JAMES OBED SYLVESTER
Hatfield,Nigeria
Summary
Software engineer with expertise in Agile methodologies and web application development. Proficient in Java programming, full-stack development, and machine learning. Experienced in risk assessment, software design, and complex problem solving. Skilled in RDBMS, REST API integration, and cloud computing solutions with Kubernetes orchestration.
Overview
4
4
years of professional experience
5
5
years of post-secondary education
1
1
Certification
Work history
Senior Software Engineer
MUST Company
Singapore, SINGAPORE
2024.01 - 2026.02
- Developed and maintained scalable backend services using Java and Spring Boot, delivering core features supporting high-traffic applications.
- Designed microservices architecture, decomposing monolithic components into independent services and reducing deployment cycles by 40%.
Implemented event-driven architecture with pub/sub mechanisms (Kafka/RabbitMQ), enabling real-time processing and handling millions of events daily. - Optimised database queries and systems (PostgreSQL/MySQL), cutting average response times by 35% and boosting operational efficiency.
- Streamlined coding practices and refactoring efforts, increasing team productivity by 30% across multiple sprints.
- Built and tested high-quality code with JUnit and Mockito, achieving over 85% coverage and reducing production defects by 30%.
- Collaborated with stakeholders to diagnose and resolve critical issues rapidly, minimising downtime to under 1 hour per incident.
- Contributed innovative ideas in planning sessions, leading to performance enhancements like caching layers that reduced latency by 25%.
Software Engineer
Nawills Technology
Lagos, NIGERIA
2021.12 - 2024.01
- Deployed and managed production applications on AWS infrastructure using ECS, CloudFormation, and CloudWatch, achieving 99.9% uptime and reducing deployment times by 40%.
- Ensured high-performance data persistence across PostgreSQL, MySQL, and NoSQL databases with distributed caching (Redis), cutting database load by 30% and improving query response times by 35%.
Collaborated in agile cross-functional teams to deliver end-to-end features, participating in code reviews and architectural discussions that accelerated sprint delivery by 25%. - Advanced DevOps practices by automating CI/CD pipelines and infrastructure provisioning, enabling high-availability setups and decreasing manual efforts by 35%.
- Maintained detailed technical documentation for systems and processes, supporting faster onboarding and reducing knowledge transfer time for new team members by 20%.
- Managed source code repositories with Git for efficient versioning, branching, and collaboration, streamlining revisions and minimising merge conflicts across teams.
- Conducted thorough unit, integration, and performance testing, reducing pre-deployment bugs by 30% and enhancing overall application stability.
Strengthened security posture by implementing robust encryption, access controls, and secure coding practices, mitigating potential breaches, and ensuring compliance with standards.
Education
B. Engr - Engineering
Abubakar Tafawa Balewa University
Nigeria 2013.01 - 2018.01
Skills
- Core Java & Advanced Programming
- Spring Framework & Spring Boot
- RESTful APIs & Microservices
- RDBMS, NoSQL & Caching (PostgreSQL, MySQL, MongoDB, Redis)
- Cloud Computing & Kubernetes (AWS, ECS)
- Agile/Scrum Methodologies
- System Design & Complex Problem Solving
- Software Testing, Debugging & Security
Certification
- IBM Enterprise Design Thinking Practitioner 2023
- Google Developer Certificate 2022
- Scrum Fundamentals certified - Scrum Study 2022
- Project Management and Professional (PMP) 2019
PROJECTS:
MSQUARE MARKET: MSQUARE MARKET is a secure blockchain wallet and payment ecosystem enabling users to store, transfer, and trade digital assets, earn points as crypto from connected platforms (P2U shopping rewards), and pay with discounts across integrated real-economy services. With millions of users, it emphasizes easy sign-in (Google and Apple), swift global transactions via blockchain, integration with high-quality partner platforms for rewards/discounts, and supports a growing ecosystem including NFTs, real estate platforms, and cross-border payments — all powered by the MSQ token., MyBackbone App: Backbone is a secure fintech platform providing individuals with a multi-currency account for fast, global money transfers, payment links, and currency swaps — with a strong focus on Africa-connected payments and competitive rates across 170+ countries., Medical Research Forum: ISDS delivers innovative software development, secure payment solutions, healthcare management systems, and the Insta-Delivery app for scheduled online shopping, food, and short-term bookings with seamless, secure transactions., MOVIE APP: A task finder App where users can make a quick search for a list of quality earpieces and headset. Built with React, JavaScript and GitHub API.
Accomplishments
- IBM Enterprise Design Thinking Practitioner
- Scrum Fundamentals certified
References
References available upon request.
Timeline
Senior Software Engineer
MUST Company
2024.01 - 2026.02
Software Engineer
Nawills Technology
2021.12 - 2024.01
B. Engr - Engineering
Abubakar Tafawa Balewa University
2013.01 - 2018.01