Victor Jonah

Senior Software Engineer | Node.js, TypeScript

Salary / Daily rate

Berlin, Germany

Freelance, open to permanent contract

Skills

NodeTypescriptBackend Development

Languages

English

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.

Links

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

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