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I'm Juozas, a results-oriented full stack engineer with over 20 years in web applications and scalable backend services. I thrive on building robust systems using Go, PHP, Python, and JavaScript, and I own the full development lifecycle from code to production. My DevOps background ensures reliable deployments, monitoring, and scalable infrastructure. I've led design and delivery of high-traffic systems, crafted microservices, and built custom tooling (MTA, DNS server, and a scalable message broker). I enjoy collaborating with cross-functional teams across multi-cloud environments, balancing performance, maintainability, and user experience. I’m comfortable spanning from database design to frontend implementation and mentoring others along the way.…I'm Juozas, a results-oriented full stack engineer with over 20 years in web applications and scalable backend services. I thrive on building robust systems using Go, PHP, Python, and JavaScript, and I own the full development lifecycle from code to production. My DevOps background ensures reliable deployments, monitoring, and scalable infrastructure. I've led design and delivery of high-traffic systems, crafted microservices, and built custom tooling (MTA, DNS server, and a scalable message broker). I enjoy collaborating with cross-functional teams across multi-cloud environments, balancing performance, maintainability, and user experience. I’m comfortable spanning from database design to frontend implementation and mentoring others along the way.

Juozas Lizdenis

Full Stack Developer, Back-End Developer, Web Developer

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I'm Juozas, a results-oriented full stack engineer with over 20 years in web applications and scalable backend services. I thrive on building robust systems using Go, PHP, Python, and JavaScript, and I own the full development lifecycle from code to production. My DevOps background ensures reliable deployments, monitoring, and scalable infrastructure. I've led design and delivery of high-traffic systems, crafted microservices, and built custom tooling (MTA, DNS server, and a scalable message broker). I enjoy collaborating with cross-functional teams across multi-cloud environments, balancing performance, maintainability, and user experience. I’m comfortable spanning from database design to frontend implementation and mentoring others along the way.…I'm Juozas, a results-oriented full stack engineer with over 20 years in web applications and scalable backend services. I thrive on building robust systems using Go, PHP, Python, and JavaScript, and I own the full development lifecycle from code to production. My DevOps background ensures reliable deployments, monitoring, and scalable infrastructure. I've led design and delivery of high-traffic systems, crafted microservices, and built custom tooling (MTA, DNS server, and a scalable message broker). I enjoy collaborating with cross-functional teams across multi-cloud environments, balancing performance, maintainability, and user experience. I’m comfortable spanning from database design to frontend implementation and mentoring others along the way.

Available to hire

I’m Juozas, a results-oriented full stack engineer with over 20 years in web applications and scalable backend services. I thrive on building robust systems using Go, PHP, Python, and JavaScript, and I own the full development lifecycle from code to production. My DevOps background ensures reliable deployments, monitoring, and scalable infrastructure.

I’ve led design and delivery of high-traffic systems, crafted microservices, and built custom tooling (MTA, DNS server, and a scalable message broker). I enjoy collaborating with cross-functional teams across multi-cloud environments, balancing performance, maintainability, and user experience. I’m comfortable spanning from database design to frontend implementation and mentoring others along the way.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Lithuanian

Fluent

English

Fluent

Russian

Advanced

Work Experience

Solution Architect / Full Stack Developer at TogoMQ

August 1, 2025 - Present

Architected and built a high-performance GoLang-based message broker and scalable backend. Designed system architecture for a scalable messaging platform, developed backend and frontend components, optimized database usage, and created multi-language SDKs. Managed deployments and infrastructure to ensure high availability and smooth cross-language integration.

Backend Developer (GoLang, Python) / DevOps Engineer at Shell U.K. Limited

January 1, 2022 - August 1, 2025

Designed and implemented GitOps workflows and CI/CD pipelines using GitHub Actions, Docker, Flux CD, Kubernetes, Terraform, and AWS. Built and maintained backend APIs and microservices in GoLang and Python, and developed ETL pipelines with Python, Dagster, and Airflow.

DevOps Engineer / GoLang Developer / PHP Full Stack Developer at Enter Pages Pro Ltd.

April 1, 2019 - December 1, 2021

Designed scalable multi-cloud infrastructure and built CI/CD pipelines with GitLab and Jenkins. Managed Docker lifecycles and Kubernetes orchestration, automated infrastructure provisioning with Ansible, and developed full-stack apps using GoLang, PHP, Yii2, Laravel, MongoDB, and Redis. Built a custom MTA and DNS server for high‑volume email processing.

Senior DevOps Engineer at Blackford Analysis Ltd.

June 1, 2018 - April 1, 2019

Designed and maintained enterprise CI/CD pipelines with Jenkins and Docker. Automated infrastructure with Ansible and SaltStack, administered Linux/Windows servers on Google Cloud and AWS, and managed virtualization (VMware ESXI, KVM). Implemented backup, disaster recovery, VPNs, and security audits.

Senior DevOps Engineer / Backend and API Developer at UAB ID Forty Six

September 1, 2017 - May 1, 2018

Designed large-scale automated infrastructure and built multi-provider CI/CD across OVH Cloud, DigitalOcean, and dedicated servers. Implemented REST APIs for core product functionality and delivered high-performance Laravel and MongoDB-based services.

Senior DevOps Engineer / Full Stack Developer at Enter Pages Pro Ltd.

September 1, 2015 - August 1, 2017

Designed horizontally scalable product architecture and CI/CD pipelines across OVH Cloud and dedicated servers. Built self-service e-commerce solutions (Yii2, Bootstrap, MySQL) and developed web scraping framework. Led deployment and maintenance of microservices and databases.

Full Stack PHP Developer / System Administrator at Venito Reklama, UAB

September 1, 2013 - September 1, 2015

Developed and maintained full-stack PHP applications and admin infrastructure. Administered Linux servers and optimized hosting environments. Delivered CRM components and MTA for high-volume newsletter delivery.

Freelancer (Full Stack Developer / System Administrator)

September 1, 2003 - August 1, 2013

Designed and developed custom CRM systems and web applications for multiple clients. Managed Linux server infrastructure, implemented automation, and delivered end-to-end solutions with PHP, MySQL, MongoDB, and related technologies.