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Justus kasyokiJK
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Justus kasyoki

@justuskasyoki

I build cloud-native APIs and microservices that accelerate secure fintech and healthcare delivery.

Kenya
Message

At Cigna Health Group, I lead cloud-native API and microservice strategy, cutting lead time to production by about 60% for revenue features.

I've owned Azure DevOps CI/CD and blue-green releases, reducing deployment windows to 2–4 hours while improving release safety. I also strengthened observability and SQL performance, lowering MTTR by about 45% and increasing throughput.

Across Ed Partners Africa, Fintech Group, and Brightsoft Technologies, I've delivered RESTful integrations, T24 core-banking workflows, Microsoft Dynamics integrations, and scalable SaaS deployments. My work has improved partner onboarding, reduced production incidents by about 70%, and supported 50,000+ daily transactions.

I build secure distributed systems with C#, ASP.NET Core, Azure, SQL Server, Kafka, Docker, and AI/LLM-assisted development workflows. I enjoy turning complex operational and integration challenges into reliable, measurable delivery improvements.

Experience

Work history, roles, and key accomplishments

CG
Current

Senior Software Engineer

Cigna Health Group

Mar 2025 - Present (1 year 6 months)

Led cloud-native API and microservice strategy, cutting lead time to production by ~60% and accelerating delivery of revenue features. Owned Azure DevOps CI/CD and blue-green release process, shrinking deployment windows to 2–4 hours and reducing deployment risk.

Education

Degrees, certifications, and relevant coursework

Jaramogi Oginga Odinga University of Science and Technology logoJT

Jaramogi Oginga Odinga University of Science and Technology

Bachelor of Science, Business Information Systems

2016 - 2020

Grade: Second Class Upper

Pursued a Bachelor of Science in Business Information Systems, graduating with Second Class Upper honors.

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