SaaS · 2024
AVAILABLE FOR FREELANCE — Q1 2025
I build product interfaces people remember.
Hi, I'm Alex Carter — a freelance product engineer & UI/UX designer crafting fast, accessible web experiences for founders and design-led teams.
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v.2025
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Alex Carter
Product Engineer · Designer
01 — ABOUT
A builder who treats interfaces like infrastructure.
For the last seven years I've helped startups, design studios and product teams ship software that actually feels good to use. My background is unusual: I started in visual design, moved into frontend engineering, and never left either — so I can take an idea from a rough Figma frame to a deployed, observable production system without losing the design intent along the way.
I care about the small things. The 16ms it takes an animation to settle. The contrast ratio on a sub-label nobody is supposed to read. The way a form should forgive you. Those details compound into the feeling of a product, and that feeling is what I'm here to build.
Based in
Lisbon, Portugal
🌍
Working hours
UTC+0 · Flexible
⏱
Languages
English · Portuguese · Spanish
💬
Currently accepting 2 new clients for Q1
02 — SKILLS
A toolbox built around shipped products, not buzzwords.
Depth in frontend, fluency in design, and enough backend to own the whole thing when needed.
⚛️
Frontend Engineering
- React
- Next.js
- TypeScript
- Astro
- Tailwind CSS
- Framer Motion
- GSAP
✏️
Design & Prototyping
- Figma
- Design Systems
- User Research
- Wireframing
- Interaction Design
- Prototyping
🛠
Backend & Infra
- Node.js
- Postgres
- Supabase
- Edge Functions
- Cloudflare Workers
- Vercel
🧭
Product & Strategy
- Discovery Sprints
- Roadmapping
- Analytics
- A/B Testing
- Technical Writing
03 — SERVICES
How I can help your team ship.
◐
01 Product Design
End-to-end design for web and mobile. From research and IA, through to high-fidelity prototypes and a design system you can actually hand off.
- +User flows & wireframes
- +High-fidelity UI
- +Design system
- +Usability testing
From €4,500
Inquire
◑
02 Frontend Engineering
Production-grade React, Next.js and Astro builds. Type-safe, accessible, and instrumented from day one. No half-finished MVPs.
- +Component library
- +API integration
- +Performance budget
- +CI/CD setup
From €6,000
Inquire
◒
03 Design ↔ Code Bridge
Stuck between a Figma file and a real product? I sit in the middle — design and implement in the same week, with no translation loss.
- +Rapid prototyping
- +Design QA
- +Tokenization
- +Engineering handoff
From €3,000
Inquire
◓
04 Fractional Product Lead
Embedded with your team 1–2 days a week. Roadmap, scoping, hiring, and unblocking — the unglamorous work that makes product actually move.
- +Roadmap
- +Sprint planning
- +Stakeholder reviews
- +Hiring support
From €2,800 / mo
Inquire
04 — SELECTED WORK
Recent projects I'm proud of.
See all on GitHub 
E-commerce · 2024
Northwind Commerce
Headless storefront for a sustainable fashion label. Custom checkout, multi-currency, and a 38% lift in mobile conversion over their old Shopify theme.
AstroShopify HydrogenStripeSanity
Mobile · 2023
Pulse Health
Wellness tracking iOS app — designed the full flow, built the React Native prototype, and ran a 12-person usability study that shaped the final build.
React NativeFigmaUser Research
05 — EXPERIENCE
Seven years across studios, scale-ups, and solo.
2022 — Present
Lisbon · Remote
Freelance Product Engineer
Independent
- ▸ Shipped 14 products for clients across fintech, e-commerce, and developer tools.
- ▸ Specialise in early-stage work — taking Figma frames or vague briefs to shipped MVPs in 4–8 weeks.
- ▸ Long-term partnerships with three clients (retainers ranging 8–20 hrs / week).
2020 — 2022
Berlin
Senior Product Designer
Forge Studio
- ▸ Led design on 6 client engagements, from discovery to launch.
- ▸ Built the studio's first design system (Figma + token export pipeline).
- ▸ Mentored 4 junior designers; ran weekly critique and onboarding.
2018 — 2020
Amsterdam
Frontend Engineer
Linear Cloud
- ▸ Owned the marketing site and onboarding flow for a B2B SaaS.
- ▸ Cut LCP on the homepage from 4.1s → 1.2s and lifted trial signups by 24%.
- ▸ Shipped the first version of the in-app onboarding checklist still in use today.
06 — TESTIMONIALS
What clients say back.
"
Alex is the rarest kind of collaborator — someone who can sketch in Figma at 9am and ship the component to production by lunch. He saved our launch.
MO
Maya Okonkwo
Founder, Lumen Analytics
"
We hired Alex to do 'some frontend work' and ended up with a re-thought product surface, a new design system, and a team that learned how to work together better. Worth every euro.
JL
Jonas Lindqvist
CTO, Northwind Commerce
"
The 12 weeks Alex was embedded with us moved our roadmap further than the previous 12 months. He doesn't disappear after handoff either — still answers Slack questions a year later.
PS
Priya Shah
Head of Product, Forge Studio
07 — CONTACT
Got something to build?
Tell me about your project — timeline, budget, and what's keeping you up at night. I reply within 24 hours, usually faster.