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Hello, I'm

Linder Hassinger

AI Tech Lead, AI Consultant, Python & Django Expert, Senior Software Developer, Full Stack Engineer, Next.js Expert

AI Tech Lead and consultant. I take AI to production for companies that already have a product — backed by 8+ years building the web, mobile, and iOS systems it has to plug into.

Claude APIClaude CodeOpenAI APIPythonDjangoReactNext.jsTypeScript

Shipped work for

SNYFanDuelMadison Square GardenLonely PlanetTecsup
Services

How we work together

Three ways to start. All three end in something running in production, not a PDF.

1–2 weeks

AI audit

Your team wants to use AI but nobody knows where to start — or there's a prototype that never quite ships.

  • I review the product, the data, and the current stack
  • I identify where an LLM pays for itself — and where it doesn't
  • Cost, latency, and risk estimates per use case

Deliverable: a prioritized plan with the first feature ready to build.

4–8 weeks

AI feature to production

You know what you want to build. You need someone to take it from idea to something that survives real users.

  • Prompt, context, and evaluation design
  • Integration with your backend and UI, streaming included
  • Guardrails, rate limiting, and cost control

Deliverable: the feature in production, with your team able to maintain it.

Monthly

Ongoing technical advisory

You have an engineering team and need AI judgment without adding a senior head count.

  • Architecture review and model decisions
  • Code review and pairing with your team
  • Async availability plus a weekly session

Deliverable: your team making better calls without waiting on me.

Let's talk about your project

Your case doesn't fit any of these? Reach out anyway — the first call is free and exists to find out whether this makes sense.

About Me

AI Tech Lead and consultant with 8+ years shipping production software. I lead AI engineering at WotDev and advise companies on putting AI into real products — deciding where an LLM actually earns its place, then taking it from prototype to production. Deep on Python and Django on the backend, React and Next.js on the front. Before that I built at scale: sports streaming on Apple TV (SNY, FanDuel) and global travel platforms (Lonely Planet). Based in Lima, Peru, working globally.

Lima, PeruRemote global
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Years Engineering
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Projects Delivered
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Technologies
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Years Building with AI

Skills & Technologies

AI and Python first, on top of eight years of production engineering

AI & LLM Engineering

Deciding where an LLM earns its place in a product — and where it doesn't. Prompt and context design, evaluation, streaming UX, cost and latency tradeoffs, and the guardrails production use requires.

Claude API
OpenAI API
Claude Code

Frontend

React
Next.js
TypeScript
Tailwind CSS
Framer Motion
Redux
React Native
Expo
HTML5
CSS3

Backend

Python
Django
Node.js
Express
Rails
GraphQL
Prisma
WebSockets

Tools & Infra

PostgreSQL
Supabase
Docker
AWS
Vercel
Git
GitHub Actions
Stripe
Figma
Framer

Featured Projects

AI tools I built and use, plus the platform work behind them

AI LinkedIn Optimizer screenshot
ai2025

AI-powered tool to optimize your LinkedIn profile for maximum visibility and recruiter appeal.

Next.jsTypeScriptClaude APIClaude Code+1
Case study
DevConf screenshot
fullstack2024

Developer conference platform with schedule management, speaker profiles, and session booking.

Next.jsTypeScriptPrismaPostgreSQL+1
Case study
Live demo

Ask about my work

This is a real Claude API integration, grounded in the content of this site — the same kind of feature I build for clients. Streaming, rate limited, and it declines what it doesn't know.

Answers are generated and can be wrong. For anything that matters, email Linder.

This is the kind of thing I build for clients

Let's talk about your project

Work Experience

9+ years across AI, web, mobile, and iOS — at agencies, startups, and international brands

AI Tech Lead / Senior Software Developer

WotDev

Oct 2024 – Present

Software consultancy — AI Tech Lead, and engineering consultant across multiple simultaneous client projects

AILLM APIsClaude APINode.jsTypeScriptAWSNext.js
  • AI Tech Lead — lead AI engineering across client work: scoping where an LLM genuinely fits, designing the prompting and evaluation layer around it, and carrying features from prototype through to production
  • AI consulting for client companies — advise engineering teams on integrating LLMs into existing products, covering model selection, cost and latency tradeoffs, and the guardrails production use actually requires
  • Tech Lead for Umana — architected the backend of an HR/recruitment SaaS, designing REST APIs, database schema, and AWS infrastructure (EC2, RDS, S3) for a scalable multi-tenant system
  • Full stack developer for Corazón Puro — integrated Stripe for subscription flows, webhook handling, and secure checkout; delivered critical performance improvements
  • Senior Frontend Developer for Lonely Planet (Red Ventures) — contributed to large-scale migration from Next.js to Astro for a travel platform serving millions of monthly visitors

Senior Software Developer

VML

Jan 2022 – Aug 2024

Global software agency — embedded engineer for major US media and sports brands

SwiftUIReactNext.jsReact NativeNode.jsRuby on Rails
  • SNY (SportsNet New York) — Built a greenfield sports streaming app from scratch in SwiftUI, launching simultaneously on iOS and Apple TV; full multi-platform release (iPhone, iPad, Apple TV) in a single accelerated cycle
  • FanDuel — Built a greenfield sports betting & streaming web platform from zero to production in Next.js, working in a monorepo shared with React Native mobile
  • MSG Go (Madison Square Garden) — Developed full-stack features and led migration to a new video streaming player, modernizing media delivery infrastructure across devices

Software Instructor

Tecsup

Mar 2021 – Jul 2024

Technical university — Lima, Peru

ReactPythonSwiftFirebase
  • Taught Programming Fundamentals, Advanced Mobile Programming, and Intro to Databases to cohorts of 20–40 students per semester
  • Served as thesis advisor, guiding students through full-cycle software projects from proposal to final defense
  • Developed curriculum and practical exercises covering React, Python OOP, and mobile development with Swift

Full Stack Developer

Cuik Hotels

Jan 2020 – Jun 2021

Hotel tech startup — Lima, Peru

LaravelNode.jsReactReact NativeDockerAWSSwiftJava
  • Shipped hotel management apps to App Store (iOS) and Google Play (Android), managing the full release cycle
  • Built a WhatsApp ChatBot integrated with Twilio for automated promotional offers, boosting guest engagement
  • Developed a CMS-style admin panel for hotel staff to manage content and UI configurations without developer intervention

Software Developer

Perú Masivo

Jul 2019 – Jan 2020

Logistics company — Lima, Peru

LaravelAWSReactDockerDialogflow
  • Designed and built an ERP covering logistics and maintenance workflows, replacing manual spreadsheet-based processes
  • Built a task assignment and tracking system for managers with progress dashboards and exportable reports
  • Implemented a gamified bonus system tied to task scoring, improving team accountability

Mobile Developer

DogHouser

May 2019 – Mar 2020

Pet-care marketplace startup — Lima, Peru

Node.jsAWSReactSwiftJava
  • Developed native iOS and Android applications for a pet-care marketplace connecting dog owners with trusted caregivers
  • Built the web platform frontend enabling user onboarding, profile management, and booking flows

Software Developer

Guvery Latam SAC

Aug 2017 – Apr 2019

E-commerce logistics startup — Lima, Peru

PHPNode.jsGCPAzureDockerSwift
  • Implemented Social Login (Google & Facebook) across buyer and traveler user flows, reducing signup friction
  • Architected a microservices layer for scheduled push notifications, decoupling delivery logic from the monolith
  • Developed and shipped iOS app features using Swift; extended core product with new buyer and traveler modules
Taking on projects for next quarter

Tell me about your project

I answer every message within 24 hours. If there's a fit, I'll propose a 30-minute call.