I will maintain and grow your website or web app as your monthly senior developer

M
marians302
M
marians302
Marian S

Vetted Pro

Level 2

maintain and grow your website or web app as your monthly senior developer
Full Screen
maintain and grow your website or web app as your monthly senior developer
Vetted by Fiverr Pro

Marian S was selected by the Fiverr Pro team for their expertise.

About this gig

Your website or web app needs someone on call. Not a new freelancer every time something breaks.


I become your senior developer on a monthly plan.


KEEP IT RUNNING

- Fixes, updates and security patches

- Backups and uptime monitoring

- Fast answers when something goes wrong


KEEP IT GROWING

- New features and improvements every month

- SEO and conversion improvements

- AI features where they help your users or your team


WHY ME

- Long-term retainers with US companies, some for years

- Fractional CTO and lead software engineer for a private aviation company, 2022-2026

- 250+ clients since 2014, rated 4.93, US hours are no problem


For custom-coded websites and web apps built with JavaScript or TypeScript: Node.js, Angular, Firebase and similar.


Tell me what you run and what keeps going wrong. I'll tell you which plan fits.

  • Platform

    • Custom

  • Website type

    • E-Commerce store
    • Business
    • Saas
    • Portal

  • Programming language

    • JavaScript
    • TypeScript
    • HTML & CSS
    • React
Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Marian S

Marian S

Vetted Pro

AI Tools, Fractional CTO, Web Apps, Ecommerce, Senior Software Engineer

5.0(7)

Level 2

Marian S is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.

Vetted for

  • Website Development

  • Website Maintenance

  • FromRomania
  • Member sinceNov 2021
  • Avg. response time1 hour
  • Last delivery3 months

  • Languages

    English, Romanian, Croatian, German
Hi, I'm Marian. Senior software engineer and technical partner. I build AI tools, web apps, premium websites and Shopify stores that hold up. One of the most successful freelancers since 2014. 250+ clients, rated 4.93, trusted by US businesses. - Fractional CTO and lead software engineer for a private aviation company (2022-2026) and a US marketplace (since 2026) - Technical partner to a Shopify Plus brand past $10M in sales - Built SelfManager.ai, my own AI SaaS: 400k+ lines, 14 AI features, MCP server, API & Webhooks What are you building?

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