Platform Engineer

Hybrid (2 days per week in Tower Bridge HQ) or Fully Remote (UK only) Alto Software Group is a B2B SaaS company that powers more than half of all UK housing transactions each year. We create software solutions that connect businesses and consumers, delivering a one‑stop shop for estate agents and home builders. Our goal is to drive efficiency, speed up transactions, reduce risk, and improve the end‑customer experience. While we're not a startup, we operate with a startup mindset. We're looking for people who share this mentality and are ready to tackle big ambitions. This is a fast‑growing and exciting business going through significant change, and there's never been a better time to join us. We're looking for an experienced Platform Engineer to join the Alto Team. As a Platform Engineer at ASG, you will be from a software engineering or infrastructure background and be passionate about building a secure and reliable internal platform to aid developers in building fault‑tolerant, scalable and stable applications in collaboration with cross functional development teams. You will be passionate about developer experience and productivity and have a strong understanding of how to design tools and abstractions through an ‘as a service' model that enable developers to focus on problem solving and not battling with infrastructure. What You’ll Do Support the development teams in their use of AWS services through infrastructure‑as‑code Improve developer experience and productivity through scaffolding, templates & tooling Evolve our infrastructure practices and cloud architecture, keeping up with industry trends and emerging technologies Ensure non‑functional requirements such as resilience and scalability are maintained across our services Build and maintain developer workflows and platforms to enable continuous testing/integration/delivery Maintain an observability stack that allows us to reactively and proactively monitor our systems Implement service cataloging and service scorecards through a managed internal developer platform Our Technology Stack We believe in using the right tool for the job. Our current stack includes: Backend: C#/.NET, TypeScript, Node.js, Apollo GraphQL, MongoDB, SQL Server Frontend: TypeScript, React Cloud & Infrastructure: AWS (ECS, EC2, S3, Cloudfront, DocumentDB, DynamoDB, Lambda), Terraform, Github Actions, Octopus Deploy Observability: Datadog, Cloudwatch Architecture: Service orientated architecture, Micro‑Frontends, Event‑driven architecture, .NET MVC Who We’re Looking For Hands‑on experience with AWS (essential), along with solid experience in designing and implementing distributed, cloud‑native systems aligned to the AWS well‑architected framework Strong proficiency in an infrastructure‑as‑code framework (Terraform is our tool of choice) Knowledge of observability patterns and tools Spent time using scripting languages for bootstrapping and maintaining systems Experience migrating from Windows to Linux environments (our core stack is .Net framework) In depth knowledge of different legacy migration/system design patterns Practical experience in CI/CD platforms (such as GitHub Actions, Octopus Deploy) An understanding of IDPs (internal developer platforms) Helped implement continuous/automated testing processes Excellent cross‑functional and cross‑team communication and collaboration skills Don’t worry if you don’t check every box We’re looking for passionate engineers who are excited to grow. If you have a solid foundation in platform engineering and/or DevOps/SRE and are eager to learn, we encourage you to apply. We are committed to building a diverse and inclusive team and welcome applications from all backgrounds. Benefits Everyday Flex – greater flexibility over where and when you work 25 days annual leave + extra days for years of service Day off for volunteering & Digital detox day Festive Closure – business closed for period between Christmas and New Year Cycle to work and electric car schemes Free Calm App membership Enhanced Parental leave Fertility Treatment Financial Support Group Income Protection and private medical insurance Gym on‑site in London 7.5% pension contribution by the company Discretionary annual bonus up to 10% of base salary Talent referral bonus up to £5K We want to make ASG more welcoming, fair and representative every day. We’ll consider everyone who applies for this role in the same way, regardless of your ethnicity, colour, national origin, religion, sexual orientation, gender, gender identity, age, physical disability, neurodiversity status, family or parental status, or how long you’ve spent unemployed. #J-18808-Ljbffr