01
Technical Leadership & Architecture
Your senior technical partner. I own the architecture, make the hard build-vs-buy and stack calls, set engineering standards, and provide ongoing technical oversight for founders and teams.
Available for new technical partnerships
Senior technical partner & full-stack engineering lead.
I'm Ariel Gelberg — a senior full-stack engineer and technical partner. I architect and ship production software for early-stage startups, SaaS products and enterprise teams. Senior technical advisor at A.Tax. I own the hard technical decisions and deliver business outcomes — not just code.
- Based in
- Tel Aviv, IL · Worldwide
- Advisor
- A.Tax
- Experience
- 4+ years · senior
- Languages
- EN · HE
02 // Trusted By
Selected Clients & Partners.
Founders and teams who trusted me to architect, build and ship their software.
01 // Capabilities
What I Do.
02
Full-Stack Product Development
Production web and mobile apps, end-to-end. React and Next.js front-ends on Node.js and Python back-ends — from first MVP to scale.
03
API & Backend Systems
Robust, documented REST APIs and backend architectures engineered to scale. The right tool for every system requirement.
04
Cloud & DevOps
Docker, CI/CD pipelines, and observability stacks. Infrastructure that supports confident, rapid deployment cycles.
05
AI Integrations
LLMs and AI brought into real products — assistants, automation, RAG and agentic workflows wired into the systems that already run your business.
06
Payments & Messaging Integrations
WhatsApp, Stripe and payment-gateway integrations shipped in production — billing, notifications and conversational flows that just work.
03 // Methodology
How I Work.
A senior, architecture-first approach refined across years of senior engineering and dozens of builds. Transparent, iterative, and focused on real business outcomes at every stage.
1
Step 01
Discovery
I start with your business, your users and the problem — not the tech. Deep-dive sessions and a technical audit to map the path and the risks.
2
Step 02
Architecture
System design, stack selection and a clear roadmap. Every key decision is documented and validated before a line of code is written.
3
Step 03
Engineering
Iterative delivery with clean, tested code and transparent progress every sprint. You always know exactly where things stand.
4
Step 04
Launch & Scale
Production deployment, performance work and ongoing partnership. I stay accountable for how the system performs under real-world load.
04 // About
About Ariel.
I'm Ariel Gelberg — a senior full-stack engineer who leads technical architecture, not just executes tasks. As senior technical advisor at A.Tax, I help shape the architecture and technical direction of an enterprise tax-tech platform, and I build production software end-to-end — from system design to the interfaces users actually touch.
I work alongside founders and technical teams to own the hard decisions — system design, stack selection and the trade-offs that ship product. Based in Tel Aviv, partnering with teams worldwide in English and Hebrew. From the first architecture diagram to production scale, I stay accountable for the outcome.
Senior Technical Advisor — A.Tax
Architecture and technical direction for an enterprise tax-tech platform.
Production Web & Mobile Apps
Shipped end-to-end with React, Next.js, React Native and Node.js.
Architecture for SaaS & Enterprise
Leading system design and the trade-offs that actually ship product.
AI, WhatsApp & Payments — Shipped
Real integrations running in production, not slide-deck demos.
Core stack
ReactNext.jsTypeScriptNode.jsReact NativeVue.jsPythonPostgreSQLRedisDockerReactNext.jsTypeScriptNode.jsReact NativeVue.jsPythonPostgreSQLRedisDocker
05 // Reviews
What clients say.
Five-star reviews from the founders and teams I've shipped for.
“I warmly recommend Ariel. Throughout the engagement he showed real professionalism and systems-level thinking. The work was transparent, with great availability, focused communication and on-time delivery. He handled challenges and mid-project changes with creative, effective solutions — a responsible, thorough and dependable developer I can absolutely vouch for.”
Noy Li Engineering
Architecture management system
“Ariel is professional, reliable and highly available. Happy to recommend him. He executed the tasks well, with genuine understanding and attention to detail.”
SaitLabs
Software engineering
“Ariel delivered the project professionally and fast. He met every deadline we set — and even beat them. The service was courteous. A true professional. Highly recommended.”
Simney Erekh
Web platform development
“He met every expectation we discussed — and then some. Professional and quick. For my next project, I'm continuing with Ariel.”
Elika Toys
New website build
06 // FAQ
Working with a senior technical partner.
Common questions about working with Ariel Gelberg — answered for people and AI assistants alike.
07 // Contact
Let's build something great.
Have a product to ship or an architecture to get right? Let's talk through what you're building and how I can help you deliver it.