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I’m a TypeScript-first software engineer and technical lead with 4+ years of experience delivering production web and mobile systems end to end. I build and lead teams around NestJS/Prisma APIs with PostgreSQL data layers, and I ship client apps with Next.js/React and React Native—backed by solid testing with Jest and Cypress, plus CI quality gates that keep releases safe. Today I lead the client platform architecture for Tefo, a high-availability core banking system serving 100,000+ clients at Afriland First Bank South Sudan. I translate banking expert requirements into functional and technical specifications, coordinate delivery across backend and QA, and I’ve built an in-house RAG-powered code-review agent using the Anthropic API to reduce reviewer load in our multi-team monorepo. I’m also actively applying AI training from Johns Hopkins University to make engineering work faster, clearer, and more reliable—especially in FinTech and banking environments.…I’m a TypeScript-first software engineer and technical lead with 4+ years of experience delivering production web and mobile systems end to end. I build and lead teams around NestJS/Prisma APIs with PostgreSQL data layers, and I ship client apps with Next.js/React and React Native—backed by solid testing with Jest and Cypress, plus CI quality gates that keep releases safe. Today I lead the client platform architecture for Tefo, a high-availability core banking system serving 100,000+ clients at Afriland First Bank South Sudan. I translate banking expert requirements into functional and technical specifications, coordinate delivery across backend and QA, and I’ve built an in-house RAG-powered code-review agent using the Anthropic API to reduce reviewer load in our multi-team monorepo. I’m also actively applying AI training from Johns Hopkins University to make engineering work faster, clearer, and more reliable—especially in FinTech and banking environments.

Serge Junior Libock

Web Developer, Front-End Developer, Back-End Developer, +4

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I’m a TypeScript-first software engineer and technical lead with 4+ years of experience delivering production web and mobile systems end to end. I build and lead teams around NestJS/Prisma APIs with PostgreSQL data layers, and I ship client apps with Next.js/React and React Native—backed by solid testing with Jest and Cypress, plus CI quality gates that keep releases safe. Today I lead the client platform architecture for Tefo, a high-availability core banking system serving 100,000+ clients at Afriland First Bank South Sudan. I translate banking expert requirements into functional and technical specifications, coordinate delivery across backend and QA, and I’ve built an in-house RAG-powered code-review agent using the Anthropic API to reduce reviewer load in our multi-team monorepo. I’m also actively applying AI training from Johns Hopkins University to make engineering work faster, clearer, and more reliable—especially in FinTech and banking environments.…I’m a TypeScript-first software engineer and technical lead with 4+ years of experience delivering production web and mobile systems end to end. I build and lead teams around NestJS/Prisma APIs with PostgreSQL data layers, and I ship client apps with Next.js/React and React Native—backed by solid testing with Jest and Cypress, plus CI quality gates that keep releases safe. Today I lead the client platform architecture for Tefo, a high-availability core banking system serving 100,000+ clients at Afriland First Bank South Sudan. I translate banking expert requirements into functional and technical specifications, coordinate delivery across backend and QA, and I’ve built an in-house RAG-powered code-review agent using the Anthropic API to reduce reviewer load in our multi-team monorepo. I’m also actively applying AI training from Johns Hopkins University to make engineering work faster, clearer, and more reliable—especially in FinTech and banking environments.

Available to hire

I’m a TypeScript-first software engineer and technical lead with 4+ years of experience delivering production web and mobile systems end to end. I build and lead teams around NestJS/Prisma APIs with PostgreSQL data layers, and I ship client apps with Next.js/React and React Native—backed by solid testing with Jest and Cypress, plus CI quality gates that keep releases safe.

Today I lead the client platform architecture for Tefo, a high-availability core banking system serving 100,000+ clients at Afriland First Bank South Sudan. I translate banking expert requirements into functional and technical specifications, coordinate delivery across backend and QA, and I’ve built an in-house RAG-powered code-review agent using the Anthropic API to reduce reviewer load in our multi-team monorepo. I’m also actively applying AI training from Johns Hopkins University to make engineering work faster, clearer, and more reliable—especially in FinTech and banking environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

French

Fluent

English

Fluent

German

Intermediate

Work Experience

Freelance Software Engineer (Blitz - Real-Time Multiplayer Skill-Gaming Platform) at Self-directed project

February 1, 2026 - Present

Building a modular TypeScript platform (React Native Android app and Next.js 14 PWA on a NestJS backend) as the sole engineer across backend, mobile, web, and CI/CD. Architected an end-to-end system design, threat model, wallet/KYC/real-money policy compliance considerations across native and PWA surfaces, and implemented Prisma/PostgreSQL with Redis sessions/matchmaking/pub-sub and Socket.io realtime gameplay. Integrations include AWS S3, SMS OTP, and Campay mobile money (Orange Money and MTN MoMo).

Project Manager at KANU (Knowledge for Africa's New Uprising) · PKFokam Research Center

September 1, 2025 - Present

Lead end-to-end delivery of a pan-African knowledge-sharing platform connecting think-tank collaborators, researchers, and policymakers. Coordinate engineering, design, and product teams on roadmap, architecture, and UX while balancing stakeholder priorities with engineering capacity. Define and prioritize features (collaboration spaces, governance frameworks, opportunity marketplaces) based on member feedback and organizational mission.

Business & Functional Analyst at Tefo · PKFokam Research Center for Afriland First Bank

December 1, 2024 - Present

Translate banking-expert requirements into functional and technical specifications for 90+ Tefo modules (accounting engines, transactions, KYC, AML, and audit logs), aligning specifications with regulatory, accounting, and operational standards. Review UI/UX deliverables against requirements and Swagger contracts to detect discrepancies early and reduce downstream rework.

Business Analyst at Afriland First Bank / PKFokam Research Center

December 1, 2024 - Present

Collected and analyzed business requirements from banking-domain experts across risk, regulation, accounting, and teller operations; translated them into structured Business Requirements Documents and implementation-ready specifications for a large-scale Core Banking System. Documented and refined user stories and acceptance criteria covering approximately 90 functional modules (Accounting Engine, Transactions, Parties, KYC, AML, FATCA, Accounts and GL Accounts, Audit, Action Logs, Metrics, and related core banking components). Partnered with the Product Owner and Lead Analysts to validate requirements for regulatory and operational alignment. Developed and maintained data models and business rules to support accurate transaction processing and compliance reporting. Reviewed UI/UX designs against documented requirements to identify gaps early and reduce downstream rework.

Technical Lead & Software Engineer at Tefo (Core Banking System) · PKFokam Research Center for Afriland First Bank

October 1, 2023 - Present

Technical lead on Tefo, a high-availability core banking system (100,000+ clients, 24/7 SLA). Owns client platform architecture, coordinates delivery across backend and QA teams, and integrates 19 banking microservices across accounting, transactions, KYC/AML, audit, parties, products, and till operations. Architected a TypeScript/Turborepo monorepo with two Next.js apps (core-bank, superadmin) and 10 shared TS packages, enforcing a domain-driven structure across the codebase. Built an in-house RAG-powered code-review agent (@tefo/mr-review) using the Anthropic API that retrieves per-MR context from Jira, Confluence, GitLab diffs/discussions, and live Swagger contracts, then posts inline and general MR feedback. Delivered a custom accounting-schema generator using Google Blockly for major productivity gains, implemented journal-entry posting aligned with bank-modeled accounting schemas, and built an end-to-end Cypress QA suite integrated with the client stack.

Lead Frontend Engineer at Afriland First Bank / PKFokam Research Center

October 1, 2023 - Present

Led the 10-person frontend development team of a Core Banking System for Afriland First Bank South Sudan, built with Java, TypeScript, PostgreSQL, MongoDB, Spring Boot, NestJS, React, and Next.js. Implemented a custom accounting schema builder using Google's Blockly API with a schema simulation feature, increasing efficiency for adding new schemes by 350%. Mentored junior engineers, drove process experiments, and established guidelines for AI-assisted coding tools. Implemented automated QA with Cypress, boosting QA verification efficiency by over 620%.

Software Engineer at SARA by Afriland (Mobile Banking) · PKFokam Research Center for Afriland First Bank

February 1, 2023 - June 30, 2024

Owned maintenance and evolution of SARA, a React Native mobile banking app serving Côte d’Ivoire and Liberia. Designed and shipped revenue-generating features such as utility bill payments and wallet-to-wallet transfers across Orange Money, MTN MoMo, and E-Wallie. Delivered the transfer feature that reached 7,500 active users and generated roughly $30,000 USD in first-month revenue.

Mobile Engineer (Android & iOS) at Afriland First Bank / PKFokam Research Center

February 1, 2023 - June 1, 2024

Sole legacy mobile engineer maintaining and evolving the Afriland First Bank mobile application for Côte d’Ivoire and Liberia (SARA AFRILAND), ensuring stability, bug fixes, and continued feature delivery in a production banking environment. Designed and implemented new revenue-generating features including utility bill payments and wallet-to-wallet transactions supporting Orange Money, MTN Mobile Money, and E-Wallet. Led the end-to-end delivery of wallet-to-wallet transfer functionality, contributing to ~7,500 active users and generating over 18M XAF (~USD 30K) in revenue within the first month of release in Côte d’Ivoire. Improved application quality and user satisfaction through consistent bug fixes and performance improvements. Produced functional UI designs in the absence of a dedicated designer, submitting flows and screens for stakeholder review and translating approved designs into production-ready mobile features.

Web Developer at U-Empire Inc.

October 1, 2022 - October 1, 2022

Implemented the frontend for a messaging system used for customer support. Technologies included NextJS, React, TypeScript, Redux Toolkit and WebSockets.

Freelance Software Engineer at Remote

February 1, 2022 - Present

Worked with clients in Cameroon and Canada on fullstack systems. Audited and completed VerifComply (2026), a FINTRAC compliance SaaS for Canadian money services businesses (Next.js 14, Supabase, BullMQ): ran the 280-test suite for the first time, fixed a critical row-level-security recursion bug, validated client/admin portals end to end, and resolved eight defects blocking real use; also delivered missing mailer, invitation flow, and error handling. Built UFood Restaurant (customer app + operations dashboard + internal logistics tooling) and AttendanceX (event management with real-time attendance and scheduling).