Resume

Summary

Backend and infrastructure engineer with 7+ years across fintech, DeFi and DevOps. I build systems that move money (FX routing, banking-partner integrations, exchange SDKs, on-chain settlement) and the cloud platforms they run on. Fluent in Go, Rust, TypeScript and Python, with deep AWS, GCP, Terraform and Kubernetes experience. Published technical writer on LogRocket and freeCodeCamp.

Experience

1. Jun 2026 – Present

   Support Engineer · WeWire

   FX liquidity

   • ›Building the rate-provider layer for WeWire's FX liquidity project: a strategy-pattern abstraction over rate providers with global and per-customer routing, so quotes can be sourced from several liquidity providers without changing existing behaviour.
   • ›Wrote the architecture decision record, the FX routing architecture page and the "adding a rate provider" guide the team builds against.

   Regulatory

   • ›Built the SEC Ghana VAMSS regulator API in stacked phases: API-key auth, replay protection, HMAC-signed responses, rate limiting and cursor pagination, then exchange profile, KYC and compliance-alert endpoints. KYC is read live from the verification provider rather than copied locally.
   • ›Found and fixed a rate-limiter DI collision during end-to-end testing that was silently affecting the customer-facing API's throttling.

   Banking partners & KYC

   • ›Led end-to-end integration of FirstBank Ghana for GHS virtual account issuance, replacing the incumbent provider with zero disruption through a staged rollout.
   • ›Built a polling-based deposit reconciliation service for a partner with no webhook support, and resolved a multi-stage TLS incident (expired cert, SAN mismatch, untrusted CA) that was blocking go-live.
   • ›Fixed KYC gaps blocking USD account issuance via Bridge (missing place of birth, beneficial-owner postal code fallback) and extended the public API with new KYC fields.

   Incidents & support

   • ›Root-caused a production payout bug (floating-point balance comparison causing false insufficient-balance failures) and shipped the fix with regression tests.
   • ›Traced customer-impacting payment and KYB incidents through CloudWatch request-level logs, including a misrouted GBP payment resolved with a banking provider.
   • ›Supported ~15 teams through WeWire's HACKHIVE 2.0 hackathon and judged ~18 submissions.

   TypeScript · NestJS · Prisma · AWS · REST APIs · Sumsub · OpenPayd · Banking-as-a-Service · CI/CD

2. Mar 2026 – Aug 2026

   DevOps / Infrastructure Engineer (Contract) · Rocksteady Technology

   Performance & reliability

   • ›Led the production rollout of a reports-service overhaul, replacing a Kubernetes Job per report with a persistent Redis-backed worker pool (Java/Spring) and cutting report generation from ~10 minutes to ~8 seconds.
   • ›Resolved a cascading multi-system outage on a customer-facing demo environment (masked DB misconfiguration, ~1,600-commit deployment drift, frontend build defect, ingress misrouting, broken legacy sync) the same day.
   • ›Recovered 34,000+ records of inaccessible operational data from a legacy PostgreSQL path, and designed a live two-way change-data-capture pipeline after flagging a consistency risk.

   Cost reduction

   • ›Drove consolidation of 8 QA/non-prod environments onto a single shared KIND host, targeting ~$19k/month of non-prod AWS spend.
   • ›Built it end to end: Terraform-provisioned EC2 host, SSM remote ops, IAM for ECR and Secrets Manager, ingress-nginx with VPN routing, and an S3-staged Helm render/apply pipeline, wired into Prometheus, Loki and Grafana.

   Platform & on-call

   • ›Migrated tenant frontends to a CloudFront CDN architecture (external-dns, version-cookie routing) across dozens of production tenants.
   • ›Consolidated prod and non-prod Alertmanager routing into a single on-call Slack channel, and built idempotent operator CLIs to replace one-off SQL fixes.
   • ›Served on the weekly 24-hour on-call rotation.

   Python · TypeScript · Bash · Terraform · AWS · Kubernetes · Helm · Docker · ArgoCD · Jenkins · GitHub Actions · PostgreSQL · MongoDB · Redis · RabbitMQ · Elasticsearch · Prometheus · Grafana · Loki · Alertmanager

3. Nov 2025 – Dec 2025

   Blockchain Engineer (Contract) · Jeroid Pay

   WhatsApp-native crypto trading

   • ›Built DeFi infrastructure with multi-chain settlement (Solana, Base, Polygon), fiat on/off-ramps and KYC via Smile ID.
   • ›Designed an event-driven architecture with PostgreSQL state, Twilio webhook message routing and LLM intent classification (Groq).
   • ›Built stateful conversation flows supporting concurrent multi-user transactions with atomic settlement across chains.

   Rust · PostgreSQL · Solana · Base · Polygon · Fireblocks · Twilio · Docker

4. Oct 2024 – Jul 2025

   Senior Infrastructure Engineer · Stride Labs

   Token economics automation

   • ›Built the automated STRD buyback-and-burn system, running auctions every 10 minutes as a Kubernetes CronJob and burning ~5.3M STRD a year.
   • ›Implemented swap routing over the Osmosis Swap Router API with multi-pool routes and slippage protection, plus IBC transfers via Skip API with PFM detection and 2-hop fallback.

   Indexing & analytics

   • ›Adapted the Uniswap V3 subgraph for Stride Swap with concentrated-liquidity tick histograms, full Matchstick test coverage, and deployed to Goldsky, saving $3,600/month versus The Graph's hosted service.
   • ›Built the stBGT points-program indexer on Berachain: a FastAPI service with caching, daily indexing jobs and PostgreSQL.

   Bots & infrastructure

   • ›Built Berachain production bots: a POL swapper via Ooga Booga, a validator boost-cycle operator with Merkle proof verification, and a real-time slashing detector.
   • ›Cut GCP costs by ~$5k/month by consolidating 16 microservices into 8, and moved the TEE bot from JSON files to PostgreSQL on Kubernetes with Helm.

   Python · FastAPI · Golang · Solidity · TypeScript · PostgreSQL · Docker · Kubernetes · GraphQL · The Graph · Goldsky · GCP

5. Jun 2023 – Sep 2024

   Lead Software Engineer · Cloudax Holdings

   • ›Led a team building crypto-native products (blockchain oracles, banking integrations, P2P trading) from scratch to the first 2,000 users.
   • ›Built the GCP infrastructure with Terraform from a greenfield start, plus Prometheus and Grafana monitoring and alerting.
   • ›Wrote backend APIs and smart contracts for on-chain functionality, and Bash/Python tooling to remove manual operations.

   Terraform · GCP · Bash · Python · TypeScript · PostgreSQL · Prometheus · Grafana · Solidity

6. Dec 2022 – Jun 2023

   Blockchain Researcher · Halborn Security

   • ›Researched zero-knowledge proofs and L2 scalability, and built smart contract security tooling and zkSNARK proofs of concept.
   • ›Wrote technical content read by ~2.1k developers a month.

   Golang · Solidity · Rust · Python

7. Jan 2023 – Present

   Rust Engineer & DAO Member · DAO DAO

   • ›Contributed to the DAO DAO CosmWasm contracts used by DAOs across the Interchain: active thresholds for the CW4 voting module, NFT ID address queries, and tests for the governance and membership modules.

   Rust · CosmWasm · Cosmos SDK

8. Dec 2021 – Jan 2023

   Software Engineer · IOD Cloud Technologies

   • ›Built cloud infrastructure and automation for clients including Cisco, Logz.io and Zoho with Terraform and Docker, and benchmarked AWS ECS against EKS to guide orchestration choices.
   • ›Designed observability stacks with Prometheus, Grafana and OpenTelemetry, and wrote 15 technical guides on Kubernetes, observability and CI/CD.

   Golang · Python · Docker · Kubernetes · AWS · Prometheus · Grafana · OpenTelemetry

9. Mar 2019 – Nov 2021

   Software Engineer · ReachExt K.K. (EJable.com)

   • ›Built and maintained backend services and REST APIs in Python (Flask) and Go for the EJable.com content platform, with AWS (EC2, Lambda, S3) and CI/CD.
   • ›Mentored junior engineers and wrote 12+ technical articles on cloud, security, blockchain and DevOps.

   Python · Flask · Golang · PostgreSQL · AWS · Docker · Redis

Skills

Languages

Go, Rust, TypeScript, Python, Solidity, Bash

Backend

NestJS, FastAPI, Flask, gRPC, REST, GraphQL, Prisma

Data & messaging

PostgreSQL, Redis, MongoDB, Kafka, RabbitMQ, Elasticsearch

Cloud & DevOps

AWS, GCP, Terraform, Kubernetes, Helm, Docker, ArgoCD, GitHub Actions, Prometheus, Grafana, Loki

Fintech & chain

Banking-as-a-Service, KYC/KYB, FX, Ethereum, Solana, Cosmos, The Graph

AI

Qwen, Kokoro TTS, RAG, Groq

Writing

24 published technical articles: LogRocket (8), freeCodeCamp (1), DEV (15). Essays at theghostmac.codes/blog.

Education

• B.Eng. Mechatronics Engineering · Federal University of Abeokuta
• Topics in Mathematics with Applications in Finance · MIT OpenCourseWare
• Building Cloud Computing Solutions at Scale · Duke University (Coursera)