At a Glance
- Tasks: Own and operate a multi-account AWS estate, build CI/CD pipelines, and enhance observability products.
- Company: Cloud Gateway, a leading UK managed network security provider.
- Benefits: Competitive salary, hybrid work model, and opportunities for professional growth.
- Other info: Join a small, dynamic team where your contributions are valued and visible.
- Why this job: Make a real impact supporting critical government services with cutting-edge technology.
- Qualifications: Strong AWS and Terraform experience, plus skills in CI/CD and Docker.
The predicted salary is between 63000 - 77000 £ per year.
Location: London (hybrid)
Contract: Permanent, full-time
About Cloud Gateway
Cloud Gateway is a UK-based managed network security provider delivering secure connectivity and network services to government and enterprise clients. We operate in a regulated, security-first environment where reliability is non-negotiable.
About the Role
We're looking for a Senior Platform Engineer to join our small but impactful platform team. You'll own and operate a multi-account AWS estate supporting critical government services, build and maintain CI/CD pipelines, and contribute to our growing observability and network automation products. This is a hands-on role with real ownership. You won't be pushing tickets around a queue; you'll be designing infrastructure, writing code, responding to incidents, and shipping improvements to production. You'll work closely with our NetOps, ServiceDesk, and engineering teams to keep things running and make them better.
What You'll Be Doing
- Managing and evolving a multi-account AWS organisation with Terraform-managed resources across production and development environments.
- Building, maintaining, and optimising CI/CD pipelines for infrastructure deployments, application releases, Docker image builds, and database migrations.
- Operating and improving our observability stack (Grafana, InfluxDB, Prometheus, OpenTelemetry, CloudWatch) monitoring 200+ network devices and all AWS infrastructure.
- Supporting and developing our Observability-as-a-Service product built on ClickHouse Cloud, HyperDX, and OpenTelemetry, including customer onboarding and tenant management.
- Participating in on-call rotation, responding to production incidents, writing postmortem reports, and driving reliability improvements.
- Contributing to security and compliance initiatives including Cyber Essentials Plus certification, IAM governance, and vulnerability management.
- Building and maintaining golden AMI pipelines with automated patching, CIS hardening, and vulnerability scanning.
- Supporting the Network Automation Platform initiative, integrating with FortiGate, Juniper, and NetBox for automated device configuration management.
- Maintaining and supporting legacy infrastructure across established accounts, including investigating issues in systems, understanding how they were built, and planning gradual modernisation where appropriate.
What We're Looking For
- Strong hands-on experience with AWS (EC2, ECS, Lambda, RDS, VPC, IAM, CloudWatch, API Gateway, S3, Route53).
- Solid Terraform experience.
- Experience with CI/CD pipelines.
- Docker experience.
- Linux administration and troubleshooting.
- Experience with monitoring and observability tools.
- Scripting ability in at least one of TypeScript, Python, or Bash.
- A security-conscious mindset.
- Comfortable with on-call responsibilities and incident response.
- Comfortable working with legacy infrastructure and services.
- Experience with network automation tools (Ansible, NAPALM, Scrapli, NETCONF).
- Familiarity with ClickHouse, OpenTelemetry, or time-series data platforms.
- Experience working with government clients or in regulated environments.
- Exposure to FinOps practices and cost optimisation.
- AWS certifications (Solutions Architect Associate or similar).
What We Offer
- The chance to own a platform end-to-end, not just a slice of it.
- Real impact, the services you support help millions of people across the UK.
- A small team where your contributions are visible and valued.
- Exposure to a wide range of technologies across infrastructure, serverless, observability, and network automation.
- A growing product engineering function with opportunities to shape the direction of new initiatives.
Senior Platform Engineer in London employer: Cloud Gateway
Cloud Gateway is an exceptional employer, offering a dynamic work environment in London where you can truly make an impact. As a Senior Platform Engineer, you'll enjoy the benefits of a hybrid working model, a strong focus on employee growth through exposure to cutting-edge technologies, and the opportunity to contribute to critical government services that benefit millions. Our collaborative culture values your contributions, ensuring that your work is recognised and appreciated within a small, dedicated team.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Platform Engineer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Cloud Gateway or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Cloud Gateway.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Cloud Gateway.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Cloud Gateway that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Platform Engineer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Cloud Gateway.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Cloud Gateway and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Cloud Gateway
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Cloud Gateway uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
