Senior Freelance Backend Engineer · Rust · PostgreSQL · TypeScript · AI/LLM/RAG · Remote
Aktualisiert am 02.10.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 02.10.2026
Verfügbar zu: 100%
davon vor Ort: 0%
Rust
PostgreSQL
Back-End
Künstliche Intelligenz
Redis
Kotlin
Java
REST
Linux
Docker
Ansible
CI/CD
Continuous Integration
Testautomatisierung
Node.js
RAG
TypeScript
Open Source
Microservices
German
Muttersprache
English
Verhandlungssicher
Spanish
fluent

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

7 years 6 months
2019-04 - now

Discussion platform

Open-Source Maintainer
Open-Source Maintainer
  • Maintain a federated discussion platform (ActivityPub) with 40,000+ monthly active users, funded full-time by donations
  • Backend development in Rust and TypeScript: federation protocol design, PostgreSQL schema and query optimisation
  • Operate the service end to end: releases, performance tuning, automated testing, community management
on request
Remote
5 months
2023-01 - 2023-05

Tangle - Backend development for cryptocurrency projects

Backend Consultant
Backend Consultant

Webb
Remote
1 year 3 months
2018-12 - 2020-02

Server administration and infrastructure automation

DevOps Engineer Linux Docker Ansible
DevOps Engineer
  • Server administration and infrastructure automation (Linux, Docker, Ansible) for a privacy-focused Android OS
Linux Docker Ansible
e/ Foundation
Remote
9 months
2016-11 - 2017-07

Built a shopping app

Android Developer
Android Developer
  • Built a shopping app from scratch in two months as main developer
Casual Steps, Inc
Remote / South Korea
1 year 5 months
2015-02 - 2016-06

peer-to-peer video sharing app

Android Developer
Android Developer
  • Main developer of a peer-to-peer video sharing app, including the networking library
videmic GmbH
Berlin

Aus- und Weiterbildung

Aus- und Weiterbildung

2012 - 2016

Bachelor of Computer Science

TU Berlin


Key Focus:

  • Software development; semester abroad in Finland.
  • Thesis: on request

Position

Position

Senior Backend Engineer

Kompetenzen

Kompetenzen

Top-Skills

Rust PostgreSQL Back-End Künstliche Intelligenz Redis Kotlin Java REST Linux Docker Ansible CI/CD Continuous Integration Testautomatisierung Node.js RAG TypeScript Open Source Microservices

Schwerpunkte

AI/LLM/RAG integration
LLM APIs, embeddings, vector search



Produkte / Standards / Erfahrungen / Methoden

Profile

Senior backend engineer and open-source maintainer with 10+ years building, scaling and operating production systems. Specialised in Rust, PostgreSQL and TypeScript/Node.js backends with hands-on DevOps (Linux, Docker, Ansible, CI/CD). Maintain a federated platform serving 40,000+ monthly active users and currently expanding into AI/LLM/RAG integration.


Skills

  • Rust
  • TypeScript
  • Node.js
  • PostgreSQL
  • SQL
  • Redis
  • REST API design
  • backend architecture
  • microservices
  • Linux
  • Docker
  • Ansible
  • CI/CD
  • automated testing
  • code review
  • Kotlin
  • Java (Android)
  • Python

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

7 years 6 months
2019-04 - now

Discussion platform

Open-Source Maintainer
Open-Source Maintainer
  • Maintain a federated discussion platform (ActivityPub) with 40,000+ monthly active users, funded full-time by donations
  • Backend development in Rust and TypeScript: federation protocol design, PostgreSQL schema and query optimisation
  • Operate the service end to end: releases, performance tuning, automated testing, community management
on request
Remote
5 months
2023-01 - 2023-05

Tangle - Backend development for cryptocurrency projects

Backend Consultant
Backend Consultant

Webb
Remote
1 year 3 months
2018-12 - 2020-02

Server administration and infrastructure automation

DevOps Engineer Linux Docker Ansible
DevOps Engineer
  • Server administration and infrastructure automation (Linux, Docker, Ansible) for a privacy-focused Android OS
Linux Docker Ansible
e/ Foundation
Remote
9 months
2016-11 - 2017-07

Built a shopping app

Android Developer
Android Developer
  • Built a shopping app from scratch in two months as main developer
Casual Steps, Inc
Remote / South Korea
1 year 5 months
2015-02 - 2016-06

peer-to-peer video sharing app

Android Developer
Android Developer
  • Main developer of a peer-to-peer video sharing app, including the networking library
videmic GmbH
Berlin

Aus- und Weiterbildung

Aus- und Weiterbildung

2012 - 2016

Bachelor of Computer Science

TU Berlin


Key Focus:

  • Software development; semester abroad in Finland.
  • Thesis: on request

Position

Position

Senior Backend Engineer

Kompetenzen

Kompetenzen

Top-Skills

Rust PostgreSQL Back-End Künstliche Intelligenz Redis Kotlin Java REST Linux Docker Ansible CI/CD Continuous Integration Testautomatisierung Node.js RAG TypeScript Open Source Microservices

Schwerpunkte

AI/LLM/RAG integration
LLM APIs, embeddings, vector search



Produkte / Standards / Erfahrungen / Methoden

Profile

Senior backend engineer and open-source maintainer with 10+ years building, scaling and operating production systems. Specialised in Rust, PostgreSQL and TypeScript/Node.js backends with hands-on DevOps (Linux, Docker, Ansible, CI/CD). Maintain a federated platform serving 40,000+ monthly active users and currently expanding into AI/LLM/RAG integration.


Skills

  • Rust
  • TypeScript
  • Node.js
  • PostgreSQL
  • SQL
  • Redis
  • REST API design
  • backend architecture
  • microservices
  • Linux
  • Docker
  • Ansible
  • CI/CD
  • automated testing
  • code review
  • Kotlin
  • Java (Android)
  • Python

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