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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Platform Engineer - **Company:** Cogna - **Location:** Greater London, UK - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Airflow, Microsoft Azure, Cloud Computing, Cloud Engineering, Compilers, Continuous Integration, Data Structures, Distributed Systems, Identity and Access Management, Python (Programming Language), Key Management, PostgreSQL, Network Configuration and Change Management, Performance Tuning, Role-Based Access Control, Software Engineering, TypeScript, Datadog, Data Logging, Pulumi, Cloud Platform System, Kubernetes, Terraform - **Published:** September 10, 2026 - **Apply:** https://www.collegerecruiter.com/job/2833343474-platform-engineer ## About the Role * Proficient in writing maintainable, testable, and scalable code in real-world, production environments. Language fluency in Python, Typescript, or Go is a plus, but strong engineers with deep experience in comparable languages are welcome. * Strong foundational software engineering skills: Solid grasp of computer science fundamentals such as data structures, concurrency, time/space complexity and performance. * Systems-level thinking: Able to reason about distributed systems under failure, scale, and load and design resilient abstractions accordingly. Familiar with networks, operating systems, compilers, storage systems, or distributed services. * Infrastructure as Code and automation: Experience with tools like Terraform, Pulumi, or equivalent for managing cloud-native infrastructure declaratively and repeatably. * Deep operational experience with PostgreSQL in production - including performance tuning, schema evolution, multi-tenant design, and reliability under load. * Security-first mindset: Deep appreciation for secure-by-default design. Familiar with principles like least privilege, secrets management, threat modeling, and how to embed security controls into infrastructure and CI/CD pipelines. * Cross-functional collaboration: Comfortable partnering with other engineers, product managers, sales, marketing, IT and support to define and implement platform capabilities that meet shared goals. * AI assisted development: Excited about using AI-assisted development tools and interested in integrating AI into engineering workflows and platform capabilities. ## Description We're hiring a Platform Engineer to help design, build, and maintain the foundation our teams rely on every day. You'll join our Platform team, which supports security, core infrastructure, and DevX across Cogna. Your focus will be shaping the internal platform and cloud architecture that powers all engineering teams and underpins our product. We treat the platform as an internal product: defining APIs, abstractions, and guardrails that let teams ship quickly and safely. This role is ideal for someone who thrives on solving platform-wide challenges, enjoys working cross-functionally, and is passionate about clean, resilient cloud infrastructure., * Design and evolve our cloud infrastructure and internal platform (primarily Azure/Kubernetes-based), including service-to-service communication and workflow orchestration layers (e.g. gRPC, Temporal, Dagster) that power product delivery. * Make architectural decisions that shape how Cogna builds and operates software * Work within and contribute to our Go/Python/TypeScript codebase. * Own and evolve our build, infrastructure-as-code, and delivery systems (e.g. Bazel, Terraform, CI/CD), optimising for scalability, hermeticity, and developer velocity. * Implement and own security controls, identity and access management systems, and network configuration policies across our Kubernetes environments. * Improve and drive observability by implementing logging, tracing, and alerting systems (e.g. Datadog). * Partner with internal teams to improve resilience, automate toil, and reduce lead time to deployment. * Drive root cause analysis and reliability improvements from incidents. ## Related Videos - [Why segmenting your infrastructure into tiers makes your infrastructure design better](https://www.wearedevelopers.com/videos/1960-why-segmenting-your-infrastructure-into-tiers-makes-your-infrastructure-design-better) - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [Debugging in the Dark](https://www.wearedevelopers.com/videos/1658-debugging-in-the-dark) - [Platform Engineering vs. DevOps Why not both?](https://www.wearedevelopers.com/videos/885-platform-engineering-vs-devops-why-not-both) - [Unleashing Potential Across Teams: The Power of Infrastructure as Code](https://www.wearedevelopers.com/videos/930-unleashing-potential-across-teams-the-power-of-infrastructure-as-code) - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) ## Related Articles - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [The Best X (Twitter) Accounts for Developers](https://www.wearedevelopers.com/magazine/294-the-best-x-twitter-accounts-for-developers) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [What is Software Engineering in the Age of AI?](https://www.wearedevelopers.com/magazine/640-what-is-software-engineering-in-the-age-of-ai) - [7 Cloud Computing Trends Coming in 2025 for Developers](https://www.wearedevelopers.com/magazine/412-7-cloud-computing-trends-coming-in-2025-for-developers) - [What is Agentic Programming and Why Should Developers Care?](https://www.wearedevelopers.com/magazine/625-what-is-agentic-programming-and-why-should-developers-care)