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Alen JurenAJ

Alen Juren

Senior Backend developer

€300/day
Osijek, HR
8-15 years
PHP
Symfony
Laravel
Microservices
Fullstack

Average response time: 1 hour

About Alen

Hi! I'm Alen, a full-stack developer with 8 years of experience building web applications from the ground up — and seeing them all the way through to deployment.
My core stack is PHP/Symfony on the backend and React on the frontend, but I'm equally comfortable with Angular and React Native when the project calls for it. I've worked on everything from large-scale microservices at a lead engineer level to smaller, focused products for businesses that just need something that works well and looks great.
What makes me a bit different is that I can handle the full journey — architecture, backend, frontend, deployment, and even hosting — so you don't need to coordinate between multiple people to get your project live. I've shipped a published mobile app, built reservation and management systems, and integrated AI APIs into real products.
I work well with startups who need a reliable builder, SMBs who want a developer they can actually talk to, and agencies looking for extra capacity on ongoing projects.
If you have an idea or a problem, I'd love to hear about it!
Digital and IT Services

  • Croatian

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Chiliz
    Senior Backend developer
    DIGITAL AND IT
    August 2022 - April 2026 (3 years and 8 months)
    - Designed, developed, and maintained scalable backend systems using PHP (Symfony) in a microservices architecture serving millions of users.
    - Built and optimized high-performance REST APIs and event-driven services, ensuring low latency and high reliability under heavy load.
    - Architected and maintained distributed systems leveraging AWS services (SQS, SNS, RDS, S3, Lambda, Elasticsearch).
    - Implemented event-driven data pipelines and asynchronous processing using message queues (SQS/SNS), improving system scalability and resilience.
    - Developed blockchain-integrated backend services, including wallet management, NFT minting, and staking systems, interacting with EVM-based smart contracts via RPC APIs.
    - Designed and implemented monitoring and observability solutions using Sentry, Datadog, and Grafana, including alerting, performance tracking, and log analysis (AWS Athena).
    - Ensured high code quality and reliability through automated testing (PHPUnit, Behat) and CI/CD pipelines (GitHub, GitLab).
    - Deployed and managed containerized applications using Docker and Kubernetes (Helm, ArgoCD, GitOps workflows).
    - Collaborated cross-functionally with frontend (React) and mobile teams to deliver real-time features, API integrations, and push notification systems.

    PHP, Symfony Framework and +8 skills
    Symfony Microservices Crypto Amazon Web Services Docker
  • Plava tvornica d.o.o.
    Backend developer
    DIGITAL AND IT
    May 2018 - August 2022 (4 years and 3 months)
    Osijek, Croatia
    - Led development and delivery of multiple web applications, taking ownership of both backend and frontend components.
    - Specialized in Pimcore-based solutions, building and customizing enterprise-grade PIM/MDM systems and contributing to the Pimcore open-source ecosystem.
    - Designed and implemented RESTful APIs and backend services using PHP (Laravel), supporting complex business workflows and integrations.
    - Developed custom backend solutions, including payment provider integrations and ERP system extensions for large-scale business applications.
    - Built and maintained full-stack features using PHP and JavaScript, collaborating closely with stakeholders to deliver end-to-end solutions.
    - Engineered and maintained CI/CD pipelines, automating deployments and improving development workflows.
    - Managed infrastructure and DevOps tasks, including server provisioning (Virtualmin), database management, and production environment maintenance.
    - Created custom WordPress plugins tailored to business needs and integrations.
    - Ensured code quality and stability through automated testing using PHPUnit and Codeception across Pimcore and Laravel projects.
    PHP Laravel Symfony Pimcore Amazon Web Services

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Education

  • Bachelor of computer engineering
    The Polytechnic of Međimurje
    2018
    Bachelor of computer engineering

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