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Sergiu M.
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Sergiu M.

AI Software Engineer | Full-Stack AI Apps & Automation

I help companies ship production-ready AI and full-stack software faster: AI integrations, workflow automation, data pipelines, React/Node.js/Python apps, and cloud infrastructure built with senior engineering review. If you need more than a demo, I can help you turn an idea or internal process into a working product with clear scope, secure architecture, QA, monitoring, and a practical delivery plan. What I can build: - AI-powered web apps and internal tools - LLM integrations with OpenAI, Anthropic, or self-hosted models - AI-assisted software delivery workflows for product teams - Workflow automation and data pipelines - React / Next.js frontends and Node.js / Python backends - APIs, dashboards, admin panels, and SaaS features - Cloud deployment, CI/CD, monitoring, and production hardening Where I create the most value: - You have an AI idea but need a senior engineer to turn it into a real product - Your team wants to speed up development with AI-assisted SDLC without losing code quality - You need to integrate AI into an existing SaaS, CRM, marketplace, or internal platform - You need a fast MVP, pilot, or technical roadmap before committing to a larger build My delivery approach is pragmatic: - Quick discovery to define the business goal, users, risks, and success metrics - A clear technical plan with architecture, milestones, and trade-offs - AI-assisted implementation for speed, with senior human review for architecture, security, and critical logic - Automated QA, code review, and release practices so the result is maintainable - Production-minded deployment with monitoring, cloud infrastructure, and documentation Recent relevant work includes AI-assisted development process consulting, AI infrastructure planning, scalable React/API product development, and senior Salesforce/AppExchange code review advisory. I am a good fit if you want a reliable senior engineer who can move fast, communicate clearly, and deliver production-grade software instead of experiments. Send me a short brief about your product, workflow, or AI use case. I will reply with a technical plan, roadmap, and a practical MVP estimate.

🇬🇧London, United Kingdom$40/hr100% JSS5.00 (2)Since Aug 2010
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Earnings and projects

MRR
$5.4k

Last 6 months ÷ 6

World#4,729 / 412k
🇬🇧Country#134 / 10.7k
Revenue, last 30 days
$2.9k

Last 6 months: $32k

World#12,986 / 412k
🇬🇧Country#313 / 10.7k
Total earnings
$77k

Billed in all: $80k

World#51,874 / 412k
🇬🇧Country#1,160 / 10.7k
Per project
$26k

$16k in the last 6 months

World#3,934 / 412k
🇬🇧Country#62 / 10.7k
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇬🇧Country#1,969 / 10.7k
Projects in all
3
33% fixed67% hourly
World#304,140 / 412k
🇬🇧Country#8,252 / 10.7k

Earnings, last 30 days

$80.4k+$2.9k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$76k$78k$80k$82kOct 8Oct 23Nov 7

Skill rankings: Top 2% in Database Development

Ranked by MRR among everyone on Upwork with the skill.

  1. #10Database Development567 freelancers · 🇬🇧 #2Top 2%
  2. #38Cloud Architecture966 freelancers · 🇬🇧 #1Top 4%
  3. #59Web Application Development2,030 freelancers · 🇬🇧 #2Top 3%
  4. #83CI/CD3,691 freelancers · 🇬🇧 #2Top 2%
  5. #156Generative AI5,038 freelancers · 🇬🇧 #6Top 3%
  6. #176SaaS Development5,201 freelancers · 🇬🇧 #4Top 3%
  7. #206AI App Development4,708 freelancers · 🇬🇧 #7Top 4%
  8. #243OpenAI API6,930 freelancers · 🇬🇧 #5Top 4%