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Jan Frederik Brukhart

@janfrederikbrukhart

Full-stack engineer building Django and React applications, including client workflows that replaced spreadsheets and cut manual data work by 60%.

Germany

Message

In my current independent work, I deliver production Django applications for client businesses, replacing legacy server-rendered screens with React frontends. I moved recurring data exchanges into Celery jobs, reducing manual import and export work by 60%.

At Kern AI, I improved semantic-search relevance from 71% to 84% by refining embedding integration and Qdrant retrieval behavior for training-data records. I also worked on Python NLP services, improving request handling and integration tests.

At Rami.io, I worked on ticketing software, making payment webhook handling safe for repeated notifications and reducing duplicate payment-related actions by 95% in replay tests. Earlier, at Nephila, I developed Django CMS features and reusable components for client projects.

Experience

Work history, roles, and key accomplishments

Current

Independent Software Engineer

Current

Self-employed

May 2025 - Present (1 year 5 months)

Delivered production Django applications for client businesses, building React frontends with component-based architecture. Reduced manual import/export work by 60% and cut median API response time from 420 ms to 260 ms.

Django React JavaScript PostgreSQL Celery Docker GitHub Actions AWS CI CD GitHub Co Pilot Cursor

Backend Software Engineer AI NLP

Kern AI

Sep 2023 - Apr 2025 (1 year 7 months)

Improved semantic-search relevance from 71% to 84% and decreased NLP request failures by 30%. Collaborated in an Agile, cross-functional product team, participating in code reviews and pair programming.

Python NLP Qdrant Embeddings Semantic Search Docker GitHub Co Pilot Cursor Agile Code Review

Full-Stack Software Engineer

Rami.io

Jan 2018 - Aug 2023 (5 years 7 months)

Lessened duplicate payment-related actions by 95% in replay tests and trimmed checkout API p95 latency from 850 ms to 560 ms. Maintained a 99.5% query-regression pass rate in a migration test suite.

Django React PostgreSQL MariaDB Celery Redis Webhooks REST APIs Testing CI CD

Software Engineer

Nephila

Oct 2015 - Dec 2017 (2 years 2 months)

Enabled multilingual publishing across 3 language variants in a client CMS project. Decreased recurring import failures by 40% and expanded automated coverage to 80% for selected modules.

Django CMS Python Testing HTML CSS

Junior Web Developer - Part Time

Nephila

Mar 2014 - Sep 2015 (1 year 6 months)

Closed 18 verified browser-compatibility defects and created responsive layouts for 12 assigned pages. Introduced 10 focused regression checks for previously reported website failures.

Django HTML CSS JavaScript Responsive Design Testing