I am a full-stack web developer and engineer with 4+ years of experience building secure, scalable web applications for technical and engineering-driven domains. I specialize in React, TypeScript, Node.js, and modern backend architectures, with strong expertise in SQL and NoSQL (MongoDB) databases. My background spans both front-end and back-end development, allowing me to deliver complete, production-ready solutions.
Beyond software, I bring hands-on experience in structural, composite, and aerospace engineering, having worked on applications and tools used for engineering analysis, data processing, and technical decision-making. This dual background allows me to translate complex engineering workflows into intuitive, reliable software—particularly for aerospace, marine, and industrial applications.
I also have a strong background in cybersecurity, with practical experience securing web infrastructures, configuring firewalls, hardening servers, and performing vulnerability assessments. Security and performance are integrated into every project from the design stage.
🏆 Forbes-featured project
My work on Ophset, a carbon-credit trading platform combining modular photobioreactors and a digital marketplace, was featured in Forbes after winning the Innovation Labs 2023 Grand Prize. This project highlights my ability to deliver impactful, technically rigorous solutions at the intersection of software, engineering, and sustainability.
Key Skills
Full-stack development (React, TypeScript, Node.js, Express)
Engineering-focused web applications and technical tools
SQL & NoSQL database design (PostgreSQL, MongoDB)
Secure system architecture and deployment
Cybersecurity, firewalls, vulnerability assessment
Structural, composite, and aerospace domain knowledge
Selected Projects
CLSA – Web-based composite laminate and structural analysis tool
Dorini.ro – Secure, high-performance platform for a luxury transport company
TableJaponeze.ro – E-commerce and event platform for automotive communities
I focus on high-quality, secure, and technically accurate solutions. If you need a developer who understands both engineering requirements and robust software architecture, I’d be glad to help.
Shopify
WordPress
Python
WooCommerce
Website
CAD & CAM Software
React
Cybersecurity Tool
Structural Engineering
Gabriel S.
Bucharest, Romania
$125/hr
4.9
166 jobs
I help founders, investors, and corporate teams make faster, better capital and strategy decisions through institutional-grade financial modeling, valuation, and strategic analysis.
As a former Big 4 consultant at Deloitte and PwC, with an MBA and an Engineering degree, I bring a rare combination of finance, strategy, and technical rigor. I have supported engagements that helped clients raise over $500M in capital, delivering models and analyses used in real investment and board-level decisions.
𝗔𝗿𝗲𝗮𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
Financial Modeling & Forecasting
Integrated 3-statement models, budgeting, long-term planning, scenario and sensitivity analysis.
Valuation & Transaction Analysis
DCF, comparable companies, precedent transactions, LBO modeling, M&A support, and due diligence.
Financial Planning & Performance
FP&A, cash flow planning, performance tracking, and investor reporting.
Fundraising & Investor Materials
Pitch decks, investment memorandums, and financial narratives for capital raising.
Strategy & Business Analysis
Market research, business planning, competitive benchmarking, and growth strategy.
Sector-Specific Modeling
SaaS metrics (CAC, LTV, churn), energy and infrastructure, real estate models, and project finance.
𝗧𝘆𝗽𝗶𝗰𝗮𝗹 𝗲𝗻𝗴𝗮𝗴𝗲𝗺𝗲𝗻𝘁𝘀
Fundraising preparation, investor reporting, acquisition analysis, budgeting and long-term planning, business case development, and turnaround or restructuring situations.
I design every deliverable for decision-making clarity, with clean, audit-ready models, transparent assumptions, and built-in flexibility for scenario and sensitivity analysis. My work is structured to be used directly by founders, investors, and senior management.
Experience spans AI and SaaS, energy and infrastructure, real estate, fintech, manufacturing, retail, public markets, and Web3.
Tools and technical stack include advanced Microsoft Excel, VBA automation, financial forecasting systems, and cap table modeling.
Top Rated and Expert-Vetted on Upwork, with consistent client feedback highlighting analytical depth, speed, and reliability.
𝗖𝗹𝗶𝗲𝗻𝘁 𝗙𝗲𝗲𝗱𝗯𝗮𝗰𝗸:
🗨️ “Exceptional as always, this is my 5th or 6th project with Gabriel and each one has been a smooth and efficient process with no delays. Have already engaged with him for another contract.”
𝗟𝘂𝗸𝗲 𝗗𝗲𝗮𝘀𝘆
🗨️ “Gabriel is extremely professional and completed the financial model on time. In addition to producing an excellent finished product he gives great advice, implementing things that we didn't think of.”
𝗔𝗻𝗱𝘆 𝗔𝗷𝗮𝘆𝗶
🗨️ “I can't wait to work with him again! He's a highly skilled and multi-faceted collaborator who's determined to help you cross the finish line.”
𝗗𝗶𝘅𝗶𝗲 𝗛𝗶𝗰𝗸𝗺𝗮𝗻
Financial Modeling
Valuation
Financial Analysis & Valuation
Financial Planning
Financial Analysis
Microsoft Excel
Business Planning & Strategy
Due Diligence
Financial Projection
Business Consulting
Business Plan
Business Analysis
Strategic Planning
Management Consulting
Real Estate Financial Modeling
Data Analysis
Budgeting & Forecasting Software
Project Finance
Accounting
Financial Plan
Adrian C.
Bucharest, Romania
$45/hr
5.0
22 jobs
Top Rated | 100% Job Success | 100+ Completed Projects
I turn operations bottlenecks into scalable, audited automation systems.
Former FinTech COO. Director of AI & Business Automation at M.A. Whately.
What clients say:
"Adrian is a total pro. Just looking at his CV you can tell he's not the
average freelancer - and the work proved it." - Nicolas P.
"Extremely knowledgeable in N8N, AI and general automation. We are hiring him
for our next project." - AI Workflow client
"Great professional. Fast, smart, clear. Already doing a new contract." - GHL client
WHO I WORK BEST WITH
Founders, COOs, and Operations Directors who have already identified the
bottleneck - they just need someone who can architect AND implement without
hand-holding. If you're still exploring whether automation is right for you,
I'm probably not the right fit yet.
THE HYBRID ADVANTAGE
Most automation freelancers break when drag-and-drop fails. I don't - because
I work in both directions:
• Low-code speed: n8n, Zapier, Make - production-ready in days, not weeks
• High-code depth: Python, JavaScript, custom APIs - for logic no visual tool
can handle
• Executive lens: I design to KPIs, compliance requirements, and ROI - not
just deliverables
SECURITY & COMPLIANCE
As former COO of HighCrowd (EU-regulated crowdfunding platform under National
Bank supervision), I design every workflow with GDPR-safe data flows,
Human-in-the-Loop checkpoints, strict error handling, and full audit trails.
Bank-level rigor on every build.
SELECTED RESULTS
• Invoice processing (accounting firm): 12 hrs/week → under 30 mins | 96% reduction
• Investor onboarding (HighCrowd, regulated): 45 mins → 8 mins | 82% reduction,
ISO-standard compliance
• E-commerce ops (Innovium): 10,000+ orders across 5 EU countries with a 2-person team
• Manufacturing scale (3Descu): 10 → 200+ 3D printers in 3 years | ISO 9001 certified
STACK
n8n · Zapier · Make · Python · JavaScript · SQL · REST/GraphQL · OpenAI · Claude · AWS
CERTIFICATIONS
• AWS Cloud Solutions Architect - Amazon Web Services (2025)
• IBM AI Product Manager - IBM (2025)
• FinTech Foundations - Wharton, University of Pennsylvania
• MBA in Entrepreneurship & Business Administration
Message me with your current bottleneck. If automation can solve it, I'll tell
you exactly how - and give you an honest read if it can't.
Automated Workflow
AI Development
n8n
Zapier
API Integration
Process Optimization
Data Analysis
CRM Development
Operations Management Software
Python
SQL
Automation
Inventory Management
Database Design
Business Process Automation
Nicu B.
Bucharest, Romania
$67/hr
4.9
14 jobs
I’m a business strategist and growth partner with 14+ years of experience, 20+ ventures co-founded, one successful exit, and millions raised in funding.
⭐️⭐️⭐️⭐️⭐️ “Nicu really took charge of the project and managed it successfully end to end. His technical skills and patience were outstanding as well. I highly recommend him!”
Teo from BlackCab Ride Sharing
What I bring to every project:
✅ Clarity — I cut through the noise and uncover blind spots.
✅ Strategy — I design actionable roadmaps for growth.
✅ Execution — I build systems, teams, and processes that scale.
I know how frustrating it can be to hit a wall — I’ve been in your shoes, scaling startups from zero to millions in revenue. My edge is turning complex problems into simple, executable solutions that move the needle fast.
📈 Selected Results:
⭐️ Scaled a SaaS platform to $50k MRR in 8 months (avg client spend $350, LTV $3k+).
⭐️ Bootstrapped and exited a company after hitting $3M/year revenue and 30+ employees.
⭐️ Grew traffic from 0 → 2M users in 1 year with a robust SEO + content strategy.
⭐️ Delivered 20x revenue growth in 12 months for a ride-sharing company.
⭐️ Increased calls booked by 70% and doubled show-up rates, driving a 46% sales increase in 6 months for a Berlin agency.
How can I help grow your business?
✔️ Business development & project management
✔️ Leadership
✔️ Marketing strategy & roadmaps
✔️ Growth hacking & sales funnels
✔️ SEO / SEM / CRO
✔️ Marketing automation & lead generation
✔️ Content machines & scaling processes
Your satisfaction is essential to me — I deliver with precision, on time, and with clear communication.
Let’s build clarity, scale, and growth into your business. 🚀
— Nicu
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