Envoy API Engineer

Mphasis; Glasgow; On-site; GBP 60,000 - 90,000; Full time

Job summary

Mphasis in the United Kingdom seeks a skilled software engineer focused on cloud-native architectures. The role emphasizes hands-on development in Go or Java, plus deep experience with API design and gateway security practices.

You will work with modern DevOps tools and Kubernetes to build scalable services and secure gateways. Candidates should be proficient with OpenAPI, OAuth 2.0, OIDC, JWT validation, and mTLS, alongside comprehensive CI/CD pipelines and Terraform deployments.

Qualifications

• Advanced proficiency in one or more programming languages (Golang or Java).
• Hands-on cloud-native experience.
• Experience with Envoy Proxy or Envoy Gateway.
• Strong understanding of OpenAPI Specification (OAS) for RESTful APIs.
• Hands-on experience implementing authentication and authorization at the gateway (OAuth 2.0, OpenID Connect, JWT, mTLS).
• Expertise across the DevOps toolchain (CI/CD, Kubernetes, Terraform).

Skills

Golang

Java

Tools

CI/CD

Kubernetes

Terraform

Envoy

Job description

Required qualifications, capabilities, and skills

• Programming languages: Advanced proficiency in one or more programming languages — Golang or Java.
• Cloud-native operations: Practical, hands-on cloud-native experience.
• Envoy: Professional experience with Envoy Proxy or Envoy Gateway.
• API design: Strong understanding of the OpenAPI Specification (OAS) for RESTful APIs.
• Authentication & authorization: Hands‑on experience implementing authentication and authorization at the gateway, including OAuth 2.0, OpenID Connect (OIDC), JWT validation, and mutual TLS (mTLS).
• DevOps toolchain: Expertise across the DevOps toolchain, including CI/CD, Kubernetes, and Terraform.