Milos Ostojic
Milos Ostojic

Senior Full-Stack Engineer

Actively looking · Member since 13 Nov 2026
Location
Belgrade, Serbia
Desired salary
Unspecified
Work preference
Remote Only / Full Time
Experience level
Senior

About

Professional summary

I am a Senior Full-Stack Engineer with more than seven years of experience building production web and mobile applications. My primary stack includes React, Next.js, React Native, Node.js, TypeScript, and PostgreSQL.

I have delivered end-to-end products across ERP, fleet management, SaaS, e-commerce, affiliate marketing, and enterprise security domains. I am comfortable owning the full delivery lifecycle, from system architecture and database design to deployment, maintenance, and mobile releases.

I have led frontend architecture in cross-functional engineering teams and built scalable design systems and component libraries. My experience includes improving application performance, SEO, state management, and development workflows.

I have mentored junior developers through code reviews and pair programming, while collaborating closely with backend engineers, product managers, QA specialists, and designers. I value maintainable code, practical product decisions, and strong team communication.

I am looking for a full-time role in a product team where I can own features end to end and continue growing toward technical leadership.

Skills

31 capabilities

Tech stack & tools

Working toolkit

Analytics

Application Hosting

Design

Languages & Frameworks

Libraries

Monitoring

Experience

Career history

Senior Frontend Developer Centific

Worked on a six-month contract for the Microsoft 365 Security & Compliance Portal, a product used by organizations worldwide.

Developed features in a large-scale React and TypeScript monorepo as part of a frontend team of six to seven engineers. Used shared component libraries and internal design systems while meeting enterprise security and accessibility standards.

Freelance Full-Stack Engineer BEEDEV

Delivered more than 10 production web applications and two cross-platform mobile applications for clients in ERP, fleet management, SaaS, and e-commerce. Owned architecture, implementation, deployment, and ongoing maintenance.

Architected and built an ERP platform used daily by more than 70 employees to manage operations involving over 70 heavy machines. The platform covered fuel tracking, maintenance, assignments, operator certifications, equipment transfers, and role-based workflows.

Built a React Native mobile application, a Next.js administration portal, and a real-time fleet tracking platform using OBD devices and OpenStreetMap. Designed backend services with Node.js, Express, and Supabase, including authentication, RBAC, REST APIs, push notifications, and reporting.

Managed production infrastructure and delivery processes using VPS hosting, Nginx, CI/CD pipelines, and mobile application release workflows.

Senior Full-Stack Developer Polaire Labs

Led frontend development in a six-person engineering team consisting of frontend and backend developers. Owned frontend architecture and the design system across React, Next.js, and Tailwind CSS projects.

Led migrations from Redux to TanStack Query and Zustand, and from traditional CSS to Tailwind CSS, reducing boilerplate and simplifying state management. Built affiliate-marketing and e-commerce integration dashboards using React, Next.js, Node.js, and TypeScript.

Improved rendering performance and SEO through SSR and SSG strategies across client projects. Mentored two junior developers through code reviews, pairing, and day-to-day technical guidance.

Frontend Developer SuperCluster Studio

Developed a React-based e-commerce progressive web application using Adobe PWA Studio and Magento, with an emphasis on application performance.

Integrated advanced search solutions and improved organic discoverability through SSR and SSG strategies. Mentored two junior developers while working in an Agile product team.

Frontend Developer NewTec Solutions

Built features for a large B2B meetings platform with 26 modules using React, TypeScript, and Redux. Collaborated in a multidisciplinary team of approximately 20 people, including frontend and backend engineers, product management, QA, and design.

Developed a dynamic form builder and a custom CMS used across platform modules. Delivered real-time communication, scheduling, and workflow functionality for web and React Native applications.

Continued maintaining the platform as an external contractor for one year after the full-time role ended.

Education

Learning history
No education data available.

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