Available to hire
Hi, I’m Janko Jovanovic, a Senior Full-Stack Developer specializing in Shopify and e-commerce. I design and build end-to-end web solutions, lead development teams, and craft scalable systems that deliver real business value.
I love collaborating with designers and product managers to turn complex requirements into polished, user-friendly experiences, and I stay current with modern frontend and backend tools to keep projects fast, reliable, and secure.
Skills
Language
English
Fluent
German
Intermediate
Serbian
Fluent
Work Experience
Senior Full-Stack Web Developer at Team Cubate ApS
August 1, 2021 - PresentConsultant for Team Cubate ApS, leading development of various projects as a full-stack web developer. Responsibilities included developing custom Shopify stores from scratch (theme architecture, performance optimization, UX improvements), building and maintaining custom Shopify apps, implementing complex Shopify integrations with third-party services and APIs, collaborating with designers, product managers, and stakeholders to deliver high-quality e-commerce solutions, and providing technical guidance and mentorship to other developers.
Full-Stack Shopify Developer / Development Lead at Good Karma Agency
November 1, 2021 - January 2, 2025Led end-to-end development of custom Shopify themes and applications; architected scalable e-commerce solutions; managed a development team (code reviews, planning, mentoring); built scalable Shopify solutions using Node.js/Express, React/Next.js, and related tech; worked on remote Belgrade-based team.
Senior Full-Stack Web Developer at Teamcubate ApS
August 1, 2021 - PresentLead development for Teamcubate ApS projects as a Senior Full-Stack Web Developer. Implemented end-to-end Shopify-related work, including theme architecture, performance optimizations, and UX improvements. Built and maintained Shopify applications to extend core platform functionality. Collaborated with designers, product managers, and stakeholders to deliver high-quality e-commerce solutions. Provided technical guidance and mentorship to other developers.
Full-Stack Shopify Developer at Good Karma Agency
November 1, 2021 - January 1, 2025Led end-to-end development of custom Shopify themes and applications at Good Karma Agency (remote). Architected and delivered scalable e-commerce solutions, managed a development team (code reviews, planning, mentoring), and ensured on-time delivery. Built custom apps using Node.js, React, Remix.js, Express.js, and other stacks; integrated analytics, marketing platforms, and third-party services. Implemented technical guidance and mentorship to other developers.
Full-Stack Web Developer at Self-Employed / Freelancer
April 1, 2015 - August 1, 2021Delivered custom web and e-commerce solutions for international clients. Worked directly with stakeholders on requirements, architecture, and delivery. Implemented frontend and backend features across a wide tech stack (HTML, CSS, JavaScript, React, Node.js, Next.js, Vue.js, Liquid, Shopify APIs). Built scalable apps using Node.js, Express.js, Remix.js, and REST/GraphQL APIs.
Education
Qualifications
Industry Experience
Software & Internet, Retail, Professional Services, Other, Media & Entertainment
Skills
Hire a Full Stack Developer
We have the best full stack developer experts on Twine. Hire a full stack developer in Belgrade today.