Hi, my name is

Tochukwu Nwankwu.

I engineer resilient, distributed systems that power products at global scale.

I'm a software engineer with 6+ years of experience architecting high-performance microservices for fintech and gaming. I specialize in regulatory compliance systems, real-time data streaming, and Kubernetes-orchestrated infrastructure that serves millions of users across 10+ countries.

Available for opportunities ๐Ÿ“ Lagos, Nigeria โœ‰ tochukwuchinedu21@gmail.com
01.

About Me

I'm a results-driven Software Engineer with over six years of experience architecting high-performance, scalable microservices for fintech and gaming industries.

My work focuses on building regulatory compliance systems that process millions of transactions across 10+ countries, delivering 99.9% platform reliability through advanced DevOps practices. I'm an expert in the Java and Spring Framework ecosystem with a proven track record of optimizing system performance, reducing downtime, and leading cross-functional teams.

When I'm not deep in distributed systems, I'm exploring AI/ML, cloud computing, and the next generation of gaming infrastructure.

6+
Years experience
10+
Countries served
02.

Technical Skills

{ }

Languages

Java TypeScript JavaScript
โš™

Frameworks

Spring Framework Spring Boot JPA Hibernate gRPC
โ–ค

Databases

PostgreSQL MySQL TiDB Redis
โ‰‹

Messaging & Streaming

Apache Kafka RabbitMQ
โ˜

DevOps & Cloud

Kubernetes Docker Terraform Jenkins GitHub Actions GitLab CI Azure Lens Telepresence
โ—ˆ

Methodologies

Microservices RESTful APIs CI/CD Agile/Scrum
03.

Where I've Worked

Software Engineer @ pawaTech
March 2022 โ€“ Present ยท Tallinn, Estonia
  • Architect and maintain regulatory compliance systems delivering millions of user betting activities and financial transactions to government regulators across 10+ countries, ensuring 100% compliance with regional gaming regulations.
  • Implemented real-time data streaming with Apache Kafka, transmitting betting data to regulatory bodies with sub-second latency under peak loads.
  • Designed queue-based systems using RabbitMQ and asynchronous job processing, handling 50,000+ betting transactions per minute during major sporting events.
  • Developed gaming platform features (sports betting, virtual events, live games) using Java, Spring Framework, and Spring Boot across multiple markets.
  • Scaled Kubernetes clusters with Lens and Telepresence, implementing auto-scaling for 99.9% reliability during traffic spikes.
  • Optimized microservices and APIs through caching and indexing, handling 500,000+ concurrent users with zero downtime.
  • Maintained 98% uptime for critical services via Prometheus, Grafana, and rapid incident response protocols.
Software Engineer @ Phastmoney
May 2021 โ€“ March 2022 ยท Lagos, Nigeria
  • Designed and built scalable financial APIs using Spring Boot, serving 10,000+ transactions daily.
  • Integrated Okra API for direct debit functionality with a 99.5% success rate.
  • Developed payment gateway integrations with Paystack and Jumia, including automatic retry logic and reconciliation.
  • Created Swagger and Confluence documentation, reducing developer onboarding time by 50%.
  • Deployed and scaled microservices on Kubernetes with automated health checks and rollback capabilities.
  • Established Jenkins and GitLab CI pipelines, reducing deployment time from 2 hours to 15 minutes.
Software Engineer @ Genesys Tenece
June 2020 โ€“ April 2021 ยท Enugu, Nigeria
  • Led a team of 3 engineers designing an inventory management application for a retail chain with 15+ locations.
  • Built store management app with Spring Boot and PostgreSQL, reducing stock discrepancies by 40%.
  • Developed a recruitment portal processing 500+ applications monthly.
  • Mentored 2 junior developers on best practices, code quality, and Spring fundamentals.
Software Engineer @ HydrogenHR
January 2020 โ€“ May 2020 ยท Lagos, Nigeria
  • Built scalable RESTful APIs for an HR platform serving 500+ enterprise clients using Spring Boot and PostgreSQL.
  • Conducted code reviews for a team of 5+ developers to enforce quality and best practices.
  • Resolved 50+ critical bugs within the first 3 months through systematic debugging.
  • Improved API response times by 40% via query optimization, indexing, and a Redis caching layer.
  • Reduced system downtime by 30% through proactive bug fixes and monitoring.
Software Engineer @ FCMB (First City Monument Bank)
February 2020 โ€“ June 2020 ยท Lagos, Nigeria
  • Created Swagger documentation for 20+ banking API endpoints.
  • Implemented OAuth 2.0 and JWT authentication, achieving 100% audit compliance with zero breaches.
  • Reduced API latency by 35% via connection pooling, indexing, and query optimization.
04.

Key Projects & Achievements

// flagship

Regulatory Compliance Platform

Architected an end-to-end compliance system processing 10M+ transactions monthly across 10 countries. Real-time streaming with Kafka, achieving 99.99% data accuracy.

JavaKafkaSpring BootKubernetes
// infrastructure

High-Availability Gaming Infrastructure

Designed Kubernetes-orchestrated microservices supporting 100,000+ concurrent users with auto-scaling, cutting infrastructure costs by 25%.

KubernetesMicroservicesTerraform
// payments

Multi-Gateway Payment Integrations

Integrated Paystack, Jumia, and Okra APIs for 10,000+ daily users, achieving a 99.5% transaction success rate with automated retries and reconciliation.

Spring BootPaystackOkraREST
// delivery

CI/CD Pipeline Modernization

Established Jenkins and GitLab CI pipelines that reduced deployment time from 2 hours to 15 minutes across staging, test, and production environments.

JenkinsGitLab CIDocker
05.

Education & Certifications

2015 โ€” 2019

B.Sc. Computer Science

Nnamdi Azikiwe University, Awka, Nigeria

CERTIFIED

Microsoft Azure Fundamentals

Cloud computing foundations: core Azure services, security, pricing, and governance.

06.

Beyond the Code

{ ai }

AI & Machine Learning

Tinkering with LLMs, agentic systems, and the engineering challenges of running them at scale. Always reading papers, breaking things, and asking how this stuff will reshape backend work.

LLMs Agents MLOps
โ˜ cloud

Cloud & DevOps

Side projects on Kubernetes, container orchestration, and chasing the elegant abstraction between bare metal and serverless. Infra is half the fun.

K8s Docker IaC
โ™ช music

Music

Afrobeats, hip-hop, and lo-fi on repeat while I code. Curating playlists is a craft of its own.

๐Ÿ“– reading

Tech & Sci-Fi

From Designing Data-Intensive Applications to The Three-Body Problem โ€” systems thinking applied to both software and the universe.

โšฝ football

Football

Lifelong fan. Match days are sacred. Tactical analysis scratches the same itch as debugging a distributed system.

07. What's next?

Let's build something.

I'm always open to interesting opportunities, technical conversations, or just a quick chat about distributed systems. My inbox is open โ€” drop me a line.