Full Stack Engineer

Evantis Consulting; Greater London; On-site; GBP 75,000 - 110,000; Full time

Job summary

Evantis Consulting is seeking a skilled backend engineer to design and implement schema-driven APIs and UIs in a modern cloud environment. The role focuses on configuring API gateways, managing routes, and ensuring reliable deployments through GitOps practices.

You will work with Kong, Envoy, and Akamai/CloudFront, writing code and configurations directly to deliver scalable, contract-driven services across our platform.

Qualifications

• Proficiency in Python, Golang or Java for backend services.
• Experience building schema-driven UIs and services from OpenAPI/JSON Schema.
• Professional experience configuring API gateways (Kong, Envoy, Akamai/CloudFront) including routes, services, upstreams, plugins.
• Hands-on GitOps-based delivery with intent → PR → merge → reconcile, plus automated rollback on failure.
• Comfort with CLI-driven and code-editor workflows for gateway onboarding and config-as-code.

Skills

Backend engineering

Schema-driven experiences

API gateway configuration

GitOps model

CLI & code-editor tooling

Tools

Kong API Gateway

Envoy Proxy

Akamai/CloudFront

Job description

Required qualifications, capabilities, and skills

• Backend engineering: Proficiency in one or more backend languages Python, Golang, or Java.
• Schema-driven experiences: Experience building dynamic, schema-driven UIs and services from structured contracts such as the OpenAPI Specification (OAS) or JSON Schema.
• API gateway configuration: Professional experience configuring API gateways - Kong, Envoy, Akamai/CloudFront including routes, services, upstreams, and plugins.
• GitOps model: Hands-on experience with GitOps-based delivery - author intent → PR → validate → merge → reconcile — with automated rollback on failure.
• CLI & code-editor tooling: Comfort with CLI-driven and code-editor–based workflows for gateway onboarding - authoring, validating, and committing configuration directly as code.

Preferred qualifications, capabilities, and skills

• Kong: Deep, hands-on experience with Kong API Gateway (plugins, consumers, upstreams, schema validation).
• Envoy: Hands-on experience with Envoy Proxy or Envoy Gateway (routes, filters, and configuration).
• Akamai / CloudFront: Familiarity with edge configuration (CDN, WAF, GTM, certificates, property versioning/activation).
• Config reconciliation & drift: Experience building drift detection and desired-state reconciliation between Git and live systems.