Hi, I’m
Lesego Sebusi
Lead Software Architect | Cloud & DevOps Engineer
Summary
Cloud and Software Architect with 4+ years of experience designing and delivering scalable, cloud-native solutions across AWS and Azure. Skilled in DevOps automation, infrastructure as code, and enterprise solution design. Proven record of reducing costs by up to 80%, improving system uptime to 99.9%, and leading CI/CD adoption. Adept at bridging business and technical teams, driving end-to-end delivery, and mentoring developers while ensuring architectural alignment with business goals.
Overview
6
years of professional experience
Work History
BotsZASandton
Lead Software Architect (contracted as Intermediate Software Engineer)
08.2023 - Current
Job overview
- Designed and maintained scalable cloud architecture (AWS) for chatbot systems.
- Spearheaded CI/CD automation (GitHub Actions), reducing deployment errors by 40% and improving release velocity.
- Optimized infrastructure achieving 99.9% uptime and reduced cloud costs by 80%.
- Acted as de facto Cloud/DevOps lead, guiding architecture and aligning delivery with business priorities.
Technology: C#, .net, angular, postgreSQL, elastic search, semantic kernal, cloudflare, aws
Dark PoolsRandburg
Software Engineer (contracted as Junior Software Developer, acted as Lead for ML Integration)
08.2022 - 06.2023
Job overview
- Developed front-end for fraud detection and anti-money laundering systems.
- Designed JSON contracts for back-end ML integration and graph database structures.
- Built prototypes, documented coding standards, and contributed to rapid design iterations.
- Acted beyond role by leading integration strategy and prototyping of ML-based fraud detection platform.
Technology: Python, React, Neo4j, TensorFlow
Simple Software TechnologiesRandburg
Junior Software Developer
02.2022 - 07.2022
Job overview
- Built a learning development portal with Angular front-end and NestJS backend.
- Generated and ran Postgres migrations; deployed and implemented AWS services.
- Delivered new features that improved platform usability and reduced support issues.
Technology: Angular, NestJS, PostgreSQL, AWS EC2 and S3
RoundafireJohannesburg
Intern Front-end Developer
12.2019 - 12.2020
Job overview
- Created reusable React modules and managed Firebase deployments.
- Contributed to technical documentation and frontend codebase improvements.
Technology: HTML, CSS, Javascript, Bootstrap, React
Education
Google
Encoder-Decoder Architecture
02.2025
Google
Introduction to Generative AI
02.2025
Amazon Web Services
AWS Tools to Develop, Run, and Modernize .NET Workloads
01.2025
Google
Conversational AI on Vertex AI and Dialogflow CX
11.2024
Coursera
Application Development using Microservices and Serverless
04.2023
Coursera
Container & Kubernetes Essentials V2
04.2023
Wits University
Technical Practices for the Professional Software Developer
05.2022
Microsoft Certified: Azure Fundamentals
01.2019
Rostec College
NQ4 Software Development
01.2019
General Smuts High School
Matric (Grade 12)
01.2017
Skills
- AWS
- Docker
- Kubernetes
- ECS
- Lambda
- SAM
- CI/CD
- Monitoring
- Logging
- Microservices
- Serverless
- Event-driven systems
- API-first architecture
- Solution design
- NET
- Python
- Java
- JavaScript
- TypeScript
- Angular
- React
- SQL
- Postgres
- Machine Learning integration
- Data pipelines
- Security
- Agile
- Project leadership
Accomplishments
- Cut cloud infrastructure costs by 80% while improving system uptime to 99.9% through architecture redesign and automation.
- Led DevOps transformation by implementing CI/CD pipelines (GitHub Actions), reducing deployment errors by 40% and accelerating releases.
- Architected scalable cloud solutions (AWS, Serverless, Microservices) for enterprise-grade chatbot and fraud detection platforms.
- Acted as de facto Architect/Tech Lead across multiple roles, consistently delivering beyond contractual titles.
Cover Letter
Dear Hiring Manager,, I am a Cloud and Software Architect with a passion for designing and delivering solutions that are both technically robust and strategically impactful. Over the past four years, I have consistently taken on responsibilities beyond my formal roles-leading architecture, DevOps transformations, and machine learning integrations while mentoring teams and ensuring that every project aligns with broader business goals. In my current and previous positions, I have driven measurable results: I redesigned cloud infrastructure for enterprise-grade chatbot systems, achieving 99.9% uptime while cutting costs by 80%. I spearheaded CI/CD adoption, reducing deployment errors by 40% and accelerating release cycles. I led the prototyping and integration of machine learning-based fraud detection platforms, establishing architectural standards and guiding the team through complex technical challenges. Across all my projects, I have focused on creating scalable, maintainable, and high-performing solutions, whether building microservices, serverless applications, or end-to-end data pipelines. Beyond technical execution, I excel at bridging business and technology, mentoring developers, and fostering environments where innovation and operational excellence thrive. I take pride in delivering solutions that not only solve immediate problems but also set the foundation for long-term growth and resilience. I am excited to bring my expertise, leadership, and results-driven approach to new opportunities where I can contribute to innovative projects and make a lasting impact., Sincerely, Lesego Sebusi
Core Technical Skills
AWS, Docker, Kubernetes, ECS, Lambda, SAM, CI/CD (GitHub Actions), Monitoring & Logging, Microservices, Serverless, Event-driven systems, API-first architecture, Solution design, .NET, Python, Java, JavaScript/TypeScript, Angular, React, SQL/Postgres, Machine Learning integration, Data pipelines, Security, Agile/Project leadership
Education Certifications
- Encoder-Decoder Architecture, Google, 2025-02-01
- Introduction to Generative AI, Google, 2025-02-01
- AWS Tools to Develop, Run, and Modernize .NET Workloads, Amazon Web Services, 2025-01-01
- Conversational AI on Vertex AI and Dialogflow CX, Google, 2024-11-01
- Application Development using Microservices and Serverless, Coursera, 2023-04-01
- Container & Kubernetes Essentials V2, Coursera, 2023-04-01
- Technical Practices for the Professional Software Developer, Wits University, 2022-05-01
- Microsoft Certified: Azure Fundamentals, 2019-01-01
- NQ4 Software Development, Rostec College, 2018-01-01
- Matric (Grade 12), General Smuts High School, 2017-01-01
Personal Information
Title: Lead Software Architect | Cloud & DevOps Engineer
Languages
English
Bilingual or Proficient (C2)
Timeline
Lead Software Architect (contracted as Intermediate Software Engineer)
BotsZA
08.2023 - Current
Software Engineer (contracted as Junior Software Developer, acted as Lead for ML Integration)
Dark Pools
08.2022 - 06.2023
Junior Software Developer
Simple Software Technologies
02.2022 - 07.2022
Intern Front-end Developer
Roundafire
12.2019 - 12.2020
Encoder-Decoder Architecture
Introduction to Generative AI
Amazon Web Services
AWS Tools to Develop, Run, and Modernize .NET Workloads
Conversational AI on Vertex AI and Dialogflow CX
Coursera
Application Development using Microservices and Serverless
Coursera
Container & Kubernetes Essentials V2
Wits University
Technical Practices for the Professional Software Developer
Microsoft Certified: Azure Fundamentals
Rostec College
NQ4 Software Development
General Smuts High School
Matric (Grade 12)