vesmirov
Fintech Backend Engineer
Backend engineer with 4+ years of experience, specializing in billing and payment systems at scale. Core expertise in designing idempotent transaction processing pipelines, integrating payment providers across regions, and implementing tax calculation and settlement systems. Experienced in event-driven architecture, payment reconciliation, and high-availability distributed systems. Led cross-functional projects involving accounting, ERP, and compliance stakeholders.
Experience: 5 years
Yearly salary: $78,000
Hourly rate: $45
Nationality: 🌏 Remote
Residency: 🌏 Remote
Experience
Software Developer → Lead, Backend for Data Science
Leadzai 2022 - 2024
Built REST and GraphQL APIs for a SaaS marketing automation platform, integrating with Microsoft, Facebook, and Google advertising platforms. Migrated the AI content generation pipeline from GPT-3 to GPT-4, refactoring the integration layer and optimizing prompt engineering for ad copy creation. Decomposed a monolithic NLP service into 11 microservices (Docker/Kubernetes/Helm), enabling independent scaling and deployment. Promoted to lead; increased test coverage of the core Data Science module ~9x; sole maintainer of the NLP service.
Backend Developer
G-Core 2021 - 2022
Developed and maintained REST APIs for a global CDN platform (140+ points of presence across 6 continents), implementing content distribution logic and caching layer optimizations. Built an API integration layer for a major Asian technology company, delivering an MVP that secured an enterprise partnership contract.
Skills
docker
fintech
kubernetes
postgres
python
redis
english
russian