commit 9f2a71c author Alex Rivera date Aug 06 2026

Backend-leaning software engineer who ships and cleans up after themself.

I build reliable systems — APIs, data pipelines, and the occasional CLI tool nobody asked for but everybody ends up using. Currently focused on distributed systems and developer tooling.

skills.diff+4 −2
languages: [Python, TypeScript, Go]
- role: Junior Developer
+ role: Senior Software Engineer
- scale: single-server deployments
+ scale: distributed, multi-region systems
+ mentoring: 3 engineers onboarded

Things I've built

A few repos that hold up. More on GitHub.

ledgerline / event-sourced ledger

An append-only ledger engine for financial event sourcing, built to replay years of history in seconds without losing an audit trail.

Go ★ 412 source ↗
queuecast / job orchestrator

A lightweight task queue with visual retry graphs, built after debugging one too many silent Celery failures at 2am.

Python ★ 268 source ↗
shelfmap / inventory API

A warehouse inventory service with real-time stock sync across 40+ retail locations, handling ~2M requests/day.

TypeScript ★ 156 source ↗
dotplot / CLI diagnostics

A terminal tool that turns Postgres query plans into readable diagrams, so nobody has to squint at EXPLAIN ANALYZE output again.

Go ★ 891 source ↗

What I reach for

Not a bar chart — a working set. Here's what's load-bearing versus what I keep around out of habit.

+ Go, Python, TypeScript — daily drivers
+ PostgreSQL, Redis — where the state lives
+ Kubernetes, Terraform — how it ships
  gRPC, Kafka, Docker — comfortable, used weekly
jQuery — retired with honors

Career, versioned

Each role as a release — what shipped, what changed.

v3.0.0 2023 — present
Senior Software Engineer · Northline Systems
  • Led migration of the core billing service from monolith to event-driven architecture, cutting p99 latency by 61%.
  • Introduced on-call runbooks and SLOs that reduced incident MTTR from 45 to 12 minutes.
  • Mentored three engineers through their first production on-call rotation.
v2.0.0 2021 — 2023
Software Engineer · Ferrovia Labs
  • Built the internal inventory API now handling 2M+ requests a day across 40 retail sites.
  • Shipped a job orchestration layer that replaced a fragile cron-job setup.
v1.0.0 2019 — 2021
Junior Developer · Kettlecorn Studio
  • Started on internal tooling, ended up owning the deploy pipeline for six client projects.

Say hello

Open to interesting backend and infra work.

$ whoami
alex rivera — software engineer, based in Toronto
$ curl mailto:hello