# Erons A.

**Founding Software Engineer** — London, UK

> 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.

Career Archetype: **Launchpad Trailblazer** (HS-MG) — One of the first Launchpad Trailblazers on Saywise

## Links

- LinkedIn: https://linkedin.com/in/eronmmer
- GitHub: https://github.com/Eronmmer

## Experience

### Founding Software Engineer, UltraPay (2025-12 – 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.

### Founder and Software Engineer, Tick (2024-09 – present)
Tick is an independent product studio building enterprise and open-source tools that teams and individuals actually need

### CTO and Co-Founder, Ultra App (2023-09 – present)

### Software Engineer, Luxor Technology (2021-09 – 2024-12)
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 Response (2021-04 – 2021-09)
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.

### Founder and Software Engineer, Druz (2020-04 – 2021-04)
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

### Master of Science - MS in Computer Science, University of Hertfordshire (2025-01 – 2026-05)
Grade: Distinction Distributed Systems, Algorithms and +1 skill

### Bachelor of Science - BS in Computer Science, University of Abuja (2018-01 – 2022-02)
Data Structures and Algorithms, Numerical Methods, Programming Languages, Database Systems

## Projects

### 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.

### 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.

### 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.

### 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

### Valibot-Fast-Check
Open-source TypeScript library that simplifies property-based testing by connecting a testing framework with a validation library. It helps generate arbitraries for fast-check from schemas defined using Valibot

### clean-url
An open source TypeScript library that strips tracking parameters and clutter from URLs. Feed it a nasty Spotify or Amazon link full of utm_source, fbclid, and tracking junk, and it gives you back the clean version. Supports custom rules, AMP handling, redirect params, and reports back what it removed. Published on npm as @tickhq/clean-url.

## Skills

TypeScript, JavaScript, Node.js, Python, Rust, Java, Next.js, React Native, REST APIs, event sourcing, outbox pattern, idempotency, claim-lease processing, bounded retries, circuit breakers, Temporal, gRPC, webhooks, PostgreSQL, database sharding, reconciliation pipelines, SSO, RBAC, sanctions and compliance, isolated data planes, audit logging, Docker, GCP, Cloudflare, Kubernetes, component library design, real-time data visualization, accessible UI, founding-team product building, full-stack delivery, reliability engineering, AI platform tooling, Algorithms, Data Warehousing, Open Source, npm, Distributed Systems, Go (Programming Language), React.js, Open-Source Development, Testing, Unit Testing, Software Development, Web Development, Strategic Planning, Public Speaking, Full-Stack Development

---
Source: https://saywise.com/erons (last modified 2026-10-06T11:36:13.237Z)