Open to new opportunities

Senior Backend Engineerarchitecting scalable AI & SaaS platforms.

Results-driven Backend and Full Stack Engineer with 9+ years of experience designing and delivering enterprise SaaS platforms, FinTech APIs, and AI-driven systems. Proven success in architecting scalable, secure, and high-performance cloud infrastructures.

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Enterprise SaaS
AI-Driven Systems
FinTech & Cloud
Isaac Gyasi Nimako

Isaac Gyasi Nimako

Senior Backend Engineer · Full Stack

9+ years building enterprise SaaS platforms, FinTech APIs, and AI-driven systems.

PrimaryC# · ASP.NET
Backend.NET · Node · Python
CloudAWS · Azure
Accra, Ghana
Microservices

About Me

Results-driven Backend and Full Stack Engineer with 9+ years of experience designing and delivering enterprise SaaS platforms, FinTech APIs, and AI-driven systems. Proven success in architecting scalable, secure, and high-performance cloud infrastructures using C#, ASP.NET Core, and modern distributed systems.

Skilled in microservices, multi-tenancy, and DevOps practices, with a strong track record of improving system efficiency, reliability, and team productivity. Experienced in building event-driven architectures, implementing OAuth2 security, and deploying scalable infrastructure on AWS and Azure.

I value thoughtful communication, mentorship, and consistent, incremental improvement. I am most effective in environments where ownership, autonomy, and quality are prioritized.

EXPERIENCE

9+ years

Building enterprise SaaS platforms, FinTech APIs, and AI-driven systems.

SPECIALIZATIONS
  • Enterprise SaaS
  • Microservices & Multi-tenancy
  • AI-Driven Systems
  • FinTech & Payment Systems
APPROACH

Pragmatic, test-driven, and performance-aware, with strong focus on observability.

WORKING STYLE

Autonomous, collaborative, and comfortable driving projects from design to launch.

Work Experience

Lead Backend Engineer

Pilgrim Consulting Group (TechHalo.ai)Jan 2023 – Present

Accra, Ghana

  • Architected middleware backend engine using ASP.NET Zero to integrate frontend clients with AI engines, implementing multi-tenancy and RBAC
  • Designed REST APIs with OAuth2 security and automated document ingestion pipeline for enterprise AI capabilities
  • Built event-driven microservices with RabbitMQ and Redis, reducing latency by 30%
  • Deployed scalable infrastructure on AWS (EC2, S3, RDS) with Dockerized services

Full Stack Developer

TGL Systems (ECG Vending System)2021 – 2022

Accra, Ghana

  • Developed high-volume transaction APIs for electricity vending systems processing thousands of transactions daily
  • Implemented secure payment integrations via Azure APIM and automated reconciliation workflows
  • Reduced API response time by 40% through backend optimization and caching
  • Deployed scalable Azure App Services and CI/CD pipelines via GitHub Actions

Senior Software Engineer

Axis Pension Group (Primus-Tech)Jun 2020 – 2021

Accra, Ghana

  • Designed and developed Loan Management System automating approvals and repayments
  • Launched USSD pension access system serving over 100,000 users with 99.9% uptime
  • Mentored junior developers, improving code quality and delivery timelines by 25%

Senior Software Engineer

CediPay / Hisense GhanaOct 2019 – Oct 2021

Accra, Ghana

  • Engineered FinTech backend enabling mobile money transfers and merchant payments
  • Integrated Firebase for real-time data and push notifications across merchant platforms
  • Strengthened payment security with PCI DSS compliance measures

Key Skills

A selection of technologies and tools I work with regularly.

Backend

C#ASP.NET CorePHPNode.jsPythonREST / gRPC

Frontend

React.jsNext.jsJavaScriptHTML5 / CSS3Tailwind

Databases & Data

MSSQLPostgreSQLMySQLMongoDBRedisRabbitMQKafka

DevOps & Cloud

AWSAzureDockerCI/CDGitHub ActionsTerraform

Core Proficiencies

self-assessed
C# / ASP.NET CoreAdvanced
Microservices & Distributed SystemsAdvanced
AWS & Azure CloudAdvanced
React.js & FrontendIntermediate
Database Design & SQLAdvanced
Mentoring & technical leadership
Test-driven development

Recent Projects

TechHalo.ai
AI Platform

TechHalo.ai

Enterprise-grade AI-powered knowledge management platform with multi-tenant architecture, automated workflows, and document ingestion pipeline. Features intelligent AI Chatbot and AI-Assisted Voice Processing System for insurance operations.

ASP.NET CoreRabbitMQRedisAWS
ECG Electricity Vending System
FinTech

ECG Electricity Vending System

Mission-critical utility payment solution for prepaid and postpaid electricity purchases. Integrated with multiple payment options, vendor APIs, and automated reconciliation system for real-time transaction validation.

C#Azure APIMAzure App ServicesGitHub Actions

Education

B.Tech. Telecommunication Engineering

Koforidua Technical University

2015 – 2017

Specialized in telecommunications systems and network engineering

B.Sc. Computer Science

Koforidua Technical University

2011 – 2015

Foundation in computer science principles, algorithms, and software engineering

Get In Touch

I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.

Location

Accra, Ghana