Elixir & Erlang Engineering
Systems that stay up under load.
Elixir and Erlang for teams that need real concurrency, fault tolerance, and long-lived processes. Distributed systems, OTP applications, Phoenix APIs, and LiveView frontends — built to run for years, not quarters.
What we build
Distributed systems
Multi-node Elixir clusters with distributed state, presence tracking, and location-transparent messaging. Applications that scale horizontally without the coordination overhead of shared-state architectures.
OTP applications
Supervision trees designed for fault isolation. If a process dies, the supervisor restarts it. If a subsystem crashes, the rest of the application keeps serving traffic. This is what OTP is actually for.
Phoenix APIs and services
HTTP APIs with Channels for real-time features. WebSocket support, presence, pub/sub, and background job processing — all inside one runtime with no external message broker required.
LiveView frontends
Server-rendered interactive UIs with no client-side JavaScript framework. Real-time updates over WebSockets. Fewer moving parts, less to maintain, faster to ship.
Background processing
Oban, Broadway, and GenStage pipelines for job queues and streaming data. Built on the same concurrency primitives as the rest of your application, not bolted on.
Legacy Erlang migration
Incremental migration from older Erlang codebases to modern Elixir, or interoperability where you need both. We don't rewrite what doesn't need rewriting.
Performance and profiling
BEAM VM tuning, observer-based analysis, memory profiling, and hot path optimization. Finding the bottleneck instead of guessing at it.
Tools and ecosystem
The stack we work with, from the language core to the operational layer.
Elixir
Erlang / OTP
Phoenix
LiveView
Ecto
Oban
Broadway
GenStage
Nx (numerical)
Mix
Hex
ExUnit
PropCheck
:observer
Telemetry
Docker / Releases
How an engagement works
Week 1 — Discovery
We review your existing codebase, architecture, and operational setup. If you're starting greenfield, we review the problem and the constraints. You get a written summary of what we found and what we would change.
Weeks 2–6 — Build
Feature work, architecture, or migration — whichever the engagement calls for. Pull requests reviewed by you. Tests written. Documentation kept current as we go, not bolted on at the end.
Week 6 — Handover
Architecture documentation, runbooks, and a walkthrough with your team. If you have in-house engineers, we work alongside them from day one so nothing is a surprise at handoff.
Ongoing — Support
Monthly retainers for teams that want ongoing engineering support, code review, or on-call. Available but not required.
What we don't do. We don't sell frameworks or resell infrastructure. We don't push Elixir onto teams that don't need it — if Go, Rust, or Node is the right answer for your problem, we'll say so. We don't rewrite working systems for the sake of it.
When Elixir is the right choice
Elixir is not the answer to every problem. It's the answer to specific ones:
- You need to hold thousands or millions of concurrent connections open simultaneously
- You need soft real-time behavior with predictable latency under load
- You need fault tolerance where a crashed subsystem doesn't take down the whole application
- You need to run long-lived processes with state that survives partial failures
- You need real-time features — presence, chat, live updates — without adding a message broker
- You need a system that can be deployed, upgraded, and debugged in production without downtime
If none of those describe your situation, Elixir is probably not the right tool. We'll tell you that during the first call rather than sell you an engagement you don't need.
What you get
- Working code, tested and reviewed, committed to your repository
- Architecture documentation your team can maintain after handover
- Deployment and operational runbooks
- Direct access to the engineer doing the work — no account managers, no handoffs
- An honest assessment of whether Elixir is the right choice before you commit
Discuss a project
Tell us what you're building or what you're trying to fix. We'll tell you whether Elixir is the right tool and what an engagement would look like.