Freelance CTOs

Freelance CTOsFreelance CTOs

Projects People

maxDnipro, 49000

Software Architect | From Idea to Production | 140+ Projects

$50k+: Earned

5x: Hired

5.0: Rating

59: Followers

Software Architect | From Idea to Production | 140+ Projects

Cover image for Maxsip Telecom | CTO working on scalable telecom solution

Maxsip Telecom | CTO working on scalable telecom solution

1

43

Cover image for Status IM | Web3 platform and Facebook's react-native port

Status IM | Web3 platform and Facebook's react-native port

1

51

Cover image for Making Mobile Chat Feel Instant & Native

Making Mobile Chat Feel Instant & Native

0

3

Cover image for DAO app for personal growth across every life area

DAO app for personal growth across every life area

0

5

Fractional CTO for Growth-Stage & Enterprise Shopify Brands

$50k+: Earned

1x: Hired

5.0: Rating

35: Followers

Club

Fractional CTO for Growth-Stage & Enterprise Shopify Brands

Cover image for Neptune Retail Solutions Site Development

Neptune Retail Solutions Site Development

0

28

Cover image for MOEN Smart Water Monitor Device Shopify Website

MOEN Smart Water Monitor Device Shopify Website

1

29

Cover image for Suja Website Development & Rebuild Launch

Suja Website Development & Rebuild Launch

1

113

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Two.Zero Agency

maxBarcelona, Spain

Certified FlutterFlow Expert Agency. TOP 1 Worldwide.

$100k+: Earned

16x: Hired

4.8: Rating

150: Followers

Coach

Agency

+1

Certified FlutterFlow Expert Agency. TOP 1 Worldwide.

Cover image for High-Fidelity Training-Tracker Prototype for Fast Run

High-Fidelity Training-Tracker Prototype for Fast Run

1

5

220

Cover image for Gestmotor – WebApp for Vehicle Administration & Legal Procedures

Gestmotor – WebApp for Vehicle Administration & Legal Procedures

1

4

108

Cover image for MyGlampings – MVP Booking App for Campsites and Glamping

MyGlampings – MVP Booking App for Campsites and Glamping

2

75

Cover image for Applai – Matching Platform for Internships & Talent Discovery

Applai – Matching Platform for Internships & Talent Discovery

2

93

proDublin, Ireland

Ping me from the edge of innovation | CTO at RaptorLabs.dev

$1k+: Earned

2x: Hired

5.0: Rating

406: Followers

Expert

Ping me from the edge of innovation | CTO at RaptorLabs.dev

Cover image for Our favorite creative platform really

Our favorite creative platform really doesn't stop surprising. So just the 6 days after the last rank up, tier went up again today, Contra nicely surprised with another small but sustainable growth and recognized execution quality once again. This is possible just because each and every one of you active and engaged community members in this beautiful supportive community, with a motivated spirit and thrive to move forward, tirelessly learns and colllaborates to widen the horizons, break the walls, dive in unknown, and let's continue doing it.

14

15

824

Cover image for Building a Premium Agentic AI Engineering Website for RaptorLabs

Building a Premium Agentic AI Engineering Website for RaptorLabs

6

7

Cover image for Happy to share that I became an official @Base44 partner! Lo...

Happy to share that I became an official @Base44 partner! Looking forward to a new challenges and to smartly use as much as the Base44 platform features that are allowing me to develop a highly complex applications tailored to fine-tuned client requirements and development guidelines. Should you need an app for variety of industries, specialties and custom business needs feel free to reach out. https://app.base44.com/partners/691df3f780542e3207bab460

2

10

597

Cover image for Jumping in @Contra quest! I’m Bob — a software architect, pr...

Jumping in @Contra quest! I’m Bob — a software architect, product designer + full-stack developer with a cybersecurity (https://cyberlinksec.com) background. I’ve spent 20+ years shipping user-facing web apps and sites across the worlds top corporations (https://igotanoffer.com/blogs/mckinsey-case-interview-blog/top-consulting-firms#most) where UX, performance, and security are built in from day one (OWASP-minded flows, secure auth/forms/payments, clean systems, ISO 27001 compliant practices). I help founders and teams launch MVPs and growth experiences that convert, scale, and hold up under real-world risk—without drama. When I’m not building secure, UX-rich web products, you’ll probably find me underwater. Drop your URL and I’ll reply with one practical UX improvement and one practical security improvement you can ship today.

2

4

38

712

Aurelien GERIER

proLos Angeles, USA

Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI

$50k+: Earned

5x: Hired

4.9: Rating

101: Followers

Top

Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI

Cover image for WhatsApp & RCS Integrated Platform for ParaVet.live

WhatsApp & RCS Integrated Platform for ParaVet.live

1

37

Cover image for Traklist

1

86

Cover image for Cerise Peyi

3

79

Cover image for Led delivery of a cloud-native

Led delivery of a cloud-native K-12 student wellness platform that helps counselors monitor wellbeing, surface at-risk students, and act early—balancing product velocity with FERPA/COPPA-aware design and multi-tenant isolation (API RBAC, PostgreSQL RLS, district-scoped analytics). → Owned technical direction and delivery rhythm across a TypeScript monorepo (pnpm/Turbo): backend API, web app, shared packages, DB migrations, CI/CD gates, and staged deploys to GCP (e.g. Cloud Run), aligning engineering work with roadmap and release risk. → Orchestrated an AI assistant for counselors on Google Vertex AI (Gemini): system prompts, safety settings for K-12, function-calling tool design, multi-round tool loops, and strict separation so UI widgets render from verified tool results—not model hallucinations—with tracing/feedback hooks (e.g. Langfuse) for quality and auditability. → Drove access-control and compliance posture for sensitive student data: role/permission middleware, tenant-scoped queries, and defense-in-depth database policies—documentation and evidence suitable for enterprise security reviews (e.g. SOC 2–style narratives). → Partnered on product and program management: phased feature rollout, PR/branch discipline, and clear ownership of scope vs. risk so pilot schools could onboard without compromising data boundaries. → Shaped integrations and platform boundaries: Firebase auth, Neon PostgreSQL + Drizzle ORM, real-time patterns, BigQuery analytics isolation, and operational practices (testing, lint, type-check) that keep the stack maintainable at scale. → Established a disciplined, AI-accelerated delivery model—not ad-hoc prompting: Cursor rules and Claude skills/agents for repeatable workflows; Husky + lint/type-check/test gates; GitHub Actions CI/CD; Cursor Cloud Agents for automated PR review; and daily monitoring of E2E, coverage, and critical issues—owning AI-orchestrated implementation while enforcing accuracy, consistency, and observability

0

278

I build websites for awesome clients!

$250k+: Earned

3x: Hired

5.0: Rating

318: Followers

Top

I build websites for awesome clients!

Cover image for Project Read

28

689

Cover image for Figma Website

24

1.8K

Cover image for Project Read AI

Project Read AI

6

514

Cover image for Independence starts here

Independence starts here

7

1.4K

HMI Interface designer. UX/UI for embedded screens & devices

$5k+: Earned

2x: Hired

28: Followers

HMI Interface designer. UX/UI for embedded screens & devices

Cover image for CCTV E-commerce platform & branding

CCTV E-commerce platform & branding

0

7

Cover image for HypeFin - corporate branding & website

HypeFin - corporate branding & website

0

5

Cover image for HMI interface for medical equipment

HMI interface for medical equipment

0

1

Cover image for HMI design for a laboratory

HMI design for a laboratory blood testing device

2

369

Tonya Yemelyanova

Kraków, Poland

Software strategy consultant and mobile solutions architect

Software strategy consultant and mobile solutions architect

Cover image for CleverFleet - Fintech SaaS Platform for Global Payroll | CTO.

CleverFleet - Fintech SaaS Platform for Global Payroll | CTO.

0

17

Cover image for Digitising Outdated Paper Workflows for Automotive Enterprise

Digitising Outdated Paper Workflows for Automotive Enterprise

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9

Cover image for Software Implementation for Smart Cities | Technical lead

Software Implementation for Smart Cities | Technical lead

0

10

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