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Backend Engineering

The quiet part of your product that has to never break.

APIs, data models, queues and integrations built to stay fast under load, secure by default and easy for the next engineer to understand.

  • APIs
  • Microservices
  • Data pipelines
  • Integrations
  • Node.js
  • Go
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APIs, Microservices, Data pipelines, Integrations, Node.js, Go

What we deliver

What We Build Behind the Scenes. 

The engines that keep your apps, agents and reports running.

  • APIs

    REST and GraphQL APIs with clear contracts, versioning and documentation.

  • Data modelling

    Schemas designed for today's features and next year's reports.

  • Integrations

    Payments, banking, CRMs, ERPs and logistics partners connected reliably.

  • Queues and real-time

    Background jobs, events and live updates that don't drop messages.

  • Data pipelines

    Clean data flowing into your warehouse and dashboards on schedule.

  • Auth and security

    Login, roles, audit trails and encryption built in from the start.

Our approach

How We Build Backends That Last. 

Clear contracts, boring technology and observability from day one.

  1. 01

    Contract first

    We agree the API contract before building, so frontend and mobile can start in parallel.

  2. 02

    Model the domain

    Data models that mirror how your business actually works, not how a tutorial does.

  3. 03

    Design for failure

    Retries, timeouts and idempotency so a partner outage doesn't become yours.

  4. 04

    Secure by default

    Least-privilege access, secrets management and input validation everywhere.

  5. 05

    Observe everything

    Logs, metrics and traces so we can answer 'why is it slow?' in minutes.

  6. 06

    Load test before launch

    We find the breaking point in testing, not on your busiest day.

Quality targets

Quality We Commit To. 

Service levels agreed per system and shown on a live dashboard.

  • Target99.9%

    API uptime

    monthly target for production

  • Target<200ms

    p95 response time

    for core read endpoints

  • Target100%

    Endpoints documented

    OpenAPI or GraphQL schema

  • Target0

    Secrets in code

    scanned on every push

Targets we agree at kick-off and report on every week. Your numbers go in the contract, not on a poster.

Tech stack

Tools We Know Well. 

We choose boring, proven tools by default and reach for new ones when they earn it.

Languages

  • Node.js
  • TypeScript
  • Python
  • Go
  • Java

Frameworks

  • NestJS
  • FastAPI
  • Express
  • Django
  • Gin

Databases

  • PostgreSQL
  • MongoDB
  • Redis
  • DynamoDB

Messaging

  • Kafka
  • RabbitMQ
  • SQS
  • BullMQ

APIs

  • REST
  • GraphQL
  • gRPC
  • OpenAPI
  • Webhooks

Observability

  • OpenTelemetry
  • Datadog
  • Grafana
  • Sentry

Related work

Work We're Proud Of. 

Projects where this discipline did the heavy lifting.

All case studies

Industries

Built for Regulated, Busy Industries. 

The same engineering discipline, tuned to the rules and rhythms of your sector.

Ways to work with us

Three Ways to Work With Us. 

Pick the model that fits your team today. You can switch as the project grows.

Questions We Hear Often. 

  • Monolith or microservices?

    Usually a well-structured monolith first. We split out services when there's a real reason, like scale or team size.

  • Can you integrate with our legacy systems?

    Yes. We've connected to old SOAP services, FTP drops and databases with no API. We wrap them safely so new code stays clean.

  • How do you handle security?

    Least-privilege access, encrypted data, secrets managers, dependency scanning and audit logs, aligned with common standards.

  • Will it scale?

    We design for your expected load with headroom, and load test before launch so we know where the limits are.

  • Do you document the APIs?

    Always. Every endpoint is described in OpenAPI or a GraphQL schema, with examples your partners can use.

Get in touch

Talk to our Backend Engineering team.

Share a few lines about your idea, workflow or project. A senior lead replies within one business day.

  • Free 30-minute strategy call
  • NDA on request
  • Proposal within 48 hours
hello@vaug.in Our offices

We reply within one business day. No spam, ever.

Other disciplines

Explore Other Disciplines. 

Build the backend once.
Build it right.

Free 30-minute strategy call · NDA on request · Proposal within 48 hours

Book a call