
Victor Jonah
Senior Software Engineer | Node.js, TypeScript
Salary / Daily rate
Berlin, Germany
Freelance, open to permanent contract
Skills
Languages
About me
Intro
Senior Backend Engineer with 7+ years building scalable systems for fintech and proptech across Africa and Europe. Reduced tenant verification from days to 10 seconds using AWS OCR, handled 40k+ concurrent streams, and built reusable payment libraries cutting integration time by 35%. Expert in Node.js, TypeScript, and distributed systems.
Work experience
Senior Backend Engineer
Bujeti (YC W23)
Jan 2025 - Present
1 year 10 months
- Developing comprehensive tax management system for African businesses using Bujeti. - Implemented Slack integration for seamless expense notifications and approvals. - Building a payroll for African businesses using Bujeti - Implemented Google Sheets integration for syncing of transactions within thew business to customers' sheets
Senior Software Engineer
Mietz
Feb 2023 - Jan 2025
2 years
Berlin, Germany
Developed an OCR solution on AWS Lambda, reducing tenant verification from days to 10 seconds max. Created a scheduling system for tenant-landlord apartment viewings, boosting booking efficiency by 25%. Designed a shortlisting service for property owners, streamlining tenant approvals by 30%.
Senior Backend Engineer
MeekFi
May 2023 - Jan 2024
9 months
Godomey, Benin
In my role as a Senior Backend Engineer at MeekFi, I led the migration of a USSD service from PHP to Typescript, enabling improved performance and scalability. Additionally, I developed a cardless ATM withdrawal system, enhancing user convenience and security. By engineering the Paycode generation workflow within the mobile wallet application, I ensured seamless integration with ATMs, contributing to a more efficient cash withdrawal process.
Software Engineer
Edvise
Feb 2023 - Aug 2023
7 months
Palo Alto, CA, USA
Orchestrated robust supervised learning frameworks with Cloudflare Workers alongside TypeScript; achieved a notable increase in the precision of AI-generated outputs, realizing an enhancement in task accuracy of 25%. Enhanced backend performance through implementing advanced caching systems with Cloudflare KV; achieved a remarkable 30% reduction in API response time while maintaining system reliability under heavy load conditions. Automated testing environments using Docker Compose and wrote end-to-end test cases with Jest, improving code reliability by 40%.
Software Engineer
47Billion
May 2022 - Dec 2022
8 months
Santa Clara, CA, USA
Optimized messaging queues with NATS Streaming, handling 40,000+ concurrent streams with low latency. Built a reusable payment library for Stripe, Braintree, and PayPal, cutting integration time by 35%. Streamlined 100% of authentication processes with a custom library using TypeScript and Keycloak.
Software Engineer
Crenet
Aug 2019 - May 2022
2 years 10 months
Lagos, Nigeria
Delivered APIs for an Expense and Requisition Management System, improving workflows by 40%. Enhanced data management for a Hospital Management System with robust endpoints, reducing workload in the Hospital by 90%. Established microservices for a Protocol Management System with RabbitMQ, boosting efficiency by 30%.
Software Engineer
CYBERSPACE Nigeria
Sep 2018 - Aug 2020
2 years
Victoria, PE, Canada
Placed in a Fintech unit with Senior Software Architects and developers. Designed backend solutions with Node.js, C#, and Docker, improving reliability by 20%. Shortened development cycles by 15% using agile and SDLC best practices. Wrote CI workflows, enhancing deployment consistency from 0-100.
Software Engineer
Hotels.ng
Aug 2017 - Oct 2018
1 year 3 months
Initiated a file-sharing application (XShare) using Node.js and PostgreSQL, supporting 1,000+ daily transactions. Implemented secure payment gateways that streamlined user transactions, resulting in a 40% reduction in transaction-related customer inquiries, enhancing overall user satisfaction and trust in the platform. Improved file upload services, boosting performance and user satisfaction by 30%.
Education
University of Uyo
Bachelor of Science - BS
2015 - 2020
5 years