Sabi
Mantock
Software Engineer

React · Next.js · TypeScript · Node.js.
Building production web applications and reusable interfaces that make everyday workflows simpler.

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Work

3 projects
01

Billy

A full-stack marketplace for discovering and booking billboard and property advertising space across Ghana, from catalogue browsing through booking.

ReactNode.jsMongoDBCloudflare R2
Collaborative projectView project ↗
02

Dkleener

A responsive website for a cleaning business, bringing residential, commercial, industrial, and specialist services into one clear experience. Built with reusable components, service discovery, and a guided enquiry form.

Next.jsReactTypeScriptTailwind CSS
Current projectView project ↗
03

DevComm1

Current project
React·Next.js·TypeScript·JavaScript·Node.js·Redux Toolkit·React Query·Tailwind CSS·HTML5·CSS3·Python·Ruby on Rails·MySQL·PostgreSQL·Git·GitHub·Azure DevOps·CI/CD·Prometheus·Grafana·React·Next.js·TypeScript·JavaScript·Node.js·Redux Toolkit·React Query·Tailwind CSS·HTML5·CSS3·Python·Ruby on Rails·MySQL·PostgreSQL·Git·GitHub·Azure DevOps·CI/CD·Prometheus·Grafana·

Experience

Sep 2023 – Nov 2024

Adaptive Computer Solutions Ghana Limited

Operational Support Engineer

  • Resolved 20+ production API validation defects, preventing data corruption and safeguarding over £50,000 in monthly revenue.
  • Supported CI/CD pipelines and Azure DevOps Server across 15+ production deployments, including environment configuration and rollbacks.
  • Used Prometheus and Grafana to investigate 10+ incidents; built a root-cause knowledge base that reduced mean time to resolution by 25%.
  • Collaborated with backend and DevOps engineers on load testing and error-budget reviews, helping improve uptime from 98.5% to 99.5% over six months.

Sep 2021 – May 2023

Black Labs

Frontend Developer

  • Built a reusable React and TypeScript component library adopted by 3+ production applications serving 2,000+ active users, reducing frontend feature development time by an estimated 40%.
  • Integrated Node.js REST APIs handling 10,000+ daily calls and resolved 50+ UI and data-flow defects across agency, rider, and admin dashboards.
  • Streamlined courier onboarding from 45 to 18 minutes and increased completion rates by 35%.
  • Built real-time dashboards and automated task allocation, reducing assignment time from 12 to 8 minutes and improving driver utilisation by 20%.
  • Delivered 12+ releases over two quarters within an eight-person Agile team, owning 10+ production features from implementation to release with no critical post-release bugs.

Oct 2018 – Sep 2020

Ent Transport

Operations Manager

  • Managed a two-truck fleet and seven personnel, applying structured problem-solving to daily operations.
  • Implemented vehicle tracking and trip-data systems to optimise fleet planning and deliver measurable savings in maintenance costs.

Education

2023

Microverse

Computer Software Engineering Certification

2017

Ghana Technology University College

Diploma in Information Technology