Available to hire
I’m an experienced Infrastructure Engineer with 20+ years in the industry, focusing on DevOps, site reliability, and cloud-native architectures. I enjoy turning complex systems into scalable, reliable, and secure platforms that developers love to work with.
I am a strong advocate of DevOps culture, with a track record of delivering Agile-driven projects and future-proof solutions. I operate with a contractor mindset, recognizing the temporary nature of contracting, and aim to build resilient systems backed by robust, well-supported technologies.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Croatian
Advanced
Italian
Advanced
Spanish; Castilian
Beginner
French
Beginner
Work Experience
Senior Site Reliability Engineer at HM Revenue & Customs (HMRC)
December 1, 2024 - PresentManage and support API infrastructure and lifecycle across multiple teams and environments; oversee production Kubernetes clusters, ensuring stability, scalability, and security; lead incident response and post-incident reviews to improve reliability; provide operational support and monitoring using standard tools and custom observability solutions; collaborate with developers to ensure consistent deployment practices and system health.
Senior Site Reliability Engineer at Booking.com
June 1, 2024 - December 1, 2024Member of the Core Infrastructure team focusing on DNS systems and internal APIs; rewrote and optimized critical internal APIs using Go; applied SRE best practices to reduce operational overhead and improve developer experience; led initiatives to streamline support pipelines; mentored junior engineers on refactoring, testing strategies, and data security practices; used Puppet and Terraform to manage Linux-based cloud infrastructure on AWS; contributed to the reliability and scalability of containerized applications using Docker and Kubernetes.
Senior Infrastructure Operations Engineer at Companies House
August 1, 2023 - November 1, 2024Led the transition of critical microservices from Marathon/Mesos to AWS Fargate; engineered robust IaC modules in Terraform to standardize environments; designed secure, scalable toolchains and CI/CD pipelines using Concourse to enable self-service capabilities for developers; managed and maintained infrastructure platforms supporting critical public-facing services; performed operational reviews and audits, identifying opportunities for resilience and cost optimization; championed a DevOps-first mindset by proposing infrastructure automation solutions that accelerated release cycles; orchestrated upgrades and migration strategies for legacy systems to align with modern cloud-native architectures; delivered incident response improvements and documentation.
Senior Site Reliability Engineer at Adaptive Financial Consulting
August 1, 2022 - June 1, 2023Building the infrastructure for a financial multi-asset trading platform based on AWS and microservice architecture; developing IaC using Terraform to ensure maximum compliance with industry security and regulatory standards; improving observability using Fluentd/Fluent Bit for logs to CloudWatch, OpenSearch, and Prometheus; writing and debugging Python and Bash scripts; building CI/CD systems using CircleCI aimed at deployment of mobile applications; integrating cloud components with external services (SecurityHub, GuardDuty, Opsgenie, Jira) to improve interoperability and visibility of potential security issues; planning, executing and troubleshooting production releases.
Senior DevOps Consultant / DevSecOps Engineer at Dae.mn (via Reach Plc) / Superdry
August 1, 2021 - April 1, 2022Security assessment of the client’s cloud infrastructure spanning multiple AWS accounts; setting security foundations in accordance with relevant standards; centralising cloud management and writing custom security policies; centralising security management using AWS-based and custom products (Security Hub, Prowler, Account Factory) to remediate current security issues and prevent future occurrences; architecting secure cloud-based solutions and transition procedures for legacy systems; writing Python-based lambda functions to facilitate safe data transfer using AWS Transfer Family.
Senior DevOps Engineer - Superdry at Dae.mn
August 1, 2021 - April 1, 2022Design and implementation of AWS-based modular CI/CD system; complete rewrite and redeployment of legacy Terraform code used to manage the whole company’s infrastructure; providing support and mentoring to junior engineers.
Senior Site Reliability Engineer at YOOX NET-A-PORTER GROUP
May 1, 2018 - April 1, 2021Responsible for maintenance of a multi-tier product catalogue consisting of SOLR, caching, application firewall and a custom Scala-based app; designed and authored infrastructure as code for the product, along with the continuous blue/green deployment strategy on AWS infrastructure; troubleshooting caching, queuing, scaling issues and networking using Amazon CloudWatch, Elasticsearch and related tools; managing product upload queues; building infrastructure and CI/CD pipelines; maintaining other on-prem Kubernetes and AWS-based services.
Senior DevOps Engineer at Motion Picture Solutions
October 1, 2016 - November 1, 2017Designing a complete IAAS solution based on Docker containers and AWS (ECS, ASG, ELB, RDS, CloudFront) as support for multiple microservice-based applications in the cloud; solution is Terraform and Ansible-based, supporting multiple duplicable environments to facilitate CI/CD, high availability and secure internet-facing services; building CI/CD process and pipeline using Jenkins; developing bespoke IAAS-based VPN solution between AWS and multiple corporate data centres.
DevOps Engineer at Videotel Marine International (KVH Industries, Inc.)
May 1, 2015 - June 1, 2016Introducing DevOps workflow to the organisation; writing and improving Python and Bash scripts for clients and servers; migration of legacy Ubuntu/Java-based infrastructure to the cloud; establishing a robust and effective integration and delivery pipeline using Vagrant, Ansible, Git, Jenkins; architecting AWS-based VPC migration; working closely with developers in Java/JBoss environments; scripting and automation across legacy and cloud environments.
IT Systems Manager at AGB Nielsen Media Research Croatia
February 1, 2002 - November 1, 2004Led a technical IT setup for TV audience measurement: 2 SCO Unix servers, 6 Linux servers and a high-availability data-collection system; set up office IT infrastructure; monitoring tools for mission-critical hardware/software; VPN design; backup strategy; on-site client support; collaborated with partners to deliver tailored solutions.
Maintenance and Development Lead at OneWorld platform for Southeast Europe
December 1, 2004 - May 1, 2008Maintenance and development of a web portal based on the eZ Publish platform; content transition from eZ Publish to Drupal; guidance on technological decisions and transitions from commercial to FLOSS solutions; partner organizations’ tech consulting; email server maintenance; deployment and migration activities.
General Linux System Administrator at Multimedia Institute
January 1, 2000 - January 1, 2015General Linux system administration and automation; installation and maintenance of servers and network infrastructure; deployment of headless client-server systems; mail servers and web servers; DNS management; training and mentoring; migration of core services to cloud; DNS servers (Bind9, djbdns).
Senior Platform Engineer / Senior Site Reliability Engineer at Adaptive Financial Consulting
August 1, 2022 - June 1, 2023Building the infrastructure for a financial multi-asset trading platform based on AWS and microservice architecture. Developing IaC using Terraform to ensure compliance with industry security and regulatory standards. Improving observability by setting Fluentd/Fluentbit for collecting and shipping logs to CloudWatch, OpenSearch, and Prometheus. Writing and debugging Python and Bash scripts. Building CI/CD systems using CircleCI aimed at deploying mobile applications. Integrating cloud components with external services (SecurityHub, GuardDuty, Opsgenie, Jira) to improve interoperability and visibility of potential security issues. Planning, executing and troubleshooting production releases.
Senior DevOps Consultant / DevSecOps Engineer at Dae.mn (via Reach Plc)
August 1, 2021 - July 1, 2022Performing security assessment of the client’s cloud infrastructure across 50 AWS accounts. Centralising cloud management and writing custom security policies. Centralising security management using AWS-based and custom products (Security Hub, Prowler, Account Factory) to remediate current security issues and prevent future occurrences. Architecting secure cloud-based solutions and transition procedures for legacy systems. Writing Python-based Lambda functions to facilitate safe data transfer using AWS Transfer Family.
Senior DevOps / DevOps Engineer at Motion Picture Solutions
October 1, 2016 - November 1, 2017Designing a complete IAAS solution based on Docker containers and AWS (ECS, ASG, ELB, RDS, CloudFront) as support for multiple microservice-based applications in the cloud. The solution is based on Terraform and Ansible, supporting multiple duplicable environments for CI/CD, HA, and secure internet-facing services. Building CI/CD processes with Jenkins.
General IT Specialist at Multimedia Institute
January 1, 2000 - December 31, 2015Jane of all trades: general Linux system administration, automation with Bash and Python, server deployment and maintenance, high-availability hosting for multiple sites, DNS management, and mentoring on advanced Linux usage. Migrated core services to cloud-based infrastructure and supported network services.
OneWorld Platform Administrator at OneWorld platform for Southeast Europe
December 1, 2004 - May 1, 2008Maintenance and development of a web portal, transitioning content from eZ Publish to Drupal, providing tech consulting to partner organizations, and supporting infrastructure for service delivery.
Education
MA in Sociology at Faculty of Humanities and Social Sciences, University of Zagreb
January 1, 1994 - January 1, 1999MA in Sociology at University of Zagreb
January 1, 1994 - January 1, 1999Qualifications
Industry Experience
Software & Internet, Government, Financial Services, Media & Entertainment, Professional Services, Education
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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