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Microservices that scale
without becoming fragile

We design microservices around the parts of your business, such as orders, billing or dispatch. Each service has a clear owner and a versioned contract, and services share events instead of calling each other for everything, so teams can release on their own schedule.

To kick off a scoped project
1–2 weeks
Daily overlap with your team
4+ hours
Monthly per squad, no hourly bills
Flat fee
Your code, designs and IP
100%

What's included

What we
build for you

6 capabilities, delivered by one squad. Use what you need now and add more as you grow.

  • 01

    Domain decomposition

    Service boundaries drawn around business areas, with a clear owning team for each one.

    • Context mapping
    • Ownership lines
  • 02

    Service contracts

    Versioned APIs and schemas, with backward-compatibility rules so one team's change doesn't break another team's service.

    • Schema governance
    • Consumer-driven testing
  • 03

    Event-driven workflows

    Events, sagas and the outbox pattern keep services loosely linked, and handlers process a repeated message only once.

    • Sagas
    • Duplicate-safe processing
  • 04

    Gateway and routing

    An API gateway that handles sign-in, rate limits and traffic rules in one place, without slowing requests down.

    • Zero-trust gateway
    • Traffic policies
  • 05

    Reliability and SRE

    Timeouts, retries, bulkheads and circuit breakers stop one failing service taking others down, measured against agreed SLOs.

    • SLOs and error budgets
    • Runbooks and on-call
  • 06

    Monitoring

    Distributed tracing follows a request across every service, alongside metrics, logs, dashboards and alerts.

    • Distributed tracing
    • Golden signals

Our approach

What usually goes wrong,
and what we do instead

  1. The usual way

    Services overlap, ownership is unclear and one change ripples across the system.

    How we do it

    We use domain-driven design to draw service boundaries around business areas and give each service one owning team.

  2. The usual way

    Synchronous calls everywhere, so one slow service drags down the rest.

    How we do it

    Services share events by default and call each other only when they must, through versioned APIs that can change safely.

  3. The usual way

    Every team monitors its services differently, or not at all.

    How we do it

    Every service ships with the same tracing, logs, metrics, SLOs and runbook from day one.

Architecture

How it's
put together

Each layer has a clear job, so the system is easier to secure, test and extend.

  1. Layer 01

    Domain services

    Each service covers one business area, owns its data and has a named team.

    • DDD
    • Bounded contexts
    • Anti-corruption layers
  2. Layer 02

    Gateway and routing

    One entry point that checks sign-in, applies rate limits and routes each request to the right service.

    • API gateway
    • Policies
    • Authorisation
  3. Layer 03

    Event bus and workflows

    Services publish and react to events. Sagas manage steps that span services, and the outbox pattern stops events going missing.

    • Events
    • Sagas
    • Outbox pattern
  4. Layer 04

    Monitoring and operations

    Traces, logs, metrics and SLOs that show where a slow or failed request went wrong.

    • Traces
    • SLOs
    • Alerts

How we deliver

From first review
to live in production

4 phases, each ending with an output you can review.

  1. Step 1: Domain and dependency audit

    We map your business areas, how tightly the code is tied together and who owns which data, then agree SLO targets.

    Output: Decomposition blueprint

  2. Step 2: Service carve-out

    We move the first services out using the strangler pattern: new services take over one route at a time while the old system keeps running.

    Output: First services in production

  3. Step 3: Contracts and events

    We add event-based workflows, schema rules, the outbox pattern and contract tests that catch breaking changes before release.

    Output: Loosely linked workflows

  4. Step 4: Operate and scale

    We add tracing, SLOs, alerts and runbooks to each service, and keep the standards up to date as more services are added.

    Output: Standards every team follows

Your team

Who works
on it

Specialists join your squad for this work, alongside a delivery lead who keeps you updated.

  • Microservices architect

    Draws service boundaries, assigns ownership and designs contracts that can change without breaking other services.

    • DDD
    • Boundaries
    • Contracts
  • Contracts and integration lead

    Owns schema rules and contract tests, so services keep working together as each one changes.

    • Schemas
    • Versioning
    • Contract testing
  • Platform and SRE engineer

    Sets the shared standards for deployments, retries and timeouts, tracing, alerts and incident response.

    • SLOs
    • Tracing
    • On-call
  • DevSecOps lead

    Builds secure defaults, secrets handling and supply-chain checks into every service's pipeline.

    • Policies
    • Secrets
    • Supply chain

Trust and control

Safe by design,
not by policy alone

  • SLOs and runbooks

    Every service has the same core metrics, alert rules and on-call standards.

  • Automated safeguards

    Pipelines check routing, sign-in, secrets and contract changes before anything is deployed.

  • Supply chain and change records

    Every deployment, dependency and change is recorded, so you can trace what is running and where it came from.

You keep full ownership of the code, configuration and documentation we create, with no vendor lock-in.

Tools and standards

We pick what fits your product and team, not the other way round.

Architecture patterns
  • Domain-driven design
  • Strangler pattern
  • Outbox pattern
  • Sagas
Contracts
  • Versioned APIs
  • Event schemas
  • Consumer-driven contract tests
Reliability
  • Distributed tracing
  • SLOs
  • Circuit breakers
  • Bulkheads

Results

Related
case studies

More case studies
  • LogisticsSaaS & Software

    Logistics platform: One large application split into focused services

    We helped a logistics company split a growing all-in-one application into separate services for orders, dispatch, tracking, notifications and billing. Each area can now improve and scale on its own.

    Connected workflow
    One
    Day-to-day visibility
    Live
  • SaaSSaaS & Software

    Subscription billing: Fragile billing code rebuilt as reliable services

    We redesigned a SaaS company's subscription and billing workflows as separate services for plans, payments, invoices, entitlements and notifications. Processes that affect revenue are now easier to manage and to recover when something fails.

    Connected workflow
    One
    Day-to-day visibility
    Live
  • HospitalitySaaS & Software

    Hotel system integrations: 85% faster API responses

    We wrapped a hotel group's ageing PMS in a modern API layer with caching and live sync, so new guest features no longer need risky changes to the core system. It runs at 99.99% availability, with 45ms API responses.

    System availability
    99.99%
    API response time
    45ms
  • FinTechSaaS & Software

    Algorithmic trading: Automated strategies, with funds kept at the broker

    We built an algorithmic trading platform that connects securely to the user's own brokerage account and runs automated strategies. Paper trading lets users test a strategy first, and a live dashboard shows every trade.

    Non-custodial design
    100%
    Trade execution
    < 45ms

FAQ

Straight
answers

Have a different question? Ask it on a 30-minute call.

Book a call

Microservices make sense when several teams work on one product and keep blocking each other's releases, or when parts of the system need to scale separately. If one small team runs the product, a well-structured monolith is often simpler. Our domain audit shows whether splitting will pay off before you commit to it.

Planning something like this?

Tell us what you need. We'll suggest the right team and a rough quote range, and an NDA is available before you share anything sensitive.