Vincent Onyango.

• Self-host various applications on my homelab servers including Forgejo (Git server), Hydra (Nix build farm), Bind9, Truenas, Harbor, and others.
• Manage all services in my infrastructure using Nix and Terraform, leveraging GitOps techniques to ensure all configurations are declarative.
• Securely expose services to the internet via VPN. Configured network segmentation across home servers to isolate workloads into their respective subnets.
• Implemented Continuous Integration and Delivery (CI/CD), ensuring service configurations are continuously delivered and servers themselves remain declarative via Nix/NixOS with OS images rebuilt on every change.
• Extended open-source software such as Hydra (Perl, Rust, Nix) and Harbor Operator (Go) to fix bugs and add new functionality.

• Spearheaded incorporation of AI functionalities into web products, including architectural design for integrating AI tooling across the platform.
• Direct a cross-functional engineering team in developing and scaling core web products using Django, React, Next.js, and TypeScript on a Vercel/AWS infrastructure.
• Partner directly with the CTO and product design teams to define technical roadmaps, prioritize Agile sprints via Linear, and align engineering outputs with core business objectives.
• Spearheaded SEO and web performance optimization initiatives (Lighthouse, Workbox), successfully driving a 15% increase in organic application traffic.
• Architect and scale secure backend solutions utilizing the Django REST framework, PostgreSQL, Celery, and Redis, ensuring high availability and low latency.
• Establish and enforce engineering standards across the organization, advocating for strict TDD, rigorous PR reviews, pair programming, and automated CI/CD pipelines.
• Mentor junior and mid-level developers, resolving complex architectural bottlenecks and fostering a culture of continuous learning and high code quality.

• Spearheaded front-end architecture and development lifecycles for high-traffic web applications, overseeing project phases from initial technical specification to production deployment.
• Architected a custom Node.js CLI tool to automate UI component scaffolding, standardizing the workflow and accelerating development cycles across the entire engineering department.
• Designed highly extensible API schemas in collaboration with backend teams, streamlining the integration of new features and accelerating overall delivery metrics.
• Authored comprehensive technical documentation and standardized tooling, significantly reducing the onboarding time for new engineering hires.
• Executed feature implementations strictly to specification while optimizing client-side performance and security, ensuring a seamless and reliable user experience.

• Partnered with the data science team to architect and develop an internal, data-heavy web application utilizing Python/Django and JavaScript/React.
• Designed a robust, multi-target distribution structure for .NET microservices utilizing Nix for declarative dependency management and cross-compilation across Linux, Windows, and Darwin architectures.
• Redesigned legacy front-end architectures to enhance extensibility, cutting development time for new features and improving static code quality metrics.
• Applied Domain-Driven Design (DDD) and event-driven paradigms using .NET and C# to build scalable applications, boosting system performance and scalability.

Leveraged Python/Flask, Django, and GraphQL to build robust backend APIs, while seamlessly context-switching to frontend development using JavaScript/React/Redux.

• Converge (Room Management System): Engineered GraphQL mutations/queries and optimized backend API performance, resolving critical Google Calendar synchronization bottlenecks.
• Hall of Fame (Social Engagement Site): Debugged and refactored legacy codebases to improve quality. Implemented CI tooling to enforce consistent formatting. Optimized database queries and the ORM layer, resulting in a more responsive application.
• AuthorsHaven (Blogging App): Managed deployments and integrated CI/CD pipelines for secure delivery.

Built production applications for multiple clients, establishing expertise in full-stack development and client delivery.

• Quexl Web App: Architected and maintained a robust backend and database system using Python/Django with strict TDD practices, significantly improving user engagement and platform reliability.
• Mobilities Web App: Delivered end-to-end full-stack development using React/TypeScript and Python/Django, integrating multiple third-party APIs to expand platform capabilities and user value.