Build resilient Elixir apps your team loves to maintain

We combine hands‑on consulting and education to improve your system design, accelerate delivery, and make performance a repeatable outcome.

We don't just deliver features—we grow your team's judgment so good design sticks.

Bruce Tate

Bruce Tate

+10 books • 2 Jolt Awards • "Seven Languages in Seven Weeks"

James Edward Gray II

James Edward Gray II

Co-author "Designing Systems with OTP" • Created Ruby's standard CSV library

Partner with the authors See our work
elixir_system.ex
$ iex -S mix
Erlang/OTP 27 [erts-15.0] [64-bit] [smp:8:8]
Interactive Elixir (1.18.0)
iex(1)> PaymentSupervisor.start_link([])
{:ok, #PID<0.234.0>}
SUPERVISOR TREE
├── PaymentProcessor [running]
├── DatabasePool [running]
└── NotificationService [running]
LIVE METRICS
Processes: 847,291
Uptime: 99.99%
Memory: 1.8 GB

Real‑world outcomes

Teams that ship faster with fewer incidents

From startups to global platforms, teams use our design guidance and Elixir expertise to achieve reliability, velocity, and scale.

BBC

88% Cost Reduction

Reduced from 100 servers to 12 while handling MORE traffic and increased personalization. Zero downtime during breaking news spikes and major sporting events.

50+ million daily users • Sub-millisecond latency

Watch ElixirConf talk

Cyanview

Super Bowl–scale reliability

Coordinating visual fidelity across 200+ cameras with Elixir: best-in-class networking, resilience, and rapid iteration powering live broadcast shading.

Used at the Super Bowl, Olympics, NFL, NBA, ESPN • No hard failures

Read case study

Discord

150M Users

Migrated from Go to Elixir to handle millions of concurrent connections. Achieved 40x performance improvement in message processing.

Millions of concurrent connections • 40x performance boost

Read case study

Companies like Pinterest, Moz, Lonely Planet, and many others are also using Elixir to solve their scaling challenges.

View more success stories

When teams struggle

Symptoms we fix

Delivery velocity

Large PRs sit in review, features are chronically late, work piles up without clear planning.

Right process over more process—structured planning cuts delivery time in half

Reliability

Incidents repeat, high number of reported bugs, unpredictable on-call rotations.

Clear supervision trees reduce incident frequency and blast radius

Rigid, hard-to-change code

High cognitive load, change amplification, hidden coupling makes simple changes expensive.

Better boundaries reduce maintenance cost and development friction

Expert team

Educators who build

Bruce Tate and James Edward Gray II, authors of "Designing Elixir Systems with OTP." We don't just deliver features—we grow your team's judgment so good design sticks.

Bruce Tate

Bruce Tate

System Architecture Expert

10+ Books Published • 2× Jolt Award

Established figure in the Elixir community and author of widely-used technical guides. Author of "Designing Elixir Systems with OTP", "Programming Phoenix", "Programming Phoenix LiveView", and "Adopting Elixir". 20+ years delivering from IBM to startups.

James Edward Gray II

James Edward Gray II

Performance Optimization

Creator of language-standard libraries

Co-author of "Designing Elixir Systems with OTP" and master of data modeling across the Elixir stack. Creator of FasterCSV and HighLine. Expert in debugging, performance tuning, and full‑stack architecture with 20+ years of collaboration.

Paulo Valim

Paulo Valim

Full-Stack Elixir & UX
800K+ Subscribers • EdTech Founder

Full-stack Elixir developer and educator who democratized chemistry education for millions. Expert in Phoenix, LiveView, and user-focused design that drives business outcomes.

Maggie
+

Extended Team

Our core team includes additional specialists who join projects based on specific needs.

Our Services

How we help

Architecture & OTP Design

Design sessions and working spikes to model supervision, message flow, and failure handling.

  • Supervision trees and boundaries
  • Back‑pressure and process orchestration
  • Operational simplification
  • Outcomes: predictable behavior under load

Web Delivery (Phoenix & LiveView)

Product delivery with real‑time UX; we ship and uplift your team as we go.

  • LiveView real‑time interfaces
  • APIs and integrations
  • Testing and CI guidance
  • Outcomes: delivery with enablement

Performance & Reliability Lab

Profiling, query tuning, back‑pressure, and load testing; performance as a capability.

  • System profiling and query optimization
  • Back‑pressure and supervision improvements
  • Load testing and capacity planning
  • Outcomes: measurable, repeatable performance

Technical Leadership

Architecture advisory and fractional CTO: strategy, org design, and decision clarity.

  • Technology strategy and roadmap aligned to outcomes
  • Architecture reviews, boundary definitions, and governance
  • Team structure, hiring, and mentoring tech leads
  • Outcomes: clear direction, faster decisions, lower risk

AI-Resilient Development

Build reliable systems and team judgment for AI-augmented development workflows.

  • Architecture patterns for unreliable components
  • Testing strategies for AI-generated code
  • Team protocols for AI tool adoption and oversight
  • Outcomes: AI productivity gains without reliability regression

Team Accelerator

Focused enablement sprints: pairing, reviews, and targeted curriculum for your codebase.

  • Pairing on real work to transfer judgment
  • Structured reviews and architectural guidance
  • Targeted lessons mapped to your codebase
  • Outcomes: faster PRs, safer deployments

Make quality and speed your default

Partner with educators who build. We deliver and level up your team at the same time.

  • Free 30‑minute discovery
  • A custom enablement plan for your team
  • Collaborative delivery with measurable outcomes

Get Started Today

Email Us
info@grox.io

Let's build capability while we ship.