Hi, I'm Winfred Mawuli Agbotey Backend Engineer & Salesforce Administrator

Backend Engineer with 3+ years of experience specializing in designing and building scalable, performant, and maintainable backend systems. Currently serving as an Instructor & Backend Engineer, mentoring the next generation of developers while building enterprise solutions.

Get In Touch View Work
☕
Java
⚡
Spring Boot
🚀
Node.js
☁️
Salesforce

About Me

Professional Summary

Backend Engineer with 3+ years of experience specializing in designing and building scalable, performant, and maintainable backend systems. Proficient in Java (Spring Boot), Node.js, and TypeScript, with hands-on expertise in microservices, cloud-native development, and backend architecture.

Successfully led and contributed to key projects such as an Assessment Platform, Event Management System, and Mentorship Tracker. Certified Salesforce Administrator with experience in Apex development and system integration.

3+ Years Experience
11 Trainees Mentored
50+ Code Reviews
100% Completion Rate

Technical Skills

Technologies I work with

Languages

  • Java
  • Apex
  • TypeScript
  • JavaScript

Frameworks

  • Spring Boot
  • Node.js/Express

Databases

  • PostgreSQL
  • MySQL
  • MongoDB
  • AWS DynamoDB

Testing

  • JUnit
  • JMeter
  • Mocha/Chai
  • Supertest

Version Control

  • Git
  • GitHub
  • GitLab

Tools & Platforms

  • Docker
  • Jenkins
  • Kubernetes
  • Salesforce (Admin & Dev)

Project Management

  • Jira
  • Trello
  • Confluence

Other Skills

  • Agile/Scrum
  • Code Reviews
  • Mentorship

Work Experience

My professional journey

May 2025 - Present Current

Instructor & Backend Engineer

AmaliTech

  • Managing and supporting 11 backend trainees through their learning journey, providing daily guidance, performance tracking, and one-on-one technical assistance
  • Delivering structured backend engineering lectures covering Java, Spring Boot, REST APIs, Git, testing, and development best practices
  • Designed and assessed 6+ real-world project-based tasks, simulating industry development environments
  • Mentored 5 high-potential trainees, achieving a 100% completion rate in core backend modules and personal code deliverables
  • Facilitated weekly firechat sessions (12+ to date) on career growth, engineering culture, productivity tools, and industry standards
  • Conducted over 50+ personalized code reviews and milestone evaluations, leading to a 40% improvement in code quality and best practice adherence
October 2023 - Present

Backend & Salesforce Developer

AmaliTech

  • Designed and implemented Salesforce Apex web services to integrate with a CMS, resulting in enhanced system interoperability
  • Built backend features using Spring Boot and Node.js to support scalable APIs and service communication
  • Developed custom objects, flows, and triggers to automate business logic in Salesforce
  • Mentored five junior developers in both Java and Salesforce, accelerating team-wide learning and delivery
November 2022 - September 2023

Backend Engineer

AmaliTech

  • Engineered event-based backend APIs using Node.js and TypeScript for a location-driven event platform
  • Implemented location-aware search features with Google Geo-location API, increasing relevant event discovery by 40%
  • Refactored legacy backend code and enhanced logging systems, reducing error rates by 30% and improving maintainability
  • Collaborated with internal teams to resolve 40+ backend tickets, supporting smoother QA and frontend integration across sprints

Selected Projects

Key projects I've worked on

🏆

Assessment Platform

A cloud-based system for evaluating candidate performance with detailed analytics.

  • Developed the backend using Java and Spring Boot with a microservices architecture
  • Integrated Kafka for event streaming, Redis for caching, and DynamoDB for fast-access data storage
  • Implemented a performance scoring engine to support real-time analytics
  • Designed scalable modules for candidate tracking, assessment history, and feedback
Java Spring Boot Kafka Redis
☁️

Salesforce Integration Service

A CMS integration built with Apex and Salesforce APIs to improve enterprise workflow efficiency.

  • Created custom Apex REST classes to handle secure CMS-to-Salesforce data exchange
  • Used triggers and flows to sync records and automate Salesforce objects in real time
  • Reduced API processing time by optimizing SOQL queries and leveraging platform caching
  • Improved maintainability by implementing test classes and achieving over 90% test coverage
Apex Salesforce REST API
📍

Event Management System

A platform for discovering and promoting events with real-time location updates.

  • Built RESTful APIs using Node.js and TypeScript to manage events, users, and interactions
  • Integrated Google Maps API to support search-by-location functionality
  • Implemented Firebase Cloud Messaging (FCM) to enable push notifications for live event updates
Node.js TypeScript Google Maps Firebase

Education & Certifications

Academic background and professional certifications

🎓

Higher National Diploma

Information Technology

Takoradi Technical University, Ghana

2022

🏆

Certified Salesforce Administrator

Official Salesforce certification demonstrating expertise in administration and configuration

💡

Digital Innovation Programme

Advanced program focusing on digital transformation and innovation strategies

Let's Connect

Get in touch for opportunities and collaborations

📧

Email

winfredagbotey20@gmail.com
📱

Phone

+233 554704302
💼

LinkedIn

linkedin.com/in/winfred-mawuli
🌐

Website

Portfolio Website