lenson.
Tools: Codex, Next.js, Cursor, React, TypeScript, Node.js, Tailwind CSS, JavaScript, AI integration, Anthropic, Express, Vercel, Sanity and Contentful.
I build AI-enabled products

A little magic.
Real web & AI products.

I turn ideas into useful experiences with the tools floating around you.

Explore my work

Lenson Fernandes.

From an idea to a product
people can use.

I’m Lenson Fernandes. I build AI-enabled web products, connecting thoughtful interfaces with the engineering behind them.

Explore my work
React / Next.js / TypeScript / Node.jsOpen to remote work & relocation

01 / SELECTED WORK

Built with purpose.

Product engineering across AI workflows,
e-commerce and everyday user journeys.

KOCHI / PRODUCT EVIDENCE2 VIEWS
Explore the interface
Kochi case-review interface with selected synthetic cases, expandable details and Add cases action.

Kochi’s case-review interface combines accessible selection, expandable details and one primary action. Synthetic demonstration data.

Kochi comparative results with synthetic baseline and experiment answers and judgments. Scores are demonstration data, not performance claims.

A single comparative summary brings baseline and experiment responses into one review workflow. Synthetic answers and judgments.

Interface preview, synthetic demonstration data. Example judgments and scores are not performance claims.
01

PRODUCT ENGINEERING · FAMILYTALKGPT

Kochi

Making AI workflows feel like a workspace, not a collection of tools.

More context

I independently handle most end-to-end development of Kochi, a Next.js-based AI product. My work spans the prompt workspace, agent configuration, evaluation workflows and developer tooling, bringing interface development, workflow behavior and testing together.

My contribution
Most end-to-end development, spanning interface work, workflow behavior and testing.
Built with
Next.js · SDK examples · Evaluation testing
Result
Prompt, agent-configuration and evaluation workflows in an AI workspace.
Next.jsAgent workflowsLLM evaluation
Visit Kochi (opens in a new tab)

ENGINEERING CASE STUDY / KOCHI

Making AI workflows
easier to inspect.

My work on Kochi connects the prompt workspace, agent configuration and evaluation workflows, bringing interface development, workflow behavior and testing together.

Explore Kochi (opens in a new tab)
01 / MY CONTRIBUTION

Build the workflow, not just the screen.

I independently handle most end-to-end development of Kochi. Recent work includes the prompt workspace, agent configuration, evaluation views and reusable run setup in the macOS application.

02 / BUILT WITH

Interface work, backed by testing.

I build the Next.js product, prepare SDK starter examples and customer walkthroughs, and test Anthropic orchestrator and subagent evaluation flows across the SDK and macOS app.

03 / RESULT

Make the details visible.

The case-review interface supports selection and expandable details. A comparative summary brings baseline and experiment responses into a single review view.

MISSIONSWORKFLOW TOOL
CONCEPTUAL ILLUSTRATION

INDEPENDENT BUILD · AI-ASSISTED DEVELOPMENT

Missions

A bridge between tracking work and doing it.

More context

I independently built an issue-tracking workflow connected to Codex, bringing task context into an AI-assisted development process.

My contribution
Independently built an issue-tracking workflow connected to Codex.
Built with
Codex integration
Result
Task context brought into an AI-assisted development process.
Workflow designProduct ownershipCodex integration
HEALTHYBABYE-COMMERCE
EDITORIAL ILLUSTRATION · NOT CLIENT BRANDING

CLIENT PROJECT · VIA WEBONISE

HealthyBaby

Frontend development for an e-commerce experience.

More context

As a Software Engineer – React.js at Webonise, I was a major frontend contributor to HealthyBaby’s headless Next.js and Shopify migration, working with Contentful CMS and integrating Nacelle and Recharge. I worked with the client’s Chief Product Officer to align delivery with product requirements.

My contribution
Major frontend contributor through Webonise; worked with the client’s Chief Product Officer.
Built with
Next.js · Shopify · Contentful · Nacelle · Recharge
Result
Frontend contributions to a headless-commerce migration and subscription workflows.
React / Next.jsShopifyHeadless commerce
04

BACKEND & TESTING

Confidence in the everyday flows.

Used Jest while building the Express backend for Baby Talk GPT. My broader testing experience also includes using Playwright to check recurring sign-in and sign-out journeys.

ExpressJestPlaywright

02 / EXPERIENCE

The work behind the work.

From customer-facing support
to building web and AI products.

  1. – Present

    Current role

    AI Software Engineer (joined as Web Engineer)

    FamilytalkGPT Inc. / Kochi

    My role evolved from web development into broader AI-product engineering, independently handling most end-to-end development of Kochi.

    • Build the Next.js product, with recent focus on the prompt workspace and evaluation workflows.
    • Develop agent configuration and evaluation views that show tool calls, requests, responses and timing, plus reusable run setup in the macOS application.
    • Prepare SDK starter examples and customer walkthroughs, and test Anthropic orchestrator and subagent evaluation flows across the SDK and macOS app.
    • Earlier work included an Express backend for Baby Talk GPT, tested with Jest, and Node.js backend contributions to an AI chatbot for The Knot, a FamilytalkGPT client.
    Next.jsAI workflowsSDK examplesNode.js / ExpressJest
    Product: Kochi (opens in a new tab)

  2. –

  3. –

    Software Engineer – React.js

    Webonise

    Frontend engineering for HealthyBaby, a Webonise client.

    • Built React and Next.js interfaces as a major frontend contributor to HealthyBaby’s move to headless Shopify commerce.
    • Worked with Contentful CMS and integrated Nacelle and Recharge into commerce and subscription workflows.
    • Collaborated with the client’s Chief Product Officer to connect product requirements with frontend delivery.
    React / Next.jsShopifyContentfulNacelleRecharge
    Client project through Webonise: HealthyBaby (opens in a new tab)

  4. –

    Hands-on training

    Hands-on Software Development Training

    AccioJob

    Project-based frontend development training, with hands-on builds and problem-solving practice.

    • Built hands-on development projects using React, JavaScript, HTML and CSS.
    • Developed problem-solving foundations through data structures and algorithms.
    ReactJavaScriptHTML / CSSData structures & algorithms

  5. –

    Priority Support Engineer

    Citrix

    Progressed from associate technical support into priority support responsibilities for Citrix Virtual Apps and Desktops customers.

    • Resolved technical issues for Priority and Priority Plus customers, coordinating with vendors and partner support engineers.
    • Worked on StoreFront page customisation, log analysis and Citrix Cloud support.
    Citrix Virtual Apps & DesktopsStoreFrontCitrix CloudTechnical troubleshooting
    Platform supported: Citrix Cloud (opens in a new tab)

03 / HOW I WORK

A product mindset.
An engineering foundation.

I like working across the space between a user’s problem and a working product. My experience connects frontend development, backend work, AI-enabled workflows and testing.

I use AI tools as part of the development process, while staying responsible for the implementation, review and behavior of what ships.

01

Interfaces that make sense
React, Next.js and TypeScript

02

Work beyond the browser
Node.js and Express

03

Test the paths people use
Jest and Playwright

04 / WHAT’S NEXT

Have something
worth building?

I’m based in India and open to remote product-engineering roles and relocation opportunities.

Connect on LinkedIn (opens in a new tab)