REST + GraphQL APIs
Hono, Fastify, NestJS, Apollo. OpenAPI contracts in CI, idempotency keys, per-route SLOs, distributed tracing.
Hire Node.js engineers · London
Hire senior Node.js engineers in London.
Production Node.js services: Hono, NestJS, Fastify, edge runtimes. APIs with contracts, idempotency, and the operational discipline the JavaScript runtime is rarely given credit for.
- In production
- 2018+
- Senior bench
- 45+ G6/G9 engineers
- Floor
- G6+ on client work
- Europe delivery model
- Senior bench + in-market workshops
Hiring Node.js engineers in London
Senior Node.js delivery, anchored in London.
London, United Kingdom engagements ship with the same seniorNode.js bench used across every Prosigns delivery. No staff-augmentation, no junior fallback, no SDR routing. The engineers in the proposal are the engineers in production.
- Europe delivery model
- Senior bench + in-market workshops
- Operating model
- US/EU overlap for architecture calls
- Engineering bench
- Senior-only teams
- Reply window
- <2 hr GMT / CET
Why senior, not contractor
Node.js in production is a different problem than Node.js on a laptop.
Node.js gets a reputation for fragility because most teams ship it without typed boundaries, without idempotent contracts, and without the per-route observability that catches a regression before users do. Prosigns ships Node services with the same operating discipline as Go or Java: TypeScript-strict at the boundary, OpenTelemetry tracing per request, structured logging, and rate-limit / retry / DLQ defaults baked in.
Senior floor
G6+ minimum
Bench depth
45+ G6/G9 engineers
In production
2018+
Engagement
Outcome-led SOW
Where Node.js ships
6 sub-areas, grounded in shipped engagements.
Specific applications of Node.js we’ve built and operate. Every example below maps to a real engagement, not a bullet on a stack-card.
01 02 Event-driven services
Kafka / Pulsar / EventBridge consumers with idempotency, dead-letter routing, replay tooling, and per-event-type dashboards.
03 BFF + API gateways
Backend-for-frontend services aggregating microservice calls. Schema federation, response shaping, edge caching where it fits.
04 Worker + queue systems
BullMQ, Inngest, Cloudflare Queues, Trigger.dev. Durable workflows, scheduled jobs, retry semantics that survive partner outages.
05 WebSocket + real-time
Socket.io, native WS, Pusher, Ably. Connection management, presence, fan-out at scale, replay buffers for late joiners.
06 Migrations off legacy Node
Express → Hono / Fastify, callback-style → async/await, JS → TypeScript-strict, Node 14/16 → modern LTS with zero-downtime cutover.
Stack depth
The Node.js ecosystem, owned.
Frameworks, libraries, and runtime tools the bench has shipped in production. Not a CV-skim, a working depth.
API frameworks
- Hono
- Fastify
- NestJS
- tRPC
- ts-rest
- Apollo
Runtimes
- Node.js LTS
- Bun
- Deno
- Cloudflare Workers
- AWS Lambda
Queues + workflows
- BullMQ
- Inngest
- Trigger.dev
- Temporal
- Cloudflare Queues
Data layer
- Drizzle
- Prisma
- Kysely
- Postgres.js
- Mongoose
- Redis
Observability
- OpenTelemetry
- Datadog
- Sentry
- Pino
- Honeycomb
Engagement models
Three ways to engage Node.js engineers.
We don’t bill hourly contractors. Engagements run against outcomes, choose the shape that matches the work.
See engagement models- 01
Fixed-scope
Defined deliverable, fixed price
When the deliverable is clear and the scope is bounded: an MVP, a migration, a discrete platform build. Senior engineering against a written outcome, not against a body count.
- 02
Embedded squad
Senior product team, ongoing
When the work is product-shaped and the cadence is continuous. A senior pod (engineering + design + PM as needed) embedded into your team, with the practice lead co-piloting from HELM.
- 03
Managed services
Steady-state operations
When the system is running and needs ongoing engineering ownership: operations, SLO defense, release management, security and compliance evidence. Monthly retainer against a published SLA.
Selected work
Node.js engineering that shipped.
Logistics
Event-driven integration platform on Node + Kafka for a 1,400-vehicle fleet.
94%fewer failed integrationsReplaced 23 cron-job point-to-point integrations with a Kafka-backed event mesh. NestJS consumers with idempotency, replay, and per-event SLO dashboards.
Duration · 7 months
Brief us
Reply < 4 business hoursHave a Node.js workload? Send a brief.
Five fields. Goes straight to the practice lead, not an SDR. We’ll reply with a senior engineer’s read on fit, scope, and the engagement model that suits the work.
FAQ
Questions buyers ask.
Everything below also appears in the proposal and the SOW: no surprises after signing.
Express, Fastify, NestJS, or Hono?
Hono for edge / Workers and lean serverless. Fastify for high-throughput Node services with plugin-style extensibility. NestJS when the team prefers DI + module structure for larger apps. Express only for legacy maintenance: it's fine, but newer choices are better defaults.
What about Bun and Deno?
Bun for performance-critical workloads and developer experience on the build path; production-ready for many use cases now. Deno for edge / serverless workloads and where its security model is the value. We'll tell you which fits: Node LTS is still the right default for most enterprise services.
Is this staff-aug, or is it engineering-led delivery?
Engineering-led delivery. We don't bill hourly contractors against your JIRA board. Every engagement runs against a defined outcome with a senior engineer accountable from kickoff to operating cutover. If you genuinely need staff-aug, discrete bodies, your management, hourly rates, we'll be honest and route you to a partner that fits.
What seniority floor are we talking about?
G6 minimum (six-plus years in their craft) on every billable hour. Department leads are G9 or G10. We don't flex juniors onto the bench mid-sprint, we don't subcontract to delivery centers, and we don't dilute senior rates with mixed staffing. The bench in the proposal is the bench in production.
How does pricing work?
Three engagement models published at /engagement-models/. Fixed-scope for defined deliverables, embedded squads for ongoing product work, managed services for steady-state operations. Rates depend on seniority, engagement length, and region. Discovery + scoping conversation is free; SOWs are written against deliverables, not bodies.
Where are your engineers based?
Senior-only across Dallas, Doha, Lahore, and Islamabad. We staff against the engagement's needs (timezone, language, regulatory frame), not against arbitrary regional preferences. Most engagements run with a US/EU-aligned core and a follow-the-sun extended bench when the workload warrants it.
Will the engineers I see in the proposal be the engineers shipping the work?
Yes. We name the engineers in the SOW, attach their profiles, and they're on the kickoff. We don't bait-and-switch with senior reviewers and junior execution. If a named engineer needs to roll off the engagement (rare), we surface a replacement from the same seniority tier with explicit handoff.
Talk to a Node.js lead
Senior Node.js engineering, accountable from kickoff.
Bring the workload: we’ll bring a senior engineer plus the practice lead most relevant to the work. 30 minutes, no obligation, no junior reps.