JIJoshua Isaac
@joshuaisaac
Senior backend engineer and technical architect building scalable cloud-native systems.
KenyaWhat I'm looking for
I am a senior backend engineer and technical architect with six years of experience building scalable, high-performance systems across fintech and marketplace platforms.
As a founding engineer and core contributor at startups, I combine a product-aware mindset with hands-on engineering to design robust backend architectures, optimize cloud infrastructure, and deliver resilient services that scale with demand.
My work includes architecting payment and payroll systems, implementing durable workflows with Temporal, and reducing operational costs through infrastructure optimization and observability. I have driven measurable improvements such as 35–50% reduced inter-service latency and 50% monthly service cost savings.
I mentor teams, author technical documentation, and lead engineering efforts from inception to production, prioritizing reliability, performance, and real-world impact.
Experience
Work history, roles, and key accomplishments
Lead Software Engineer
Panganc
Nov 2024 - Present (1 year 1 month)
Implemented resilient backend workflows with Temporal to enable persistent requests and automatic retries, and reduced inter-service latency by 35–50% via HTTP/2 + NATS and DNS caching optimizations.
Founding Engineer
Gwiji
Jan 2021 - Present (4 years 11 months)
Architected and led development of a scalable marketplace connecting cleaners with clients, integrated payments and collection workflows, and doubled cleaner wages through product initiatives.
Senior Software Engineer
Gladys Financials
Jan 2022 - Sep 2024 (2 years 8 months)
Led design and development of a scalable payroll system that automated statutory deductions and cut monthly service costs by 50% through cloud optimizations and monitoring improvements.
Senior Software Engineer
Tospay Limited
Jan 2020 - Dec 2022 (2 years 11 months)
Architected a merchant settlement engine with multi-currency support and optimized payment/checkout flows, improving transaction processing times and enabling cross-border payments.
Education
Degrees, certifications, and relevant coursework
KUKenyatta University
Bachelor of Science, Mathematics and Computer Science
2015 - 2019
Completed a Bachelor of Science in Mathematics and Computer Science, covering core topics in both disciplines and practical computing skills.
Availability
Location
KenyaAuthorized to work in
Job categories
Skills
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