Summary
Overview
Work History
Education
Skills
Certification
Timeline
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THADDEUS OKAFOR

SENIOR SOFTWARE ENGINEER
Dublin

Summary

Senior Software Engineer with 6+ years of experience designing and delivering scalable, secure, and high-performance systems across cloud-native platforms. Proven track record leading end-to-end development of complex distributed systems, incident management tooling, and privacy-compliant solutions, with deep expertise in AWS, .NET, and modern system architecture. Skilled in driving modernization efforts, optimizing legacy codebases, and implementing robust security practices to meet global compliance standards. Strong collaborator and mentor with a focus on operational excellence, system reliability, and continuous improvement to deliver business-critical software that exceeds organizational goals.

Overview

8
8
years of professional experience
6
6
years of post-secondary education
1
1
Certification

Work History

Senior Software Engineer

HubSpot
01.2025 - Current
  • Lead design and development of scalable privacy infrastructure enabling HubSpot’s global customer base to meet GDPR, CCPA, and other regulatory compliance requirements.
  • Architect and implement privacy request management systems handling account deletions, personal data exports, access requests, and user data rights at scale, ensuring reliable and timely fulfillment of legal obligations.
  • Build and maintain advanced subscription management and communication preferences tools, supporting compliant email marketing and consent management across millions of users.
  • Collaborate cross-functionally with Legal, Security, and Product teams to translate complex data protection regulations into robust, customer-facing technical solutions.
  • Drive long-term architectural decisions to ensure privacy-critical systems are performant, secure, auditable, and resilient against evolving compliance standards.
  • Provide technical leadership, mentor engineers, conduct code reviews, and promote engineering best practices in security, scalability, and data integrity.
  • Contributed directly to enhancing customer trust, reducing compliance risk exposure, and strengthening HubSpot’s global position as a privacy-first SaaS platform.

Software Development Engineer II

AWS
01.2023 - 10.2024
  • Designed and built highly scalable, secure conferencing solutions for AWS incident management platforms, leveraging SIP, SIP Media Applications, Amazon Chime SDK, and AWS Lambda to enable real-time, reliable communication during global operational events.
  • Engineered Amazon Chime SDK enhancements to support unlimited meeting duration and expanded participant capacity beyond previous platform limits, improving flexibility and scalability for high-volume conferencing.
  • Led development of incident management tooling, improving system reliability, incident response efficiency, and coordination across multiple AWS engineering teams during large-scale events.
  • Modernized legacy codebases, eliminating critical security vulnerabilities, enhancing code maintainability, and reducing operational costs by 40%.
  • Optimized CI/CD pipelines and deployment workflows, increasing deployment efficiency by 20% while embedding robust security checks throughout the release process.
  • Improved backend database performance by 30% through normalization and optimization, enhancing system responsiveness and data integrity.
  • Mentored junior engineers on secure coding practices, large-scale distributed system design, and operational excellence.

Full-Stack Software Developer

Catalyst
07.2021 - 12.2022
  • Modernized legacy C# and .NET codebases by upgrading from .NET 4.7 to .NET 6.0 LTS, reducing operational costs by 40% and improving system maintainability.
  • Normalized and optimized SQL Server databases, improving query performance by 30%, resulting in faster data access and improved system responsiveness.
  • Led end-to-end development efforts across backend (C#, .NET, SQL Server) and frontend layers, collaborating cross-functionally with project managers to deliver critical milestones on schedule.
  • Designed and implemented intuitive, user-friendly graphical interfaces, enhancing customer experience and reducing user friction.
  • Contributed to overall system scalability, reliability, and long-term platform stability through modernization and performance optimization initiatives.

Software Developer

Tokish Technologies Ltd
12.2017 - 01.2020
  • Refactored and modularized legacy codebases, aligning systems with modern development standards and achieving a 20% reduction in operating costs.
  • Collaborated across the full software development lifecycle, from requirements gathering and design to development, deployment, and production support.
  • Conducted comprehensive software testing and debugging, identifying and resolving critical issues to ensure stable and successful application releases.
  • Contributed to improved code maintainability, system performance, and long-term scalability through systematic modernization and optimization efforts.

Education

Higher Diploma - Computer Science

Griffith College Dublin
Dublin, Ireland
05.2020 - 02.2021

B.Eng - Chemical Engineering

Anambra State University
Uli, Anambra State
09.2011 - 07.2016

Skills

Software Development

Security Engineering

Cloud & Infrastructure: AWS, Azure, GCP

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Certification

AI Solutions Architecture - ELVTR

Timeline

AI Solutions Architecture - ELVTR

01-2025

Senior Software Engineer

HubSpot
01.2025 - Current

Software Development Engineer II

AWS
01.2023 - 10.2024

Full-Stack Software Developer

Catalyst
07.2021 - 12.2022

Higher Diploma - Computer Science

Griffith College Dublin
05.2020 - 02.2021

Software Developer

Tokish Technologies Ltd
12.2017 - 01.2020

B.Eng - Chemical Engineering

Anambra State University
09.2011 - 07.2016

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THADDEUS OKAFORSENIOR SOFTWARE ENGINEER