Hello, I'm Konstantin, a Software Engineer with 4+ years of experience. Enjoyed every minute of it & very much look forward to meet and work with like-minded people! Let's connect 👇
I've spent the last 4 years building products in fintech and fast-paced startup environments—including as a founding engineer at a Y Combinator-backed company.
Now, I'm eager to connect with others who share my drive for building ambitious products and making an impact together!
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ah, also.. i'm building a start-up. join the waitlist👇
My skills
- Let's be honest - ChatGPT 😄
- Java ☕️
- Spring 🍃
- Python 🐍
- FastAPI/Django
- Core Data Python Libs
- Scores of AWS Services [or Vercel when I feel lazy 😇]
- Relational DBs
- MongoDB/Redis
- TypeScript
- React (w/h NextJs 👀)
- TailwindCSS
- Supabase
Experience & Education
Founding Engineer
02/2025 - 05/2025
Mandel AI | YCombinator, Sofia, Bulgar ia
Helped the business acquire its first 3-4 B2B clients by hitting tough deadlines with rapid code and feature iteration. Optimized AI extraction pipelines to fetch and persist data with 200% improvement in accuracy and reliability. Built production-ready supply chain AI agent with logging & observability, memory, human in the loop, and tooling.
Senior Software Engineer
07/2024 - 02/2025
Tide Platform, Sofia, Bulgaria
Designed and built scalable APIs for PnL Reports & Cash Balance Insights, used by 500k+ members. Enabled API Documentation across all teams and 400+ micro-services. Ensured alignment of team solutions with domain architecture, enhancing project consistency and efficiency.
Software Engineer (MVP 🏅)
01/2023 - 06/2024
Tide Platform, Sofia, Bulgaria
Worked across 3 different teams in the span of 6 months to help leadership hit annual targets for the domain. Scaled the invoicing product to (now 100k+) users in India & Germany. - Recognized as MVP!
Junior Software Engineer (MVP 🏅)
04/2022 - 12/2022
Tide Platform, Sofia, Bulgaria
Received an 'Exampler' award in recognition of abilities within 7 months of joining. Saved all 200+ backend engineers tens of hours of testing through an automated script. - Recognized as MVP!
Intern Software Engineer
09/2021 - 04/2022
Axway, Sofia, Bulgaria
Worked on improving and maintaining the 'SecureTransport' core product at the company, used by tens of Fortune 500 companies.
Bachelor's in Computer Science
2020-2024
Techincal University of Sofia, Bulgaria
Successfully finished my bachelor's in computer science. Found a job after my 1st year & worked for the last 3 years along side uni!
Side Work / Personal Projects
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Contact me
Fill-in this 👇 form & lets work together on something great 🚀