Platform Engineer

Location: Bermondsey, London (Hybrid) Salary: Depending on experience (£60000-£70000) + Bonus+ Benefits Years Experience: 5 years in relevant experience Job Type: Permanent, Full-Time Working Pattern: Monday to Friday Start Date: ASAP About Sinara Sinara is a well-established software house based in London, offering software development services and products to exchanges, financial institutions, and market data vendors. We provide robust technical expertise and adopt a pragmatic, flexible approach to delivering and supporting business-critical IT systems. Engineering and technology is at the heart of everything we do, and we're looking for a Platform Engineer to join our Technology Operations team and help us build, maintain, and improve the cloud platforms that support our applications and customers. You will become part of a close-knit Tech Ops team of 13 professionals spanning Infrastructure, Application Support, and DevOps. This is an excellent opportunity to take ownership of cloud-hosted applications, modern container platforms, and automation initiatives while working closely with developers and operational teams. The Role As a Platform Engineer, you will be responsible for the management, reliability, performance, and continuous improvement of our Kubernetes infrastructure. You'll play a key role in operating and enhancing our Kubernetes environments, containerised workloads, CI/CD pipelines, and cloud infrastructure. This is a hands-on role suited to someone who enjoys solving complex technical challenges, improving platform resilience, and enabling development teams to deliver software efficiently and securely. Key Responsibilities Architecting and maintaining internal developer platforms.Manage and support production and non-production environments hosted in AWS.Operate, maintain, and optimise Kubernetes clusters and containerised applications.Monitor platform health, performance, availability, and capacity.Investigate and resolve platform, infrastructure, and application-related incidents.Work closely with Development, DevOps, and Application Support teams to improve system reliability and deployment processes.Collaborating with developers work closely with software engineers and operations teams to understand business requirements and translate into technical solutionsDevelop and maintain Infrastructure as Code (IaC).Support and improve CI/CD pipelines and release automation processes.Implement and maintain monitoring, alerting, logging, and observability solutions.Drive platform security, vulnerability management, patching, and compliance activities.Participate in technical projects including platform upgrades, migrations, and cloud transformation initiatives.Contribute to disaster recovery, business continuity, and high-availability strategies.Create and maintain technical documentation, standards, and operational procedures.Participate in an on-call rota where required.Make sure that the same security and deployment standards are present across the whole infrastructure.Essential Skills & Experience Strong experience administering and supporting AWS cloud environments.Hands-on experience with Kubernetes in production environments.Strong understanding of container technologies including Docker and Kubernetes.Experience managing cloud-native applications and microservices architectures.Experience with Infrastructure as Code tools such as Terraform or CloudFormation.Knowledge of CI/CD platforms and deployment automation.Experience with monitoring and observability tools such as CloudWatch, Prometheus, Grafana, ELK, or similar.Good understanding of Linux systems administration.Experience troubleshooting complex application and infrastructure issues.Knowledge of networking principles including DNS, load balancing, firewalls, and TLS/SSL.Experience working within DevOps or Site Reliability Engineering practices.Desirable Skills Experience with Amazon EKS.Exposure to GitHub Actions, GitLab CI, Azure DevOps, or Jenkins.Knowledge of security best practices within AWS and Kubernetes.Experience with Helm, ArgoCD, or other GitOps tooling.Familiarity with PostgreSQL, MySQL, or other database technologies.Experience supporting SaaS platforms.AWS certifications such as AWS Solutions Architect or AWS SysOps Administrator.Kubernetes certifications (CKA, CKAD, or similar).What We're Looking For A proactive and pragmatic problem-solver.Strong communication and stakeholder management skills.Someone who enjoys collaborating across infrastructure, support, and development teams.A passion for automation and continuous improvement.The ability to work independently while contributing positively to a team environment. What We Offer Competitive salaryTwo profit-share bonus schemesHybrid office/home working arrangementCentral London location: Bermondsey office, 5 minutes from London Bridge Station.Training and certification support.Opportunity to influence the future direction of our cloud platform.Exposure to modern AWS and Kubernetes technologies.Friendly and collaborative working environment.Other Benefits: Company pension and pension salary sacrifice options Private Healthcare Income Protection Insurance Apply Now To Apply: Either click apply or send your CV, along with a short cover letter (explaining why the job appeals to you) to recruitment@sinara.co.uk with Platform Engineer in the subject line and our recruitment team will be in touch. Sinara is only able to hire people who already possess the right to work in UK and cannot provide employer visa sponsorship. About Sinara: Sinara is a well-established software house based in London, offering software development services and products to exchanges, financial institutions, and market data vendors. We provide robust technical expertise and adopt a pragmatic, flexible approach to delivering and supporting business-critical IT systems. Our location is just south of Tower Bridge in the bustling Bermondsey district, with its excellent transport connections, including quick and easy access to London Bridge. As an equal opportunities’ employer, we invite applications from all suitably qualified individuals, regardless of race, gender, disability, age, religion or belief, sexual orientation, or relationship status.