Senior Full-Stack Engineer / Frontend Tech Lead

Building scalable SaaS products from architecture to production.

AI-assisted engineering • Product ownership • Technical leadership • Developer tooling

Senior Full-Stack Engineer / Frontend Tech Lead with 5+ years of experience building production software.

I build products from idea to production – designing architecture, building scalable systems, collaborating across the stack, and delivering reliable software that creates real value.

My work combines frontend technical leadership, product ownership, AI-assisted engineering, and modern SaaS development.

I contribute across architecture, product decisions, technical leadership, mentoring, and production delivery.

My favorite projects usually sit at the intersection of:

• frontend technical leadership

• product ownership

• AI-assisted engineering

• developer tooling

• modern SaaS architecture

• emerging technologies

I learn quickly, adapt rapidly, and continuously explore emerging technologies that create real value for products and engineering teams.

AI is an integral part of my engineering workflow.

I actively use Cursor, Claude Code, ChatGPT, Codex, and GitHub Copilot for:

• architecture exploration

• implementation

• debugging

• testing

• documentation

• code reviews

• rapid prototyping

I treat AI as a force multiplier while keeping correctness, maintainability, and engineering judgement human-owned.

🚀 Telemetry Tracker

Open-source observability platform built end-to-end featuring:

• Multi-tenant SaaS architecture

• Custom telemetry SDKs

• Usage metering and API key management

• Authentication and organization management

• Full-stack dashboard applications

• Dockerized deployments and CI/CD

• Production-ready developer tooling

Designed, implemented, deployed, documented, and maintained independently.

Website → telemetry-tracker.tacko.io
Repository → github.com/Telemetry-Tracker/telemetry-tracker
Documentation → telemetry-tracker.tacko.io/docs

• AI-native engineering workflows

• Developer tooling and observability

• Full-stack SaaS products

• Product architecture and technical leadership

Open-source observability platform built from scratch featuring custom SDKs, error tracking, analytics, authentication, RBAC, and multi-tenant architecture.

Frontend Tech Lead on a production SaaS platform, leading frontend architecture, mentoring engineers, improving performance, and collaborating closely with backend teams.

Worked on one of the world's leading fishing platforms, building scalable frontend applications and an SEO platform powering over 30 million dynamically generated pages.

Cross-platform word game built with React Native featuring XP progression, achievements, leaderboards, authentication, and mobile-first gameplay across iOS, Android, and the web.

AI-assisted publishing platform exploring automated content generation, SEO optimization, and scalable publishing workflows.

Portfolio → tacko.io
LinkedIn → linkedin.com/in/unjica
Email → sanja.malovic2@gmail.com