Curious by default. Open to new adventures.

Ömer Faruk CAPUR

Software engineer building reliable product systems with Go and TypeScript—and exploring how credentials should work for humans, applications and AI agents.

At CHECK24, I ship production-critical travel features across backend services and web applications. Outside work, I am building Keepid—a local-first credential platform focused on strong encryption, hardware-backed authentication and context-aware authorization.

Leipzig, Germany
Residency permit in Germany
German C2 (certified)English C1 (professional)

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At a glance

Current role: Software Developer at CHECK24 Vergleichsportal GmbH
Experience: 2 years professional experience
Focus: Go · Node.js · TypeScript · React
Currently exploring: Security engineering

Core strengths & stack

Go

Node.js

TypeScript

React

SQL

NoSQL

Docker

AWS

Playwright

Career

Experience

Professional experience building production software.

CHECK24 Vergleichsportal GmbH

02/2025 – Present

Software Developer

Leipzig, Germany · Hybrid, full-time

Own production-critical features from concept to release on CHECK24’s travel booking platform across Search, Hotel, Flight, Extras, Summary, and Checkout — including the product surfaces on flug-unterkunft.check24.de.

Delivered full-stack work across six core booking domains in a complex high-traffic platform
Defined Protocol Buffer interfaces for Go/gRPC services in a domain-driven architecture (MySQL, Redis, AWS)
Integrated a new flight provider and shipped it via a cross-team joint release into a live split test with about +30% provider-related revenue signal
Expanded tracking, monitoring, and observability with Grafana, Kibana, and Sentry
Improved web-app performance (SSR, caching, prefetching, lazy images, history/state) toward native iOS/Android CVO levels
Built and optimized a shared web app for browser and iOS/Android WebViews embedded as CHECK24 app plugins
Introduced Playwright E2E coverage for critical booking flows and cut manual test effort by over 80%
Modernized frontend architecture from Next.js toward Remix for maintainability, SSR, and release stability
Coordinated with product, UX/UI, backend, and multiple CHECK24 teams in an ~40-person agile product organization

Owned a large supplier integration epic for the travel booking platform, aligning product, reliability, and multi-channel delivery requirements.
Open case study
Helped deliver a chatbot integration for the travel team as part of a broader company initiative.
Open case study
Continuously improved performance, quality, and operational ownership on a high-traffic travel comparison and booking platform.
Open case study

Teknasyon Tech

11/2024 – 01/2025

Frontend Developer Intern

Remote · Full-time

Built and refined partner-facing web interfaces for social-responsibility websites, translating stakeholder needs into responsive UI delivered on schedule.

Shipped maintainable frontend structures with Figma and modern UI libraries
Collaborated closely with internal teams on timely delivery and consistent UX

Clarusway GmbH

11/2023 – 11/2024

Full Stack Development Bootcamp

Online · Full-time

Completed a rigorous 12-month full-time Full Stack Development Bootcamp at Clarusway GmbH — an industry-oriented curriculum covering frontend, backend, databases, authentication, cloud basics, agile teamwork, and production delivery. The program was decisive in building a strong engineering foundation before joining CHECK24.

Trained full-time for 12 months on HTML, CSS, JavaScript/TypeScript, React, Node.js, Express, MongoDB, Git, REST APIs, and collaborative delivery practices
Built, reviewed, and deployed 40+ web applications through progressive curriculum modules and team sprints
Led ~95% of backend work on the MERN capstone Volunteerium (volunteerium.com), including auth, realtime Socket.IO features, S3 media, and API documentation
Owned ~40% of the frontend including admin panel flows, Google OAuth, and reCAPTCHA
Practiced code reviews, debugging, BRD/ERD planning, Figma handoff, and release readiness in a seven-person cohort

Career-transition capstone: a seven-person, three-month MERN team product. Early proof of backend ownership (~95%), auth, realtime, and shipping a live platform—not a claim of current production engineering level.
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Selected work

A few highlights from my recent work and technical explorations.

Personal projectIn active development

Keepid

A local-first credential platform for passwords, passkeys, API keys and machine identities—designed for people, applications and AI agents.

TypeScriptGoWebAuthnCryptographyLocal-first

Open project page Visit live site

GitHub activity

Open-source work, experiments and ongoing technical activity.

About

Background, languages, and how I got here.

I studied dentistry before choosing software. After moving to Germany, I reached German C2 (certified), completed an intensive full-stack bootcamp at Clarusway, and joined CHECK24 Vergleichsportal GmbH in Leipzig as a Full Stack Software Developer. I ship features end to end across booking domains, care about performance and observability, and am building Keepid as independent proof of security and systems thinking.

Current interests

Security engineering
Local-first credentials
Developer tooling

Location: Leipzig, Germany
Work authorization: Residency permit in Germany
Languages: German C2 · English C1

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