Senior Platform Engineer
First seen by Alion on Sep 29, 2026.
About the Role :
We are looking for a Senior Platform Engineer to build and evolve the core of an enterprise internal developer platform (IDP) we are co-creating with a leading UK financial services organisation.
The platform is built on Port.io and gives the client's engineering teams self-service access to golden paths - cloud landing zones, standard images, pipelines and tooling - through a curated catalogue.
You will be the platform's hands-on Port.io specialist in the India team : engineering the data model, catalogue and self-service experiences, and turning the Solution Architect's designs into a working platform that developers genuinely want to use.
This role forms part of the long-term engineering core of the team.
Key Responsibilities :
- Port.io engineering : Build and maintain the platform's Port.io implementation - blueprints and data model, entities, relations, scorecards, self-service actions and RBAC.
- Golden paths : Engineer catalogue items end-to-end : the self-service definition, input validation, the automation it triggers and the feedback developers see.
- Catalogue quality : Implement scorecards, standards checks and catalogue health measures so the platform stays trustworthy as it grows.
- Integrations : Build integrations that keep the software catalogue accurate - ingestion from GitHub, cloud platforms, CMDB and observability tooling.
- Contribution model : Engineer the workflows through which other engineering teams contribute capabilities to the catalogue, including approval and quality gates.
- Developer experience : Measure and improve adoption : self-service success rates, time-to-consume and developer feedback loops.
- Standards and mentoring : Uphold engineering standards through review and documentation; mentor mid-level engineers across the distributed team.
Required Experience :
- 6+ years : in platform, DevOps or software engineering, of which 2+ years working on internal developer platforms or developer experience tooling.
- Developer portal experience : Hands-on experience building on Port.io or a comparable portal (Backstage, Humanitec) - data models, catalogues and self-service actions.
- Direct Port.io experience is strongly preferred.
- API-first engineering : Strong experience building against REST APIs and webhooks; solid scripting/development in TypeScript/Node.js or Python.
- CI/CD and IaC context : Good working knowledge of GitHub Actions and Terraform - enough to design catalogue items that trigger real infrastructure automation.
- Product mindset : Track record of treating platforms as products : user feedback, iteration and adoption metrics rather than ticket-driven delivery.
- Distributed collaboration : Experience in sprint-based distributed teams; clear written and spoken English.
Skills
DevOps, REST API, Python, CI/CD, IAC Terraform, Github, CMDB, System Implementation