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preston williams

@kingsley_uwakwe

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Senior software engineer delivering reliable backend systems, test discipline, and production support.

Canada

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What I'm looking for

I’m looking for a team where I can ship dependable backend systems with strong testing, clear API contracts, and real production ownership—tightening defect loops, improving reliability under load, and collaborating on incremental, high-quality releases.

I’m a Senior Software Engineer with 10+ years in C, Java, Python, and Node.js, focused on delivering testable backend systems and owning production support across web and transaction-heavy products. I bring code review discipline, unit testing, API design, and performance tuning—especially in regulated, reliability-sensitive environments.

In recent roles, I architected voice and chat flows in Node.js to keep multilingual scheduling reliable across 20K monthly interactions, built C services for error analysis, and hardened retries and logging to tighten defect loops. I designed API contracts for appointment routing, integrated OpenAI API with embeddings to improve search relevance for 30+ supported languages, and added guardrails and fallback logic to reduce bad responses under noisy inputs.

I also strengthen operational confidence with refined production dashboards, metrics, and alerting so regressions are caught early. Earlier, I engineered C services for gaming wallets and transactions and improved response times by 30%, then in Java/Spring Boot rebuilt backend processing for 3D model pipelines—cutting execution time by 40%—while supporting internal teams with React and TypeScript tooling.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Ordibl & Aivira.ai

Apr 2023 - Apr 2026 (3 years)

Architected multilingual voice and chat flows in Node.js and built C services for error analysis, retries, and logging. Integrated OpenAI API and embeddings into search flows and improved reliability via prompt guardrails, dashboards, and release reviews.

C#API Design OpenAI API Embeddings Logging Observability

Senior Software Engineer

Debut Infotech Pvt Ltd

Jan 2022 - Mar 2023 (1 year 2 months)

Engineered C-based wallet and transaction services for gaming, including edge-case handling for deposits, withdrawals, and betting flows. Built unit tests, tuned database/API paths to improve latency, and implemented idempotent settlement during retries while coordinating defect tracking in JIRA/RTC.

C#Unit Testing VectorCast Cantata API Paths Jira Git

Full Stack Developer

Fusion Computing Limited

Oct 2016 - Dec 2021 (5 years 2 months)

Revitalized Java backend processing for 3D model pipelines using Spring Boot, improving execution time and reducing manual handoffs for large point-cloud jobs. Built REST APIs and supported operational visibility with React/TypeScript tools, along with indexing/query and logging improvements for production reliability.

Java Spring Boot REST APIs Logging React TypeScript

Full Stack Developer

Thought Media

Aug 2012 - Oct 2016 (4 years 2 months)

Oversaw reporting platforms for digital marketing apps by building backend APIs and tuning MySQL/PostgreSQL query plans and indexes to reduce dashboard latency. Developed Node.js/Express tracking and reporting services, added export/reconciliation jobs, and supported enhancements by reproducing and fixing production issues.

Express MySQL PostgreSQL REST APIs Reporting & Analytics Validation Debugging