Available

Stefan Matic

Senior full-stack engineer for products across industries.

I ship production systems end to end for SaaS, ecommerce, healthcare, logistics, FinTech, and more—UI through APIs, data, and cloud delivery.

Niš, Serbia · Remote
Focus
YEARS
10+
BASED
Niš / Remote
FOCUS
Full-stack
Frontend frameworks
Product UIs across React, Vue, and Angular eras
ReactNext.jsVue.jsNuxt.jsAngularJSTypeScript
Backend languages
APIs and services for product workflows across industries
GoJavaPythonNode.jsRails
Cloud & data
Multi-cloud delivery, SQL and NoSQL, streaming
AWSGCPAzurePostgresMongoDBKubernetesKafka
Full-stack delivery
Ship end to end—UI through infra and release
DockerCI/CDWebSocketsRedisjscodeshift

Ten years shipping products across industries—SaaS, ecommerce, healthcare, logistics, education, payments, and hospitality. Frontend through infra—whatever the product needs.

TRADING SYSTEMS
WebSockets, orders, portfolio state
AI PRODUCTS
Pronunciation pipelines, AWS delivery
MODERNIZATION
Codemods, large React migrations
FULL-STACK
Go, Python, Rails, Next.js
01 / My Work

Work that shipped across real products and stacks.

Examples across FinTech, education, donations, HR SaaS, and hospitality—same approach for any industry.

01FinTech

Multi-Asset Trading Platform

Independent Client Engagement·2025 — Present·Senior Software Engineer

Architected a browser trading workspace that keeps high-frequency market data responsive while isolating order execution for correctness and auditability.

Next.jsTypeScriptGoWebSocketsPostgreSQLRedisAWS
Multi-Asset Trading Platform product interface
02AI

ELSA Speak

Scalo·2021 — 2025

Owned backend and cloud delivery so AI pronunciation workflows could fail or scale independently without taking down core learning APIs.

PythonREST APIsPostgreSQLDockerAWS
ELSA Speak product interface
03FinTech

Change Donations

Scalo·2019 — 2021

Delivered card-linked charitable giving where round-ups stayed correct, auditable, and understandable across countries and currencies.

Ruby on RailsReactReduxPostgreSQLREST APIs
Change Donations product interface
04HR Technology

Kultify

Kultify·2016 — 2019

Owned the React client portal and modernized a large HR SaaS codebase with codemods—shipping features while reducing migration risk.

ReactJavaScriptjscodeshiftHTMLCSS
Kultify product interface
05Hospitality

Frontdesk Anywhere

TNation·2014 — 2016

Built a responsive hotel ops UI for reservations and front-desk workflows, with automated coverage that caught regressions before ops felt them.

AngularJSJavaScriptREST APIsRequireJSJasmine
Frontdesk Anywhere product interface
02 / Experience

A decade of roles with clear product ownership.

CURRENT

Senior Software Engineer

Self-Employed·February 2025 — Present

Independent client work on a multi-asset trading platform—Next.js workspace, Go services, live market data over WebSockets.

KEY WORK
  • Architected and built the trading workspace UI and supporting APIs
  • WebSocket market-data streaming with reconnect and freshness handling
  • Postgres schemas for orders, positions, and portfolio history
  • AWS deployment and day-to-day production delivery with the client
STACK
Next.jsGoTypeScriptWebSocketsPostgreSQLAWSGCP
03 / Expertise

Languages and platforms I use in production.

01

Frontend Systems

Product UIs for SaaS portals, workflows, and dashboards—TypeScript-heavy interfaces that stay maintainable under change.

  • React
  • Next.js
  • TypeScript
  • Vue.js
  • Nuxt.js
  • AngularJS
  • React Native
  • Responsive Design
  • State Management
  • Accessibility
02

Backend Engineering

APIs and services in Go, Python, and Rails—domain workflows, data models, and the auth around them.

  • Go
  • Java
  • Node.js
  • Python
  • Django
  • Ruby on Rails
  • PHP
  • Laravel
  • REST APIs
  • Service Architecture
  • Authentication
03

Cloud & Data

AWS/GCP/Azure delivery, Postgres-backed products, and pipelines when the product needs them—including Kubernetes and Kafka.

  • AWS
  • GCP
  • Azure
  • Kubernetes
  • Kafka
  • BigQuery
  • Dataform
  • PostgreSQL
  • MongoDB
  • Data Pipelines
  • Cloud Services
  • Third-Party Integrations
04

Delivery & Quality

CI/CD, automated tests, and review habits from AngularJS-era Protractor suites through modern release pipelines.

  • Cypress
  • Jasmine
  • Karma
  • Protractor
  • Automated Testing
  • Code Review
  • CI/CD
  • Clean Architecture
  • SOLID
  • Technical Planning
04 / About

A hands-on engineer working remotely from Niš.

Stefan Matic — Full Stack Software Engineer
EDUCATION
University of Belgrade
Bachelor's Degree in Computer Science
2011 — 2014

I'm a full-stack engineer based in Niš. Most of my work has been client delivery through Scalo and TNation, plus product work at Kultify and independent builds across industries.

I care about clear interfaces, boring reliability, and architecture you can change without a rewrite—whether the domain is SaaS, ecommerce, healthcare, logistics, or something adjacent. Day to day that means product UIs, backend services, cloud delivery, and the messy integrations that keep products shipping.

05 / Contact

Available for senior roles and select client work.

Open to SaaS, ecommerce, healthcare, logistics, FinTech, and similar product domains. Remote from Niš, or on-site for the right team.

Email me →
LOCATION
Niš, Serbia
Available for remote collaboration