TIAGO
PEREIRA
Full Stack Web Developer
From Civil Engineering to Code -- Building Digital Products with an Engineer's Mindset
Carcavelos, Portugal
Remote / Hybrid (Lisbon area)
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TIAGO
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001 / Manifesto
I DON'T JUST WRITE CODE
I BUILD systems THAT SCALE
The Engineer
Full Stack Developer leading a team of 4 at Sanjow, with 5+ years building scalable React/Next.js applications that collectively attract millions of visits per year. My background includes 8 years in Civil Engineering -- managing infrastructure projects, leading field teams, and diagnosing complex structural problems -- which shaped how I approach software: methodically, with attention to performance, reliability, and real-world impact.
The Builder
I combine hands-on technical expertise with architectural decision-making, mentoring, and cross-functional collaboration across 30+ delivered projects.
Core Declarations
01Technical Leadership
02Architecture & System Design
03Mentoring & Knowledge Sharing
04Complex Problem Solving
05Cross-functional Collaboration
06Performance Optimization
002 / Numbers Don't Lie
Millions
Annual Visits
0+
Projects Delivered
0+
Students Mentored
0
Developers Led
003 / Arsenal
TECH STACK
Frontend
JavaScript5yrs
React.js5yrs
Next.js4yrs
TypeScript4yrs
Tailwind CSS4yrs
Framer Motion2yrs
Zustand2yrs
shadcn/ui2yrs
Chakra UI3yrs
Mantine2yrs
React Hook Form2yrs
Zod2yrs
next-intl2yrs
Redux1yr
Backend
Node.js5yrs
Express.js5yrs
Nest.js2yrs
MongoDB5yrs
PostgreSQL3yrs
Prisma2yrs
Mongoose5yrs
REST APIs5yrs
Stripe4yrs
Resend2yrs
WebSockets2yrs
DevOps & Tools
Git/GitHub5yrs
Vercel4yrs
AWS S32yrs
CI/CD GitHub Actions2yrs
Docker1yr
Cloudflare2yrs
Sentry3yrs
ESLint/Prettier5yrs
Authentication
JWT5yrs
Passport.js4yrs
Clerk2yrs
NextAuth2yrs
Testing & QA
Jest1yr
Playwright2yrs
A/B Testing3yrs
AI / ML
OpenAI API2yrs
LangChain1yr
Pinecone1yr
004 / Work
SELECTED PROJECTS
From entertainment to AI, from education to e-commerce. Every build starts with a concrete constraint and ends with measurable impact.
Education
#01
School's Cool
Freelance team of 2
My first real project and still the hardest one so far. A colleague and I built a large platform for an underprivileged children school that combined social networking, e-learning, live chat, forums, and cloud storage. The complexity pushed me to take side courses while delivering the project so we could keep quality high.
5K+ Users50+ Schools10K+ DAU
Entertainment
#02
GOAT Studios
Freelance team of 2
GOAT Studios is a video editing agency that wanted to showcase its work online in a polished way. We built a fast platform focused on portfolio storytelling, credibility, and conversion.
60% Performance Boost<2s Load Time
Transportation
#03
JFP Taxis
Freelance team of 2
JFP Taxis is a transportation business that wanted a stronger online presence, especially for Boom Festival. We built a clear booking experience so attendees could quickly find services and request rides.
1K+ Rides/Month98% Uptime3min to 30s
Entertainment
#04
Tante Joke Karaoke
Freelance team of 2
Tante Joke Karaoke Band has no fixed singer -- the singer is the audience. A colleague and I built a mobile-first web app where concert attendees select songs and get notified when their turn is near. We also created a backoffice so the band manager can manage songs and call attendees to the stage.
Real-time WebSocketsClerk Auth
E-Commerce
#05
[CLASSIFIED]NDA — Details on request
E-Commerce Platforms
Sanjow
Professional client work delivered at Sanjow, with some solutions built in crash-course style timelines. The focus was scaling traffic, improving conversion, and increasing performance across multiple platforms.
+25% Conversion+40% PerformanceHundreds of Thousands Monthly
AI / Tech
#06
[CLASSIFIED]NDA — Details on request
AI-Powered Applications
Sanjow
Professional applications built through company projects and rapid crash-course initiatives. We shipped practical AI products that handled real request volume while significantly improving response speed.
50K+ Monthly Requests8s to 1.2sRAG Pipeline
005 / Timeline
WHERE I'VE BEEN
From concrete to code. A non-linear path that made me a better builder.
Hybrid
2021 -- Present
01
Full Stack Developer & Team Lead
@ Sanjow
Leading team of 4, front-end architecture, React/Next.js e-commerce and AI apps.
- Code reviews & mentoring junior developers
- 3 major product launches from ideation to production
- A/B testing achieving +25% conversion rates
- 40% performance improvement across platforms
- REST API integrations: Stripe, SendGrid, Stream, Contentful
- Playwright comprehensive testing
- AI applications handling 50K+ monthly requests (OpenAI GPT-4, LangChain, Pinecone)
Next.jsReactTypeScriptTailwind CSSNode.jsExpress.jsPostgreSQLPrismaPlaywrightVercelOpenAI APIMantineChakra UIshadcn/uiZodnext-intlReact-i18nextReact Hook FormStripeRocket Gate
Remote
2021 -- Present
02
Freelance Full Stack Developer
@ Self-Employed
Team of 2, end-to-end custom web apps for entertainment/education/transportation.
- Full project lifecycle: scoping to deployment
- WebSockets, GPS integration, payment systems
- 98% uptime across all client projects
Next.jsReactTypeScriptTailwind CSSFramer Motionshadcn/uiNode.jsExpress.jsPostgreSQLMongoDBMongoosePrismaStripeClerkWebSocketsVercelResendCloudflare TurnstileVercel AnalyticsLangChainPineconeAWS S3Zodnext-intlGSAPDocker
Lisbon (part-time)
2020 -- 2021
03
Teaching Assistant
@ IronHack
Mentored 50+ students in JavaScript, React.js, Node.js, Express.js, MongoDB.
- Guided students through full stack web development bootcamp
- Code reviews and pair programming sessions
JavaScriptReact.jsNode.jsExpress.jsMongoDBMongoose
Portugal
2014 -- 2020
04
Civil Engineer
@ Multiple Companies
8 years across 5 companies spanning research, construction, diagnostics, and infrastructure.
- LNEC: Airport rigid pavements research (2014-2015)
- Grupo H24: Structural engineering challenges (2015-2016)
- OZ Diagnostico: Building pathology diagnostics (2016-2017)
- BuildingClass: Head of Building Pathology Diagnosis (2017-2018)
- DDN/Aguas de Cascais: Water infrastructure supervisor (2018-2020)
Transferable Skills: Team leadership, complex problem diagnosis, client communication, budget management, deadlines, documentation
AutoCADSAP2000RevitMicrosoft Office Tools
006 / Education
FOUNDATIONS
01
2019 -- 2020
Full Stack Web Development Bootcamp
IronHack, Lisbon
02
2011 -- 2014
MSc in Structures and Geotechnics
Universidade Nova de Lisboa FCT
03
2007 -- 2011
BSc in Civil Engineering
Universidade da Beira Interior
PortugueseNative
EnglishAdvanced
HIRE ME
007 / Contact