Rangel Rangelov
@rangelrangelov
I build AI product features, experiments, and full-stack growth systems that move revenue.
BulgariaWhat I'm looking for
At Enhancv, I build full-stack AI products, pricing experiments, retention flows, and conversion tracking. I built an in-editor AI assistant serving 44–52k monthly active users and cut cancellation-flow cancellations from 92.2% to 85.4%, increasing revenue by 8.3% against a randomized control.
I’ve also led React Native development for E.ON Home, a 100K+ download app, and grew at Rubber Duck from its first engineering hire to engineering manager of a 20-person office. I bring hands-on React, TypeScript, Node.js, experimentation, and LLM integration work alongside a practical view of scope and delivery.
Experience
Work history, roles, and key accomplishments
Senior Product Engineer
Enhancv
Mar 2025 - Present (1 year 6 months)
Built the in-editor AI assistant end to end, held 44-52k monthly active users, and cut cancellations from 92.2% to 85.4% with a retention intervention. Shipped LinkedIn Coach alone and owned the pricing and checkout experiment stream.
Engineering Manager
Rubber Duck
Jan 2022 - Feb 2025 (3 years 1 month)
Grew from first engineering hire to engineering manager of a 20-person office; built an internship program whose interns still staff the team.
Lead React Native Developer
E.ON Group
Jan 2024 - Jan 2025 (1 year)
Led development of the E.ON Home app (100K+ downloads on Google Play) and its whitelabel variants including E.ON Next Home (UK); owned releases of all three apps.
Full-Stack Engineer
ProSiebenSat.1
Jan 2023 - Jan 2024 (1 year)
Led the development effort on a design system used across the P7S1 group's brands, including its TV websites and sports portal.
Software Engineer
Knowit
Jan 2021 - Jan 2022 (1 year)
Delivered client projects in a dedicated team for the Finnish consultancy using React, TypeScript, GraphQL, Next.js, and headless WordPress.
Team Lead
Rubber Duck
Jan 2021 - Jan 2022 (1 year)
Led a team of engineers, contributing to the growth of the company from first hire to a 20-person office.
Senior Engineer
Rubber Duck
Jan 2020 - Jan 2021 (1 year)
Worked as a senior engineer, contributing to the company's growth and technical projects.
Senior Software Engineer
Urban Sports Club
Jan 2019 - Jan 2021 (2 years)
One of six engineers through hypergrowth; built the B2B portal used by all partners using React, Nest.js, GraphQL, and PostgreSQL.
Front-end Engineer
Rubber Duck
Jan 2017 - Jan 2020 (3 years)
Started as the first engineering hire and contributed to the company's growth.
Software Engineer
Siili Solutions
Jan 2017 - Jan 2018 (1 year)
Built a dashboard connecting physical post machines to a web service.
Front-end Developer
Euroweb Internet GmbH
Jun 2016 - Jan 2017 (7 months)
Built responsive websites for German-market clients; reviewed colleagues' code and designs, and led a small internship team.
Intern
Viscomp
Jan 2014 - Jan 2016 (2 years)
Interned at Euroweb's Bulgarian entity, gaining experience in web development.
Education
Degrees, certifications, and relevant coursework
University of Plovdiv
Software Technologies and Design, Software Technologies and Design
2016 - 2017
Studied Software Technologies and Design at the University of Plovdiv from 2016 to 2017.
Vocational School of Electrical Engineering and Electronics, Plovdiv
Computer Technologies, Computer Technologies
2012 - 2016
Studied Computer Technologies at the Vocational School of Electrical Engineering and Electronics in Plovdiv from 2012 to 2016.
Availability
Location
BulgariaAuthorized to work in
Salary expectations
Social media
Job categories
Skills
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