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ALLWELL ONEN

PRODUCT ENGINEER (FRONTEND) | REACT · TYPESCRIPT · NEXT.JS

PROFILE

Frontend-focused product engineer with 7+ years of remote experience turning ideas into SaaS applications, marketplaces, and customer-facing workflows. Sole frontend engineer at an early-stage startup, helping launch its first product in three months and evolve it through several pivots. Combines React/TypeScript engineering with product initiative, cross-functional delivery, and practical problem-solving for real users. Experienced working with distributed teams across the US, Europe, Latin America, and Africa.

TECHNICAL SKILLS

Frontend:
TypeScript, JavaScript, React, Next.js, React Router, Vue, Nuxt, HTML, CSS, Tailwind CSS, shadcn/ui, Mantine
Product & Data:
Multi-tenant applications, role-based workflows, TanStack Query, Apollo Client, GraphQL, REST APIs, Zustand, Pinia, WebSockets
UI & Content:
Reusable component systems, data visualization, responsive interfaces, accessibility, Sanity CMS, Storyblok CMS
Quality & Delivery:
Unit/integration testing, performance optimization, Sentry, GitHub Actions, code review, Docker, Vite, Turborepo, Git, Claude Code, OpenAI Codex

PROFESSIONAL EXPERIENCE

  1. Frontend Engineer (Part-time) | Serendpt AI

    Lagos, Nigeria | Apr 2026 – Present

    • Identified a gap in Swift Agents and proposed its Forms feature, then built hosted and embeddable forms so businesses could collect and manage customer submissions in the same platform as their AI support agents.
    • Designed form creation and submissions workflows, company-scoped TanStack Query data handling, and integration documentation. The team reported no forms-integration support tickets following release.
    • Built an agent Knowledge Base and scheduled/on-demand website traversal so support agents could retrieve business information and reflect changes to customer pages and navigation.
    • Diagnosed and fixed a customer-facing chatbot integration failure caused by obsolete auto-mount logic; also delivered a Next.js merchant dashboard for KYC, transactions, reconciliation, payouts, and SIM management.

  2. Software Engineer, Frontend | Braudit

    Lagos, Nigeria | Feb 2023 – Apr 2026

    • Joined a five-person startup before its product existed and served as the sole frontend engineer, working directly with product, design, and backend engineering through the initial three-month launch and subsequent pivots.
    • Developed Workday, the product’s most-used workflow, with daily task tracking, rollover of unfinished tasks, and productivity grades visible to managers and admins. Braudit served 33 organizations, each with at least 30 employees.
    • Delivered goals, KPIs, workload, approvals, and AI-assisted performance review experiences as the company evolved from career tools into an employee performance and productivity platform.
    • Established a multi-tenant React/TypeScript architecture with typed GraphQL operations, organization-scoped data, and reusable components to accommodate changing requirements across administrator, manager, and employee experiences.

  3. Frontend Engineer | Moonshot IT

    São Paulo, Brazil | May 2019 – Jan 2023

    • Built Itinerator, an interactive trip-planning application with maps, saved places, scheduling, and notes. Defined interim JSON data structures and API expectations to keep development moving before backend services were ready.
    • Identified browser lag from loading 4,000+ dashboard records and worked with backend engineering to paginate responses. In manual checks, observed loading fall from about 5–6 seconds to 1–2 seconds, with zero page freezes.
    • Delivered customer-facing agency and Web3 products, including an eight-page agency website with a blog in one week, Bittensor analytics dashboards, and a localized Vue/Nuxt education platform.

SELECTED CONTRACT & INDEPENDENT PRODUCT WORK

  1. Co-founder & Frontend Engineer | SmoothBook (pre-launch)

    Lagos, Nigeria | Apr 2026 – Present

    • Co-building a short-let booking product across manager, agent, and marketing applications, with shared API/authentication packages and tenant-aware access controls.
    • Designed booking and availability workflows, including multi-step guest details, document upload, booked-date blocking, and live pricing previews reconciled with server calculations.

  2. Frontend Engineer | Digital Spiders

    Lisbon, Portugal | Jun 2026

    • Integrated Hook Point activity notifications into existing client-specific Slack threads, using fuzzy matching and setup documentation to keep the team informed about key customer actions.

  3. Web Developer | Studio Freight

    Columbus, United States | Jun 2025 – Jan 2026

    • Developed flexible Sanity and Storyblok content systems for agency clients, enabling non-technical editors to manage pages, reusable sections, SEO, navigation, forms, and site content with safeguards.
    • Collaborated with an engineering partner to script a large GrowthLoop content migration instead of continuing manual entry, and created content-preservation scripts for agency project showcases.

  4. Frontend Developer | Jundaro

    New York, United States | Sep 2024 – Jan 2025

    • Built the client, freelancer, and admin product flows for a marketplace, covering project applications, messaging, transactions, disputes, and management dashboards.
    • Worked with backend engineering to consolidate dashboard data requests, observing loads improve from around 4–6 seconds to roughly 1 second in manual checks; implemented Sentry monitoring.

  5. Frontend Developer | TechSkill UK (Pather)

    London, United Kingdom | Apr 2024 – Jul 2024

    • Owned frontend delivery across learner, expert, and admin applications after another developer left, covering courses, video uploads, live sessions, quizzes, moderation, and reporting.
    • Wrote coding guidelines, mentored an intern, and reused components to accelerate subsequent UI builds; improved delivery quality through code review, lazy loading, and Sentry monitoring.

SELECTED LIVE WORK

EDUCATION & AVAILABILITY

B.Sc., Computer Science | Anchor University, Lagos, Nigeria

Remote availability: Full-time, part-time, or contract; European working hours or 4–6 hours of US Eastern Time overlap.