Senior Backend Engineer
Summary
Senior Backend Engineer building and operating scalable backend services that power Voice AI products for the telecoms industry, integrating ML pipelines with the backend core. Core stack: Go and Python on Kubernetes, with Postgres, Redis, NATS, Istio, ArgoCD, Prometheus, Grafana, AWS and Terraform. Hybrid role, three days per week in the London office.
Salary: £59,000 - 99,000 per year
Requirements:
- Experience building and operating scalable production systems
- Experience with Go and Python, alongside as many areas of the tech stack as possible, plus a willingness to learn
- High level of ownership and comfort picking up undefined problems and driving them to completion in a small team
- Desirable: experience with real-time or latency-sensitive systems such as streaming, telephony/SIP/WebRTC, or similar
Responsibilities:
- Work closely with ML and AI engineers to integrate Voice AI solutions and ML pipelines with our backend core
- Build next-generation Voice AI products used in real-world, carrier-scale environments
- Contribute to cutting-edge challenges in Speech AI, Conversational AI, and AI safety
- Take high ownership, autonomy, and direct impact on product and company strategy
Technologies:
- AI
- AWS
- ArgoCD
- Backend
- Grafana
- Istio
- Kubernetes
- NATS
- Prometheus
- Python
- Redis
- Terraform
- Cloud
More:
We are a fast-growth tech company applying AI to the telecoms industry and hiring a Senior Backend Engineer to join our growing team. Our tech stack includes Go, Python, Postgres, Redis, NATS, Keycloak, Kubernetes, Istio, mTLS, ArgoCD, Prometheus, Grafana, AWS, and Terraform. This is a hybrid role based in our London office, with three days per week onsite.
last updated 37 week of 2026
