high performance (<100ms), reliability (99.99%), and live machine learning, which requires us to be ahead of the market in terms of technology.

How you'll make an impact

 * Drive and support our software and infrastructure engineers working on proprietary algorithms
 * Uphold high standards for our uptime and latency requirements while not sacrificing veracity of API responses
 * Work with data scientists to make modifications to the platform and algorithms in order to achieve even better results
 * Assist in hiring and developing like-minded engineers on the team
 * Participate towards maintaining the team's cohesion and healthiness
 * Handle our incident response and post-incident investigation processes; participate in on-call rotations
 * Make difficult choices in planning for the long term vision of our infrastructure and its quality while not overengineering.
 * Maintain high quality standards and best practices for code, infrastructure and documentation
 * Support the creation and maintenance of technical documentation
 * Contribute to designing, developing, and delivering new features for our products


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