4024 IT & Software Developer jobs in the UK
Senior Platform Engineer
£70,000 - 95,000 ❖
Collect Solutions Ltd
71-75 Shelton Street, London
£70,000 - 95,000 ❖
Requirements
Must:
- 5+ years of experience in a platform engineering, DevOps, or backend-heavy full-stack role, with meaningful time spent running production SaaS systems.
- Strong Azure experience: resource management, networking, identity (Entra ID), and at least working familiarity with AKS or App Service, Azure Functions, Service Bus, and Azure Monitor.
- Solid Infrastructure as Code practice (Terraform preferred; Bicep acceptable).
- Experience building and maintaining CI/CD pipelines in a team environment (GitHub Actions or Azure DevOps).
- Competence in at least one backend language (Python strongly preferred; Go, C#, or TypeScript also valuable).
- Experience with containers (Docker, Kubernetes or equivalent) and modern deployment patterns (blue-green, canary, feature flags).
- Production experience with monitoring, logging, and alerting systems, and a track record of responding to incidents methodically.
- Clear written and verbal communication; ability to explain trade-offs to non-technical founders.
- Ability to support and nurture early customers through specification and accreditation for accounting application and AI/ML development from pilot to commercialisation.
Strongly preferred:
- Experience in fintech, payments, or financial services.
- Familiarity with LLM/AI production operations: model versioning, evaluation pipelines, cost management, safe rollout patterns.
- Experience with third-party API integrations at scale, including handling real-world failure modes (rate limits, partial failures, webhook reliability).
- Exposure to multi-tenant SaaS architecture and its operational considerations.
- Experience working in small teams or early-stage companies where you wore multiple hats and owned outcomes.
Nice to have:
Azure certificationsResponsibilities
Platform and Infrastructure
- Own the Azure production environment end-to-end: resource provisioning, networking, identity and access management, secrets, backups, and cost management.
- Build and maintain CI/CD pipelines (GitHub Actions or Azure DevOps): predictable releases, safe rollbacks, environment promotion (dev/staging/prod), and clean configuration management.
- Establish and maintain Infrastructure as Code (Terraform or Bicep) so environments are reproducible and auditable.
- Set up observability: structured logging, metrics, dashboards (Azure Monitor / Grafana), alerting, and runbooks for fast diagnosis and recovery.
- Define and track availability and reliability targets; drive post-incident review and preventative improvements.
Application Development
- Contribute to backend development: API endpoints, service logic, database schema, and integration code.
- Design and implement integration patterns for third-party payment providers and accounting systems (priority: Xero), and webhooks with retry logic, idempotency, and reconciliation.
- Build and operate async processing infrastructure: queues, workers, schedulers, with reliability patterns (dead-letter queues, safe reprocessing, backpressure).
AI/ML Operations Support
- Partner with the ML engineer on production deployment of AI/ML models and agentic workflows: containerisation, versioning, controlled rollouts, and regression testing.
- Implement operational controls for LLM usage in production: rate limiting, cost monitoring, caching, audit trails, and safe fallback behaviour.
- Support evaluation and testing infrastructure for ML components alongside the ML engineer.
Security and Compliance Foundations
- Implement security fundamentals for a payments platform: encryption at rest and in transit, least-privilege access, dependency scanning, and secure secret management.
- Establish audit trail and logging patterns to support future compliance requirements (including ISO accreditations).
- Participate in on-call as the platform scales; share responsibility for production availability.
Team and Process
- Work in short iterative cycles (sprints) with the CTO and ML engineer; participate in planning, estimation, and retrospectives.
- Communicate directly with founders on technical status, trade-offs, and priorities; translate engineering decisions into business terms.
- Write documentation: architecture decisions, runbooks, onboarding guides.
- Evaluate build-vs-buy decisions for tooling and infrastructure components alongside the CTO.
Methodology
Description
- Collect Solutions Ltd – Confidential - Senior Platform Engineer — Collect Solutions - Location: London / Hybrid - Working style: Remote-first with periodic in-person working sessions - Reports to: CTO (fractional; Prof Gregory Wheeler, Martingale GmbH) - Works with: Principal AI/ML Engineer (Zifan); CTO; Founders - Start date: March 2026 - Probation: 3 months - Role type: Full-time, permanent - Salary & Benefits: £70-95k, Bonus, Equity, Other benefits About the role - Collect Solutions is a lean, funded, AI-powered company building software solutions to help businesses collect payments faster and more intelligently. Products combine agentic AI workflows with payment system integrations to automate collection processes that are currently manual, slow, and error-prone. - The company needs a senior engineer to become the day-to-day technical anchor of the platform—someone with strong Azure expertise who owns the production system end-to-end, can build features as well as infrastructure, and brings the operational discipline to run a financial services application reliably. - This is not a pure DevOps role. Significant time will be spent on platform engineering, CI/CD, and infrastructure, but the role also contributes to application development, API design, and integration work. The company seeks a generalist who leans platform, not an infrastructure specialist who only touches pipelines. What this role is not - A management role (no team to manage yet). - A pure infrastructure role limited to Terraform and pipelines. - The role will involve writing application code, debugging production issues (including occasionally at 2am), and contributing opinions about product decisions because of technical constraints. Why this role matters - You will be the engineering anchor of a growing platform, making the production system real, keeping it running, and building the engineering foundation for future growth. As the company grows, you will have shaped the platform, practices, and culture from the ground up. Equal opportunities - Collect Solutions is an equal opportunity employer. The company values diverse perspectives and is committed to creating an inclusive environment for all.
Benefits
35-hour work week4 weeks (20 days) vacationCareer paths and annual reviewsEquity or company stockHybrid workFlexible work timeHome office / Remote 2 days per weekSomething wrong or incorrect with this job? Tell us in the chat 💬 on the right ➡️
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Collect Solutions Ltd, Arctic Shores, SwapTix, Bestway Group, HM Land Registry, Companies House, FCDO Services among others, are currently hiring for DevOps roles in the UK.
The company with most openings is Experis as they are hiring for 110 different DevOps jobs in the UK. They are probably quite committed to find good DevOps.
The company with most openings is Experis as they are hiring for 110 different DevOps jobs in the UK. They are probably quite committed to find good DevOps.