Real-time is easy in a demo and hard in production: reconnection storms, proxies that buffer, fan-out across servers, mobile radios that sleep, and the video call that works in the office but not on the client’s hotel Wi-Fi.
We build real-time features and products — operational dashboards, collaborative editors, order tracking, alerting, chat, and WebRTC voice and video — with the transport chosen for the problem (SSE, WebSockets, WebRTC, or plain polling when that is honestly enough) and the infrastructure to run it.
What we build
- —Live dashboards and monitoring views over streaming data
- —Collaborative and multi-user features (presence, shared state, conflict handling)
- —Notification and event delivery with reconnection, replay and ordering guarantees
- —WebRTC voice, video and screen-sharing with signalling, TURN and recording
- —Streaming APIs for LLM and long-running task output
- —Pub/sub and message infrastructure (Redis, NATS, Kafka) sized for your fan-out
How a project runs
- 01
Transport and topology
Message shapes, direction, volume and latency budget decide between SSE, WebSockets, WebRTC and polling — and how many servers are involved.
- 02
Vertical slice
One real feature end-to-end, deployed behind your actual load balancer and CDN, tested on bad networks.
- 03
Scale and harden
Fan-out, backpressure, reconnection, auth, observability, load tests with realistic connection counts.
- 04
Operate
Dashboards for connection health, runbook for incidents, hand-over to your team.
Frequently asked questions
- WebSockets or Server-Sent Events?
- If the server pushes and the client mostly listens — dashboards, notifications, token streaming — SSE over HTTP/2 is simpler and friendlier to proxies and serverless. If both sides send frequently, or you need binary, use WebSockets.
- Can you add video calls to an existing product?
- Yes. WebRTC handles media peer-to-peer; the work is in signalling, TURN relays for restrictive networks, recording, and making the UI degrade gracefully when bandwidth drops.
- Does real-time work on serverless platforms?
- SSE and short-lived streaming do. Long-lived WebSocket connections need a stateful layer — a managed service or a small set of long-running servers — which we design as part of the architecture.
- How many concurrent connections can this handle?
- A single well-tuned Node or Go process handles tens of thousands of idle connections; the real limits are message volume and fan-out, which is why we load-test with your traffic shape before go-live.
Have a system in mind?
Send us a short description of the problem, the current tooling and the deadline. We reply within two business days with next steps or a frank “this is not for us”.
Start a project