Delgermurun (Degi) Purevkhuu

Backend engineer. I build billing, payments, and AI platforms.

Berlin, Germany

LinkedIn
DP

About

Backend engineer with 15+ years of experience. At Kittl I built the subscription and payments backend, then the AI generation platform. I like taking messy, business-critical systems and making them simple and reliable. Main tools: TypeScript, Node.js, PostgreSQL, Python, Stripe, and AWS.

Work Experience

Kittl
Berlin, Germany

2024 - Present

Senior Software Engineer

Backend engineer on the monetization team, then the AI platform team. Technologies: TypeScript, Node.js, PostgreSQL, Prisma, Stripe, Redis, and AWS.
  • Built a dynamic pricing system, so prices can be set per country without code changes.
  • Expanded the payment system to support multiple Stripe accounts across regions.
  • Moved subscriptions from user level to workspace level, so one owner can pay for many workspaces and seats.
  • Made payment flows safe against race conditions and duplicate charges using locking and idempotent requests.
  • Built a CMS-driven AI model system, so new image and video models can be added through config instead of code changes.
  • Added multi-provider AI generation with automatic fallback and traffic splitting between providers.
  • Added video generation, image editing tasks like inpainting and outpainting, and token pricing based on input options and subscription plan.

Jina AI
Berlin, Germany

2022 - 2024

Senior Software Engineer

Built Gen AI products like PromptPerfect, SceneXplain, Rationale, and JinaChat on top of LLMs and image models. Also worked on APIs, infrastructure, and a Stripe-based billing system. Technologies: TypeScript, Python, Node.js, MongoDB, Google Cloud, AWS, and Firebase.

tye GmbH
Berlin, Germany

2020 - 2022

Senior Backend Developer

Worked on a data cleansing, analysis, and enrichment platform. Technologies: Python, Typescript, React, SQLite, and MongoDB.

Self Employed
Remote

2016 - 2020

Software Engineer

Worked with clients from Mongolia, Serbia, and the USA. Built several web apps and SaaS apps using Node.js, Typescript, MeteorJS, React, and MongoDB.

The New Media Group
Ulaanbaatar, Mongolia

2010 - 2016

Web Developer

Worked on several web apps, including CMS, CRM, HR systems, and real estate ads. Technologies: Python, Django, MeteorJS, MySQL, Memcache, and ElasticSearch.

Education

Mongolian University of Science and Technology

2006 - 2010
Bachelor's Degree in Computer Science

Skills

TypeScript
Node.js
Python
PostgreSQL
Prisma
MongoDB
Redis
Stripe
LLMs / Gen AI
React
AWS
Google Cloud

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