Open to opportunities

Joshua Udensi

@joshuaudensi

Message

I am a senior software engineer specializing in cloud, data platforms, and greenfield full-stack leadership.

Canada

Message

What I'm looking for

I seek senior engineering roles leading greenfield cloud/data platform projects—hands-on full-stack work, LLM/AI integration, product ownership, and a collaborative, fast-moving startup environment.

I am a senior software engineer with eight years building SaaS and data-driven cloud platforms using React/Next.js, Go, and Python. I turned zero-to-one ideas into products that drove 10x subscription growth, cut defects by 80%, and sustained 99.9% uptime through modern architecture and developer workflow improvements.

I've led greenfield full-stack teams to ship LLM-integrated dashboards, implemented point-in-time Postgres branching with Debezium, and modernized widget platforms to slim bundles 60% and reduce release bugs 82%. I now build Klay, a local-first wealth-management product, and seek roles where I can lead hands-on engineering teams focused on product impact and measurable outcomes.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Opiniion

Jul 2025 - Present (1 month)

Introduced point-in-time Postgres branching via Debezium CDC, cutting dev setup from days to 30 minutes and eliminating production-only bugs; designed an LLM workflow that converts natural-language prompts into a query-DSL and Vega-Lite JSON powering React/Nivo visualizations.

Postgres Debezium LLMs)Vega Lite React Go)Python Change Data Capture

Current

Founder/Full-Stack Engineer

Current

Klay

Jan 2025 - Present (7 months)

Building a local-first wealth-management system that tracks income and spend, runs 12-month cash-flow forecasts, and surfaces AI-driven tips on saving, investing, and credit building for middle-income users.

Svelte SQLite LLMs)Client Side Sync

Technical Team Lead

Rentgrata

Nov 2023 - Jul 2025 (1 year 8 months)

Architected and shipped a customer-facing React/Next.js LLM-powered dashboard and redesigned property-management flows into single-page UIs; launched Ari, driving >100% subscription growth and reduced production bugs by 80% via trunk-based development and dockerized test infrastructure.

React Next.js LLMs)Docker CI CD Trunk Based Development AWS TypeScript

Senior Software Engineer III

Rentgrata

May 2020 - Oct 2023 (3 years 5 months)

Migrated the widget platform to TypeScript and React, slimming bundles by 60%, cutting load-time and animation lag, and driving an 82% drop in release bugs with zero rollbacks for 12 months.

TypeScript React Performance Optimization Design Systems A B Testing Frontend Architecture Cross Domain Messaging

Full-stack Software Developer

Unbird

Jul 2019 - May 2020 (10 months)

Built and shipped an end-to-end SaaS web app and added CircleCI + AWS CodeDeploy automation that cut deployment time by 50% and sped incident recovery; redesigned 35+ MongoDB schemas to boost data integrity and read/write performance.

CircleCi AWS CodeDeploy MongoDB API Design Schema Design

Community Lead

Facebook Developers Circle

Sep 2018 - May 2020 (1 year 8 months)

Led mentorship, workshop development, and curriculum creation for the ReactJS community, supporting learner assessment and startup-focused training programs.

Mentorship Curriculum Development React Community Management

Software Developer

Rentgrata

Nov 2018 - Jul 2019 (8 months)

Built and launched the flagship widget SDK, increasing conversion rate by 163% in two months and reworking SDK analytics, incident monitoring, and security to improve client insights.

JavaScript SDK Development Analytics Monitoring Security

Software Developer

Andela

Mar 2017 - Nov 2018 (1 year 8 months)

Migrated a feedback client from AngularJS to React, increasing developer productivity by 50% and system stability by 70%; contributed to migrating the API gateway and 12 microservices to Mali.js, improving backend stability by 15%.

React AngularJS Microservices Mali.Js API Gateway JavaScript Backend Development

Education

Degrees, certifications, and relevant coursework

University of Oxford, Saïd Business School

Executive Education - Fintech Programme, Fintech

2024 -

Completed the Oxford Fintech Programme focusing on fintech strategy, blockchain rails, KYC/AML workflows, and FX-hedging models; capstone developed 'Klay', a multi-currency neo-bank prototype and pilot plan.