Emre Onursoy

Senior Software Engineer · Full-Stack

Building and scaling production SaaS with React, Next.js, TypeScript, and Node.js.

Path

Roles that shaped how I build and ship software.

Feb 2026 — Aug 2026
Senior Fullstack Software Engineer
Eluvium · London
Built a full-stack B2B SaaS platform with Next.js, Node.js, PostgreSQL, and Prisma — owning weekly end-to-end feature delivery, RBAC, and real-time workflows.
Mar 2024 — Sep 2025
Senior Frontend Engineer
Career.io · New York
Delivered 30+ product features and 5+ AI capabilities across React/Next.js products; led library upgrades and large-scale frontend architecture.
Startup
Founder & Software Engineer
ActionFlows AI
Founded actionflows.ai — a no-code AI workflow automation platform. Visual builder, multi-model LLM orchestration, API triggers, scheduling, and scalable SaaS infrastructure owned end-to-end.
Visit actionflows.ai
Apr 2022 — Jun 2023
Senior Software Engineer
Mintus · London
Built FinTech frontend experiences with React and Next.js, integrating third-party services and raising quality through reusable components and testing.
Oct 2020 — Apr 2022
Senior Software Engineer
Teknoser · İstanbul
Designed and built an internal full-stack app from scratch — React frontend, .NET backend, architecture, testing, and deployment.
Sep 2019 — Sep 2020
Software Engineer
VRKod · Ankara
Shipped full-stack apps with Node.js, React, and Next.js; mentored juniors and contributed through Agile delivery.

Tools I reach for to turn ideas into working software.

Libraries I build and maintain under Startbase — reusable React tooling for real products.

Start UI
Open-source React UI library with 50+ components — accessibility-minded building blocks for modern apps.
Start UI
React Modal
@start-base/react-modal — accessible dialogs with global modal provider and hooks.
React Modal
Startbase
Open-source org for UI, forms, modals, and consent tooling used across production React apps.
Startbase

Grab the resume or reach out — always open to thoughtful conversations.