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Dennis Wainaina

@denniswainaina

Software engineer at Bytes Lab building Still200, an uptime platform with event-driven incident processing and LLM-generated summaries.

Kenya

Message

At Bytes Lab, I develop and operate independent SaaS products focused on backend reliability, distributed systems, and AI-powered features. I built and operate Still200, an uptime and scheduled-job monitoring platform with event-driven incident processing and LLM-generated incident summaries.

I also launched KindlyNote, an AI-powered messaging application with message generation and asynchronous email delivery. In Still200, I improved API latency by approximately 300 ms per request by replacing remote authentication verification with local JWT validation, informed by tracing.

At Percolate by Seismic, I led technical execution for the analytics engineering team and designed PostgreSQL systems for high-concurrency workloads. I built Python APIs and asynchronous services, led GDPR-related PII handling for EU customers, and designed analytics integrations with Snowflake and Domo.

Experience

Work history, roles, and key accomplishments

Current

Founder & Software Engineer

Current

Bytes Lab

Aug 2026 - Present (3 months)

Develop and operate independent SaaS products focused on backend reliability, distributed systems, and AI-powered application features. Built and operate Still200, an uptime and scheduled-job monitoring platform, and launched KindlyNote, an AI-powered messaging application.

fastAPI PostgreSQL Redis NATS OpenAI API JWT Docker AWS Python Asynchronous Processing Event Driven Architecture LLM Integrations Observability Prometheus Grafana

Software / Data Engineer (Analytics Technical Lead)

Percolate by Seismic

Dec 2018 - Aug 2026 (7 years 8 months)

Led technical execution for the analytics engineering team, translating product and data requirements into delivered services and features. Designed and scaled PostgreSQL systems for high-concurrency workloads, built Python REST APIs and asynchronous services, and led GDPR-related PII handling for EU customers.