Erons A.
London, UK0Pro
CTO / Co-Founder @UltraPay
Software engineer and founder who has built products end to end three times: founding engineer at a fintech platform, founder of a viral social app scaled to 115,000+ monthly active users, and founder of an API-first AI-inference platform serving around 50 paying organizations.
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Projects
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CostIQ
API-first AI-inference platform
Founded and built an AI-inference platform from the ground up with per-key governance including model access, rate, token and concurrency limits, spend policy. Implemented per-caller usage telemetry, isolated per-organization data planes and an owner console for operators.
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BloomFilter
API for AI agents to autonomously manage domains and email operations
Explored credential-boundary and abuse-prevention patterns for autonomous agents. The API allows agents to register and manage domains and run email operations. Listed on Glama.ai.
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microsandbox
Rust microVM runtime for untrusted code execution
Built a microVM runtime for running untrusted, agent-generated code in isolated, local-first sandboxes, enabling safe execution of agent-generated code with minimal infrastructure overhead.
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Druz
Personal project turned viral app that lets influencers receive anonymous messages from friends, fans, and followers. I designed, developed, and scaled the platform, growing it to over 115K monthly active users few weeks after launch
Experience
Founding Software Engineer
UltraPayDec 2025 — Present · London, UK
Led engineering across a fintech multi-asset spending platform issuing cards, owning technical direction from design through production. Built the async backbone with claim-lease processing, bounded retries, and idempotent webhook reconciliation handling duplicated and out-of-order provider messages. Implemented a double-entry ledger with event sourcing and activation gates validating contract invariants before card spend. Led incident response to a ledger-corruption issue caused by duplicated webhooks, traced the root cause to the ingestion boundary, and rebuilt it idempotent with race-condition tests.
Software Engineer
Luxor TechnologySep 2021 — Dec 2024 · Seattle, Washington, United States
Built on-demand compute provisioning reaching 99.9% reliability using Temporal for stateful workflow orchestration. Led public APIs, embeddable widgets, and a React data-visualization library handling market-driven traffic spikes. Built SSO, RBAC and permissions in Go, cutting authentication support tickets 60% and eliminating 80% of common user errors. Implemented order matching and real-time book updates for financial contract trading.
Software Engineer
eSoft ResponseApr 2021 — Sep 2021 · London, UK
Architected and deployed an analytics dashboard improving management efficiency 35% across a UK franchise network. Built a documented, accessible React UI component library and mentored engineers on best practices through training and joint testing.
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Founder and Software Engineer
DruzApr 2020 — Apr 2021 · Remote
Founded and scaled a viral social app to 115,000+ monthly active users. Sharded the database across a distributed cluster to sustain 99.9% uptime and 40% lower latency under viral traffic spikes, with 80% test coverage through automation.
Education
University of Hertfordshire
Master of Science - MS in Computer Science
Jan 2025 — May 2026
Grade: Distinction
Distributed Systems, Algorithms and +1 skill
University of Abuja
Bachelor of Science - BS in Computer Science
Jan 2018 — Feb 2022
Data Structures and Algorithms, Numerical Methods, Programming Languages, Database Systems
Credentials
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Skills
TypeScriptJavaScriptNode.jsPythonRustJavaNext.jsReact NativeREST APIsevent sourcingoutbox patternidempotencyclaim-lease processingbounded retriescircuit breakersTemporal