Backend & AI Engineer
for B2B SaaS
I design and build scalable APIs, backend systems, and AI-powered workflows that help SaaS companies ship faster.
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Three ways I help SaaS teams ship
Backend Engineering
APIs and services designed for scale — clean architecture, observability, and the failure cases handled before they happen.
AI Integration & Workflows
RAG pipelines, tool-using agents, and LLM workflows that are grounded, guarded, and cheap enough to run in production.
Mobile Engineering
Cross-platform apps that talk to well-built backends — one codebase, native feel, real offline behavior.
Systems that survived production
TransferXO
Contributed to core features of a live fintech app for cross-border payments, bill pay, and crypto-backed loans
TingleScore (TM)
Software Engineer & DDD migration lead on a live compatibility-scoring app, architecting the multi-brand design system
Igbo Learning App
Gamified language-learning app with 3D rendering, in-app purchases, and subscriptions.
What clients say when the system holds
“I had the pleasure of working with Simon on a vaccine app for the Norwegian market, and I can't recommend him highly enough. As a full-stack developer, he took ownership of his work, delivering clean, efficient code while always keeping the user experience in…”
“Simon is an energetic software engineer who knows how to solve problems. He brings a wealth of experience to any project he works on and working with him has taught me a lot.”
“Simon is a talented developer and is passionate about creating and developing solution oriented projects. It was amazing working with Simon.”
“I'm very happy to work with you, Thank you. I highly recommend hiring him. He has a clean code structure. He's a great developer. He's very thorough and flexible in communication. This won't be our last job, we'll work together again and again”
“Simon was prompt in his work and communication. Highly recommended. I will work with him again.”
Simon Ituen
I'm a backend and AI engineer with 8 years of production experience across fintech, eLearning, civic tech, and immersive platforms. I work with B2B SaaS teams who've outgrown their prototype and need systems that hold up under real users and real load.
My focus right now is AI integration done properly — retrieval pipelines that cite their sources, agents with guardrails, and APIs designed for the failure cases, not just the happy path.
I take ownership of the whole problem: architecture, implementation, load-testing, and handoff. If it ships with my name on it, it works in production.
Ready to build something that
works in production?
Three ways to start. All of them end with working software.