I'm Natnael Tadele, a senior full-stack software engineer trusted by startups and enterprises in Germany, the USA and the UAE. Web, mobile and AI, designed end-to-end, deployed to real users, and kept fast under load.
Trusted by teams across three continents
Top Rated Plus places freelancers in roughly the top 3% on Upwork, earned through long-running contracts with perfect feedback. Every metric below is verifiable on my profile.
Verify on UpworkClient reviews
Unedited feedback from completed contracts, verifiable on my Upwork profile.
“We really can't say enough good things about working with Natnael. From day one, he was reliable, professional, and just easy to work with. During his time with us he contributed across 5 projects and was promoted to lead developer. He has a positive attitude, great communication and was genuinely invested in doing good work, not just checking boxes. Having him on the team made everything smoother and honestly more enjoyable. We're really grateful for everything he brought to this collaboration, and if the opportunity comes up again, we'd love to work with him once more. Five stars, no hesitation.”
Full Stack Developer
Verified Upwork client · Oct 2025 - Aug 2026 · 1,456 hours
“Natnael was a pleasure to work with. He delivered quality backend work, communicated clearly, and was always professional.”
Developer · Full Stack & Mobile
Verified Upwork client · Oct 2025 - Jan 2026 · 291 hours
“It was a pleasure working with him. Communication was smooth, deadlines were respected, and the overall collaboration was professional and efficient. I would definitely consider working together again in the future. Recommended!”
Full Stack Developer
Verified Upwork client · Oct 2025 · Short engagement
“Natnael is a great individual, we look forward to the next job.”
Lead Developer · Full Stack & Mobile
Verified Upwork client · Jul - Oct 2025 · 457 hours
The workshop
Most of the work is not the first version. It is the load test, the rollback plan and the query that turned out to be doing a full table scan. This is how that part gets handled.
Green build or it does not ship
Every change goes out behind a passing pipeline. No manual steps, no fingers crossed.
Latency and cost are requirements
Budgeted up front and measured in production, not patched in once the bill arrives.
One engineer, architecture to deploy
No gap between whoever designed it, built it and is on the hook when it breaks.
move your cursor over the desk
What I do
End-to-end SaaS and enterprise products with Next.js, React, Django and Node.js. From architecture and APIs to polished, fast frontends deployed on AWS.
LLM-powered features that hold up in production: RAG pipelines, vector & BM25 search, agentic workflows, and AI automation, with cost and latency engineered down.
Multi-platform Flutter apps backed by real-time APIs: customer apps, merchant dashboards, kiosks and kitchen displays operating as one system.
High-traffic APIs, third-party integrations and infrastructure that stays up: Docker, Kubernetes, CI/CD and AWS, with caching and query optimization baked in.
Measured impact
Replaced SQL LIKE queries with BM25 + vector-based search in an enterprise system at Elunic (Germany), then cut latency further with caching and query optimization.
QuickSync's sync engine is sized for roughly 5,000 merchants running about 22 connected storefronts each. At one inventory webhook per store per minute that is 6.6 million events an hour, and over 158 million a day. I cut critical API time by 52% with concurrent processing to keep that pipeline inside its window.
Architected KiwiKrave's food-ordering ecosystem (customer apps, merchant dashboards, kiosks and KDS) running live restaurant operations every day.
Connected Shopify, Amazon, Etsy, Square, eBay and Clover into one near-real-time inventory synchronization engine.
Selected work
Lead Engineer · SaaS Product
AI-driven Shopify SaaS with LLM-powered automation and video generation pipelines. I own the backend APIs, billing flows and core architecture, and drove AI cost and latency down to make the unit economics work.
Lead Developer · Germany
Rebuilt document search inside an established enterprise codebase with BM25 and vector-based retrieval (~92% faster), shipped AI-powered features for internal and client-facing tools, and was promoted to Lead Developer, setting technical direction and reviewing the in-house team's code.
Software Developer · Dubai, UAE
High-traffic inventory synchronization platform serving 10,000+ active users. Merchants sell across Shopify, Amazon, Etsy, Square, eBay and Clover with reliable, near-real-time sync, after I cut critical API time by 52%.
Full-Stack Engineer · US Startup
Multi-platform food ordering ecosystem: customer mobile apps, merchant dashboards, self-service kiosks and kitchen display systems. I architected the backend APIs, core business workflows and on-demand delivery relay integration.
Full-Stack Developer
Restaurant discovery platform whose initial Node.js backend MVP I built. It grew to 920+ users, 420+ restaurants, 5,970+ reviews and 15,880+ dishes.
Experience
Oct 2023 - Present
Clients in Germany, the USA and the UAE
Production systems for international clients across consumer, SaaS and enterprise domains. Top Rated Plus, 100% Job Success, 2,200+ hours. Trusted to independently design, implement and deploy features in live environments. The engagements below sit inside this practice.
Oct 2025 - Present
Enterprise Software · Germany
Rebuilt document search with BM25 and vector-based retrieval inside an established enterprise codebase, shipped AI-powered features for internal and client-facing tools, and was promoted to Lead Developer, setting technical direction and reviewing the in-house team's code.
Apr 2025 - Present
AI SaaS Product
Leading an AI-driven Shopify SaaS: LLM automation, video generation pipelines, billing and core architecture.
Mar 2024 - Oct 2025
Dubai, UAE
Built and maintained a high-traffic inventory sync platform for 10,000+ active users across six major e-commerce channels.
Dec 2022 - Mar 2024
Google-backed Academy · Addis Ababa
Led and mentored 15 undergraduates in Python, data structures, algorithms and Flutter at Africa to Silicon Valley.
2019 - 2024
Addis Ababa University
Alongside intensive competitive programming training in data structures and algorithms with A2SV, where I solved 400+ problems on LeetCode and Codeforces.
Toolbox
Let's build
I take on a small number of serious projects at a time: full builds, AI features, or rescuing systems that need to scale. Tell me what you're building and I'll reply within 24 hours.
Addis Ababa, Ethiopia · Working worldwide (remote)