Edwin Beshel Ayabie

Experience

1. Back End Developer & Data Scientist · Synterra Digital

   Jul 2026 - present

   Dual backend and data role at an early-stage AI company, building the data and API layer behind its product ahead of public launch.

2. Backend Engineer · SCIDaR

   Feb 2026 - Jul 2026

   Contract backend engineer at Solina Centre for International Development and Research (SCIDaR), a Nigerian health and development research organization that has run 15+ transformation programs across 15+ states since 2017. Rebuilt the API layer behind an internal program-coverage tool, cutting response times by over 80% to consistently under 100ms, and built an ETL pipeline feeding downstream program analysis.

3. Backend Engineer · AuvraAI

   Nov 2025 - Aug 2026

   Built backend pipelines and pathway logic for an AI voice-call and customer-support platform, powering virtual agents that handle live calls.

4. Backend Developer · Ashinity Synergy

   Jul 2025 - Sep 2025

   Backend for Moodcraft, an AI mental-health companion app. Engineered and maintained a RAG pipeline and LLM integration for mood classification and personalized response generation, plus secure ingestion pipelines for sensitive user data and the FastAPI inference services behind the app, alongside a reported 40% lift in user engagement.

5. Lead Backend Engineer · Tiango Logistics (Yumbarn)

   May 2025 - Dec 2025

   Backend lead for Yumbarn, Tiango Logistics' food ordering and delivery platform. Architected and deployed the core REST API serving the customer, vendor, and rider apps, built real-time order fulfillment with geolocation-based rider assignment and payment processing, and introduced Redis caching that cut API latency by over 25% at 10,000+ daily orders.

6. Technical Lead · AET Technologies

   Mar 2025 - present

   I built the backend behind AET's nationwide airtime-based rewards platform: consent and fraud checks on every entry, holding up at thousands of subscriptions a minute across 5M+ users served. Now leading engineering across it — reviewing architecture and performance decisions, mentoring 10+ junior developers in Python, JavaScript, and distributed systems (a reported 30% productivity lift on critical projects), resolving production incidents in background task execution, API failures, and database performance, and communicating technical risk to senior stakeholders.

7. Backend Engineer · Techmakeeasy (NectaBills / NectaSwap)

   Jan 2025 - Apr 2026

   Backend engineer at Techmakeeasy on two products: NectaBills (bills, airtime, eSIM, transfers, savings) and NectaSwap (crypto-to-Naira swap plus NGN/USD virtual cards), sharing the same wallet and transaction infrastructure. Implemented idempotent billing and transaction workflows preventing duplicate charges across 100,000+ monthly transactions, built async payment pipelines on Celery and RabbitMQ for execution, retries, and reconciliation, real-time card authorization, and integrated multiple VAS aggregators and payment providers over REST and SOAP.

8. Backend Developer · AET Technologies

   Apr 2024 - Feb 2025

   Designed and built USSD, SMS, and web APIs for AET's airtime-based rewards platform, including the consent and fraud-check gateways users pass through before entry, mobile-network DCB (direct carrier billing) integrations, external aggregator and ISP integrations over REST and SOAP/XML, and the billing logic behind those workflows.

9. Lead Backend Developer · Sefy Technologies (Paysefy)

   Feb 2024 - Nov 2024

   Built the backend end-to-end for Paysefy, a fintech bills-payment platform: architecture, implementation, and technical documentation covering system design and backend standards, working closely with the frontend team on API integration.

10. Lead Backend Developer · Zeelpay

    Feb 2024 - Jan 2025

    Backend for Zeelpay, a hybrid Web2/Web3 fintech app for bill payments, airtime/data top-up, gift-card trading, and Bitcoin/USDT trading with NGN/USD virtual cards on real-time authorization. Designed the services supporting both the cryptocurrency and bills-payment sides of the product and enforced code quality through automated testing and review.

11. Backend Developer · Gexipay Technologies

    Nov 2023 - Jan 2025

    Built the full backend for Gexipay, a consumer fintech app for bill payments, bank transfers, crypto and gift-card trading, virtual cards with real-time authorization, and betting-wallet funding. Implemented secure, compliant transaction-processing workflows, optimized database performance through indexing and query refactoring, and integrated third-party services over JSON and XML APIs.

12. Backend Developer · Tobopay

    Nov 2023 - Dec 2024

    Built the backend for Tobopay, a Nigerian payments app, end-to-end and solo: wallet and ledger, bills, airtime-to-cash, Tcash vouchers, and NGN/USD virtual cards with real-time POS/ATM authorization, plus the infrastructure and deployment pipeline underneath it.

13. Backend Developer · Shazz Tech (Shazzy)

    May 2023 - Mar 2025

    Backend for Shazzy, a crypto wallet app for buying/selling tokens and spending directly via card. Built the crypto wallet and card functionality, including real-time card authorization, and improved database performance through query optimization.

14. Backend Developer · Zappy Global Technology

    May 2023 - Jan 2025

    Backend engineer on Zappy, a Nigerian payments app for instant bank transfers and a dual NGN/USD wallet with real-time FX conversion and airtime-to-cash.

15. Backend & Web Developer · early career · Various — internships & freelance

    2020 - 2023

    Started in freelance web design and blogging before moving into Python backend development through internships and small teams: HNG Internship, KodeCamp, Zuri Team, Sidehustle, and Workshopapps, plus early freelance backend work for Naijabase Media.

Projects

• Yumbarn · lead backend engineer · Food ordering and delivery platform: core REST API, geolocation rider assignment, and Redis-cached endpoints handling 10,000+ daily orders.
• NectaBills · backend engineer · Fintech app for bills, airtime, eSIMs, and savings: idempotent billing across 100,000+ monthly transactions on Celery/RabbitMQ pipelines.
• NectaSwap · backend engineer · Crypto-to-Naira swap app from Techmakeeasy with NGN/USD virtual cards for global spending, on shared wallet and transaction infrastructure with NectaBills.
• Moodcraft · backend developer · AI mental-health companion: RAG pipeline and LLM integration for mood classification and personalized emotional support.
• Zeelpay · lead backend developer · Hybrid Web2/Web3 fintech app: bills, airtime, gift-card trading, and BTC/USDT trading with NGN/USD virtual cards.
• Shazzy · backend developer · Crypto wallet app: buy/sell tokens and spend directly via card, in-store and online.
• Gexipay · backend developer · freelance · Consumer fintech app: bill payments, bank transfers, airtime-to-cash, crypto and gift-card trading, virtual cards, and betting-wallet funding.
• Paysefy · lead backend developer · Fintech bills-payment platform; built the backend end-to-end as lead backend developer.
• Tobopay · backend developer · Nigerian payments app: wallet, bills, airtime-to-cash, Tcash vouchers, and NGN/USD cards with real-time authorization, built end-to-end solo.
• Waitstream · backend developer · freelance · AI-powered waitlist-management platform for streamlining bookings and reducing no-shows, built solo freelance.
• Gxpanse · backend developer · freelance · A social media and marketplace platform merged into one product; built the backend freelance.