Nick James

Full-stack software engineer

Product-minded engineering

I build SaaS products, automation systems, mobile apps, and data-heavy tools.

I build product interfaces, backend APIs, payments, marketplaces, automation, and mobile apps.

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Current role

Co-Founder and CTO

Flippify LTD

Product scope

Web, mobile, APIs

Payments, marketplaces, automation

M3 Challenge

26th of 643 teams

Honourable Mention

Academic record

A*A*A*A

Physics, Maths, Further Maths, CS

Selected product surfaces

Real screenshots from product and platform work.

6 public builds

Flippify

Seller analytics

Flippify product preview

VulpineOS

Agent operations

VulpineOS product preview

TaskTree

Workflow hierarchy

TaskTree product preview

Featured work

Products and systems with real scope.

A focused selection across SaaS, payments, marketplaces, browser-agent infrastructure, workflow tooling, and education.

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Flippify dashboard showing revenue, costs, sales, inventory, and ROI.

SaaS company

Flippify

Live company product

Inventory, order, expense, and analytics software for online sellers.

Co-founded and led development across the mobile app, web platform, backend services, billing flows, marketplace sync, and seller operations tooling.

Role

Co-Founder and CTO, 2024 - present

React NativeExpoNext.jsFastAPIFlask
WebsiteMonorepo
VulpineOS operator panel dashboard.

Browser-agent infrastructure

VulpineOS

Open-source platform

A browser-agent runtime for managing secure AI browsing sessions at scale.

A Go-based control plane and operations surface around Firefox/Camoufox browser-agent work, with MCP tools, TUI, web panel, runtime audit, and session management.

Role

Systems and product engineering

GoReactMCPDockerWebSocket
TaskTree preview showing a monday.com board view and status controls.

monday.com app

TaskTree

Product build

A monday.com Board View app for deep task hierarchies and drag-and-drop planning.

TaskTree turns flat monday.com boards into nested task structures with durable Supabase persistence, optimistic drag-and-drop, inline renaming, and API-backed board sync.

Role

Product builder, 2026

Next.jsTypeScriptdnd-kitSupabasemonday SDK
Karsilo product icon.

B2B analytics SaaS

Karsilo

B2B SaaS

Multi-entity Stripe analytics and payment reporting for organizations.

Karsilo consolidates revenue, customers, products, refunds, payouts, reports, and team access across multiple Stripe-connected accounts.

Role

Full-stack product engineering, 2026

Next.jsReactTypeScriptFirebaseNextAuth
Salkaro icon used for portal and product branding.

Client portal

Salkaro Portal

Platform work

A secure client portal for sharing project progress without extra tool seats.

Portal connects agency project tools, exposes project progress through secure client access flows, and supports structured PDF exports.

Role

Full-stack product engineering, 2026

Next.jsTypeScriptTailwindStripeLinear
Fera Academy advanced physics page showing a rocket thrust model.

Education platform

Fera Academy

Education product

A structured learning platform with course navigation, search, and physics content.

Fera Academy uses shared docs infrastructure, reusable UI, course trees, topic pages, questions, and answers across a broad advanced physics curriculum.

Role

Frontend and content systems

Next.jsReactTypeScriptTurborepoTailwind

Experience

A work history built around shipped product.

The CV reads strongest when it is framed as product ownership, client delivery, and automation systems rather than a list of technologies.

01

January 2024 - Present

Remote

Co-Founder and CTO

Flippify LTD

Led product and engineering across a seller-focused SaaS platform covering web, mobile, APIs, payments, marketplace sync, and automation.

Built and scaled core infrastructure for inventory, orders, analytics, billing, and seller workflows.

Architected backend systems for syncing inventory and orders from external marketplaces.

Implemented Stripe subscriptions, webhooks, access permissions, rate limiting, and Firestore rules.

Led cross-platform mobile app development and took part in hiring interviews.

PythonFastAPIFlaskReact NativeExpoFirebaseStripe
02

October 2025 - March 2026

Remote

Full Stack Engineer

Built Tech

Contract work across CRM features, social data ingestion, company website delivery, and internationalized client-facing pages.

Built CRM features for a client project.

Created an Apify ingestion pipeline for Instagram, X/Twitter, YouTube, and TikTok metrics.

Delivered a company website with portfolio and Calendly scheduling integration.

Added multi-language support across 10 languages.

JavaScriptTypeScriptApifyCalendlyi18n
03

January 2022 - April 2024

Remote

Software Engineer

Freelance

Built automation and data extraction systems for clients across marketplaces, retail platforms, APIs, and Google Sheets workflows.

Developed web scrapers and automation tools for multiple clients.

Built Selenium and Playwright extraction pipelines.

Integrated WooCommerce, Nike, Adidas, and other APIs.

Automated scraped-data workflows into Google Sheets.

PythonTypeScriptSeleniumPlaywrightAPIsGoogle Sheets

Skills

Grouped by what they help ship.

The strongest signal is not the number of tools. It is the ability to combine frontend, backend, payments, data, and automation into usable products.

Product frontend

Interfaces for dashboards, workflows, onboarding, and mobile apps.

Next.jsReactReact NativeExpoTypeScriptChakra UITailwindshadcn

Backend and APIs

Services, auth flows, webhooks, and integration-heavy product logic.

PythonFastAPIFlaskNode.jsGoREST APIsOAuthRate limiting

Payments and data

Billing, reporting, analytics, storage, and financial workflows.

StripeStripe ConnectFirebaseFirestoreSupabaseMongoDBRecharts

Automation and systems

Data extraction, browser automation, and runtime/control-plane work.

PlaywrightSeleniumApifyBeautifulSoupMCPDockerWebSocketBrowser automation

Achievements

Quantitative strength supports the engineering work.

Academic and competition results sit behind the product story, adding evidence for modeling, problem solving, and technical depth.

M3 Challenge Honourable Mention

Placed 26th of 643 teams with a mathematical modeling paper on homelessness drivers.

A-Level results

A* in Physics, Mathematics, and Further Mathematics, plus A in Computer Science.

Product leadership

Co-founder and CTO experience spanning product architecture, hiring, and end-to-end delivery.

Contact

Useful products start with clear problems.

I am most useful on product-heavy engineering work where the hard part is combining UX, data, integrations, and reliable implementation.