Cloud & DevOps Engineer
6+ years of expertise in AWS, Kubernetes, Terraform, and CI/CD automation. Proven track record of reducing cloud costs by up to 94% while improving Security Hub scores from 34 to 87. Specialising in building scalable, secure, and cost-efficient cloud platforms.
Migrated 30+ applications and services from EKS to the Bosun platform, solving complex challenges across Kubernetes, AWS networking, IAM, DNS, CloudFront, WAF, cross-account connectivity and CI/CD. Helped shape deployment strategies and drove the adoption of a multi-branch approach.
Delivered FinOps-driven savings across three AWS accounts, including production.
Increased scores from 34 to 87 across four accounts by implementing 160+ security improvements and best practices.
Leading management of 100+ CI/CD pipelines across GitHub Actions, Jenkins, and CircleCI with maximum reliability.
Cloud Platform & DevOps Engineer with 6+ years of hands-on experience designing and operating secure, scalable, and cost-efficient AWS platforms. Specialised in EKS, Kubernetes, Terraform, CI/CD automation, and cloud security. Proven success improving cloud reliability, reducing costs by up to 94%, and raising Security Hub scores across multi-account environments. Experienced in building observability stacks, optimising databases, and partnering with engineering, security, and SRE teams to deliver high-performance cloud platforms.
My work ethic is to provide hassle-free and fully automated development and production environments so teams can do their best while keeping them secure and cost-optimised. I quickly address bottlenecks and remove blockages, creating a workplace where people can focus on their product. Termly feedback rated me 9/10 as a colleague.
A track record of delivering infrastructure that scales, saves, and secures.
What I bring to a team and an organisation.
Designing, developing, and deploying modular cloud-based systems. Over the last 5 years at Sainsbury's I created and managed Terraform-coded infrastructure on AWS and Helm and Flux-managed containerised applications on AWS EKS, including monitoring, logging, alerting, and connectivity.
Beyond my day job, I led a Cloud Engineering Community that voluntarily built an open-source learning platform on Google Cloud. It developed my leadership and design skills and gave me the experience of creating something new from scratch.
Reduced cloud costs by more than 16% on average over the last year. Read how I did it.
Identifying, analysing, and resolving infrastructure vulnerabilities and deployment issues in line with company security policies and cloud security best practices.
For example, an app with a frontend, backend, authentication, and database had an authentication issue somewhere between DNS, CloudFront, WAF, OAuth2, Azure Entra ID, and the backend. Understanding every component led to the root cause: a WAF payload limitation.
Reviewing existing systems and recommending improvements. I like tools that show me what I am missing: I found zizmor, which scans GitHub Actions workflows for security issues, and applied all its suggestions across our existing workflows, making them more secure.
I recently automated Confluent Cloud secret rotation: it retrieves and decrypts the secrets, compares them with the current credentials, and when they change renews the HashiCorp Vault and AWS Secrets Manager secrets, without exposing any secret. It also restarts the Kubernetes pods so they pick up the renewed secrets.
Creating and improving CI/CD pipelines, including integration, operations, management, and maintenance. With GitHub Actions, CircleCI, and Jenkins I have created "miracles" (the developers' word) for tedious but necessary jobs.
Building scripts and processes that reduce barriers, decrease friction, and speed up delivery, mostly with Bash and Python. I have yet to see a case where Bash could not do the job.
Collaborating with and providing technical assistance to operations and developer teams on microservices, deployment strategies, cloud architecture, and cloud resources, filling the gap between the two as DevOps intends.
Planning cloud infrastructure capacity, which requires a true understanding of a service's purpose, requirements, expectations, limitations, cost, and business context.
Presenting complex technical infrastructure in a simple, easy-to-understand way, especially for non-technical colleagues and customers.
How I work, and what colleagues say about working with me.
Positive, solution-oriented, self-motivated, disciplined, and organised, and I thrive in a fast-paced environment. I coordinate the migration of 32 production apps and services to a new platform with 3 developer teams involved. Besides coordination and meeting deadlines, I do the automation and production deployments, resolve infrastructure issues, hand application issues to developers, and coordinate other teams when needed.
Naturally resilient and tenacious, with excellent communication and influencing skills. Comfortable leading teams of engineers as well as building the technical solution myself.
When I heard of a tool that scans GitHub for credential exposure, I installed it, learned it, wrote a script to scan 100+ repositories, and acted on the findings, even though nobody had asked and there was no ticket.
Colleagues rate being happy to have me on their team 9.56/10 (Sept 2026), 9.50 (Jan 2026), and 9.38 (2025).
I support 5 developer teams at the same time, which takes high adaptability.
Some apps using Elasticsearch ran on a self-managed EKS cluster and hit connectivity issues after being migrated to another platform. I created AWS OpenSearch, migrated the data from Elasticsearch, and set up a robust, secure connection, which resolved the issues.
I use AI within company guardrails, and I am keen to explore how it can help us do better what we do. For example, to troubleshoot an issue I had AI fetch S3 logs for a specific timeframe and Kubernetes pod logs, compare the error logs across systems, trace the error, document the findings, and suggest remediations.
I would rather assess all effects, long-term sustainability, and maintenance than just move tickets to done, and I do not sacrifice those for a quick gain. I think strategically about long-term gains and trade-offs.
Doing the right thing instead of just doing things right. Eager to learn, interested in new technology, driven by continuous personal development, and happy to get hands-on while thinking about business impact. Proven ability to work creatively and analytically in a problem-solving environment.
"You bring a high level of expertise and knowledge to the team and your ability to guide & help others is truly valuable. You're always approachable too. Please continue supporting the team, the way you do."
"Feyz, you do a great job of bringing a positive and collaborative approach to the team. You are approachable, supportive, and always willing to help when needed. I particularly appreciate the way you communicate clearly, listen to different perspectives, and help move discussions towards practical solutions."
Open-source and community work beyond my day job.
LearnOps is an open-source learning management platform offering high-quality, free, Turkish-language DevOps education. Built with a community-first approach, the platform features MDX-based course content, a quiz system, progress tracking, and easy OAuth login.
View projectStrengthens Madagascar's disaster risk reduction capacity by integrating monitoring for drought, floods, cyclones, landslides, and epidemics into a single platform. It leverages real-time data and predictive analytics with interactive mapping to support government institutions and UN agencies in building resilience and enabling timely, coordinated humanitarian response. The system enhances risk-informed decision-making through integrated data analytics, GIS mapping, and early warning capabilities that advance sustainable development and protect vulnerable communities.
View projectTools and technologies I work with daily.
Cloud and infrastructure credentials
Sharing lessons from the field on cloud, DevOps, and platform engineering.
A look at Amazon EC2 application status checks and how they help detect application-level problems, not just instance-level failures.
A practical look at the changes behind meaningful AWS savings, and how cloud cost optimisation can deliver measurable results without compromising service quality.
A DevOps perspective on the balance between good processes and writing code, and where each one delivers the most value.
Keep Kubernetes simple. Use it for what it's best at — scheduling stateless workloads — and move everything else out. Complexity is a liability.
How liveness, readiness, and startup probes work in Kubernetes, and how to use each one to keep applications healthy and available.
Eleven practical ways to cut AWS networking costs, each with an implementation plan.
Let's discuss how I can help with your cloud infrastructure needs.