Founding / Staff Backend & Platform Engineer Go • Node.js • AWS • Realtime • Solar / Energy • Streaming Media
Remote – Bolivia (US Time Zones) • Contract via Harmoni LLC • Open to US Visa Sponsorship Email • LinkedIn • GitHub • Download Résumé
- Automated solar electrical design at Sunrun (largest U.S. residential solar provider): cut ~1 week → ~2–3 hrs hands‑on per project across ~1K designers; 240+ jurisdiction rules engine; ~$200K/yr cost savings via PCS/export compliance.
- Scaled interactive live streaming (Go backend) to reliably handle 60M+ monthly users & shipped realtime features that drove ~3× engagement at Caffeine.
- Built crypto payment rails (+~40% revenue) & a React/TS component library (feature velocity ~50% faster) in high‑growth media/gaming stacks.
- Delivered real‑time IoT telemetry platform for 25K+ connected pool devices (Hayward via FusionHit) & slashed query latency from 40‑80s → <3s.
If you’re scaling product fast and wrestling with rules, devices, data models, or realtime performance — let’s talk.
| Domain | What I Deliver | Why It Matters |
|---|---|---|
| Energy / Solar | Automated CAD diagrams, jurisdiction code engines, hardware catalogs | Faster design cycles, fewer permitting surprises, real cost savings |
| Realtime / Streaming | Low‑latency Go + Node microservices, chat/presence layers, interactive overlays | Engagement, retention, monetization at scale |
| Payments & Revenue | Crypto rails, transactional services, multi‑market support | Unlock new geos, reduce friction, grow topline |
| IoT / Telemetry | Device ingestion, fleet dashboards, SLA analytics | Proactive ops, lower support costs |
| Platform Productivity | Component libraries, CI/CD, observability, rule validation pipelines | Ship faster with confidence |
- Stella Electrical Design Automation: Parse structured electrical forms → generate full AutoCAD one‑line diagrams automatically.
- Cycle Time Win: Cut ~1 week manual design to ~2–3 hrs hands‑on; ~1K solar electrical designers supported.
- Jurisdiction Rules Engine: 240+ states/regions/AHJs enforce export limits, equipment codes, protection schemes.
- Hardware Hub (~1K SKUs): Ensures BOM accuracy + compliance; reduces permit rework.
- PCS / Export Limiting: ~$200K/yr cost savings from avoided redesigns & field changes.
- Scale: Optimized Go services & infra to support 60M+ MAU streaming load.
- Engagement: Realtime interactivity (chat overlays, virtual gifts, reactions) drove ~3× engagement.
- Migrated legacy architecture → Go/Node microservices; safer deploys & scale headroom.
- Hardened PostgreSQL data boundaries for security/compliance.
- Built global sports betting platform (Go/Node) serving 70K+ early users.
- Launched crypto payment/deposit rails → ~40% revenue uplift.
- Created React/TS component library adopted across org; ~50% faster feature delivery.
- Realtime telemetry from ~25K connected pool devices (AWS + C# + React Native).
- Field‑service dashboard with chemical alerts, equipment status, maintenance history.
- Perf win: Cut query latency 40‑80s → <3s; improved SLA + fewer manual checks.
- Sports Management Dashboard: Live match ops; ~2s scoring latency; supported officials during events.
- TradeDash Supply Ops: Bootstrapped PO/SO, shipment, ETA tracking dashboard for trading workflows.
- Additional SaaS, media, and integration work (Node, React, cloud).
I’m available for:
- Founding / Early Eng roles (seed → Series B)
- Staff / Senior Backend or Platform roles (scaling product, multi‑region, device or rules heavy)
- Short strategy/architecture engagements (domain modeling, rules engines, realtime scaling, CAD/automation pipelines)
Engagement options: Contract via Harmoni LLC (U.S. entity) or discuss visa sponsorship.
You can download my latest résumé here:
Download Résumé (PDF) ← Update path after you add the file to the repo.
Other formats (ATS .docx/.txt) available — email me.
Email: samueleguino97@gmail.com LinkedIn: linkedin.com/in/samueleguino GitHub: github.com/samueleguino
Some performance & impact metrics come from roles documented in my résumé and public company materials; certain financial & internal adoption metrics are approximate and based on internal program data (non‑confidential simplifications).
Thanks for stopping by! 👇 If you build in energy, realtime, or hardware‑meets‑software spaces,