Freelancers in KonstanzFreelancers in Konstanz
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Nohelia Pereira's avatar
Nohelia Pereira
St Gallen, Switzerland
Product Designer | End-to-End UX/UI & Design Systems
$5k+
Earned
2x
Hired
5.0
Rating
102
Followers
Product Designer | End-to-End UX/UI & Design Systems
Cover image for HeeyCoach | MVP Product Design for Football Coaching Platform
HeeyCoach | MVP Product Design for Football Coaching Platform
1
10
122
Cover image for Designing a Converting Landing Page for Fòir’s MVP Launch
Designing a Converting Landing Page for Fòir’s MVP Launch
2
28
Cover image for Fòir AI-Powered Local Service Marketplace Design
Fòir AI-Powered Local Service Marketplace Design
10
100
Cover image for Designing an E-commerce Website for an Interior Design Store
Designing an E-commerce Website for an Interior Design Store
2
21
Nicolas Leuthold's avatar
Nicolas Leuthold
proWinterthur, Switzerland
Motion Designer and Art Director, 10+ Years in Advertising
New to Contra
Motion Designer and Art Director, 10+ Years in Advertising
Cover image for PostFinance – Explainer Videos
PostFinance – Explainer Videos
1
22
Cover image for Toblerone – Effie 2026 Casemovie
Toblerone – Effie 2026 Casemovie
0
222
Cover image for KADI Frühlingsrollen – Social &
KADI Frühlingsrollen – Social & Online Ads
0
134
Cover image for Jungkraut – Product Cinematics
Jungkraut – Product Cinematics
0
129
Ljiridon Rushiti's avatar
Ljiridon Rushiti
proSt Gallen, Switzerland
Web Development, APIs, Automation & Software QA
New to Contra
Web Development, APIs, Automation & Software QA
Cover image for Zentra — Fintech Engineering, Readiness
Zentra — Fintech Engineering, Readiness & Assurance Independent pre-live fintech engineering project focused on secure payment infrastructure, wallet and ledger architecture, authentication, KYC workflows, idempotent transaction handling, reconciliation, risk controls, operational readiness and evidence-driven assurance. The system includes a Node.js/Express backend, PostgreSQL data layer, structured engineering gates, testing and readiness documentation. It is pre-live and is not represented as real-money production infrastructure.
1
18
Cover image for Synthetic Lab — AI Evaluation
Synthetic Lab — AI Evaluation & Simulation Architecture Independent technical architecture for controlled synthetic evaluation of AI-generated candidates and system mechanisms. Designed around explicit world state, observation boundaries, hidden truth, event generation, failure injection, adversarial testing, baseline/candidate/challenger comparison, scoring, metrics and evidence hashing. Synthetic evidence remains explicitly labeled and separated from real-world validation.
1
19
Cover image for EIE — AI / Automation
EIE — AI / Automation Project Independent software project focused on AI-assisted workflows, automation and system integration. Built as part of broader experimentation with practical AI-enabled software systems and execution workflows.
1
23
Cover image for BlitzPay — Payment Application Independent product
BlitzPay — Payment Application Independent product project focused on building a modern payment application with a clean mobile experience, transaction flows and supporting backend/database architecture. Developed and iterated as a real software product, including Flutter application code and supporting data-layer work.
1
27
Davor Lucic's avatar
Davor Lucic
St Gallen, Switzerland
Fresh Fullstack Solutions for Modern Business
Fresh Fullstack Solutions for Modern Business
Cover image for Jehle Umbauten Website Overhaul
Jehle Umbauten Website Overhaul
0
7
Cover image for The Lash Quartier – Premium Beauty Website
The Lash Quartier – Premium Beauty Website
0
9
Cover image for Young Visionary: Modernizing Client Websites
Young Visionary: Modernizing Client Websites
0
3
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