Gateeto EngineLarge migrations
Move a legacy monolith or an aging stack to a modern, event-driven architecture one area at a time. Old and new systems run side by side and stay in sync until each part is cut over, so the business never stops.
Software factory
From idea or legacy system to production in weeks, not quarters.
A software factory for companies migrating large systems and startups that need to go from idea to production fast. We design, build and run production-grade backends, APIs and admin interfaces, delivered in weeks.
- Weeks
- to a production build, not quarters
- End to end
- automated tests on every delivered feature
- No lock-in
- standard, open technologies you can hire for
For teams that need production quality without the usual timeline
Startups
Get a working backend, an admin interface and a typed API in the first weeks, built to production standards from day one. Spend your runway on the features that make you different, not on the plumbing.
Managed platform
Don't want to run it yourself? We host, operate and evolve the system for you as a managed service, with the same standards for security, reliability and performance.
Features
Everything a production system needs, built in and tested
Production in weeks
Services, database, APIs, security and an admin interface are in place in the first days, so engineering time goes to your business rules from the start.
Admin interface from day one
Lists with filters and pagination, editors with validation, selects and autocompletes over related data, file uploads and nested forms, typed end to end against the API.
Event-driven by design
Services communicate through reliable events: nothing is lost when a service is down, and a message delivered twice is processed once.
Safe retries on every write
A client that retries a request after a timeout gets the original response back instead of creating a duplicate order, payment or record.
Authentication and roles built in
Token-based authentication, a single gateway in front of every service and role-based permissions per endpoint, from the first release.
File storage that scales
Documents, images and videos upload directly to object storage, so large files never pass through or slow down your services.
Tested end to end
Every delivery ships with automated tests for its business rules, its API and its screens, run in a real browser against the real system.
Consistent, readable code
Every service follows the same structure and conventions, so new features, new developers and new teams ramp up fast and quality doesn't erode over time.
Complex systems
How long to a production build?
Estimates for real-world systems built the way we build for clients. We are building each of them as a benchmark and will replace these estimates with measured numbers.
1 of 6
Commerce catalog & orders
Product catalog with variants and media, pricing, inventory and an order pipeline that emits events to fulfillment and billing.
Time to production build3–4 weeks
- Services
- 4
- Entities
- 28
- Integrations
- Payments · S3 media · Kafka
- Nested variants with per-variant images
- Filters and pagination over large catalogs
- Order events that are never lost
Logistics & shipment tracking
Shipments, routes, carriers and tracking events, with webhook ingestion from carriers and real-time status updates for customers.
Time to production build4–6 weeks
- Services
- 5
- Entities
- 34
- Integrations
- Carrier webhooks · Kafka · Notifications
- Webhook ingestion decoupled from processing
- Duplicate-safe event consumers
- Notification fan-out per status change
Recruitment platform (ATS)
Job postings, candidates, pipelines, interviews and document handling for CVs and contracts, with role-based access for recruiters and managers.
Time to production build2–3 weeks
- Services
- 3
- Entities
- 22
- Integrations
- S3 documents · Email · Auth roles
- Document storage with direct uploads
- Configurable hiring pipelines
- Per-role screens and permissions
Learning platform (LMS)
Courses, modules, lessons, enrollments and reviews, with video assets and progress tracking events.
Time to production build2–3 weeks
- Services
- 3
- Entities
- 18
- Integrations
- S3 video · Kafka · Payments
- Two-level course structure
- Progress events for analytics
- Tabbed editors for complex content
Legacy ERP module migration
Strangler-pattern migration of an ERP's purchasing and inventory modules off a monolith, with change data capture keeping both systems in sync during the transition.
Time to production build8–12 weeks
- Services
- 6
- Entities
- 60
- Integrations
- Legacy DB (CDC) · Kafka · SSO
- Data model rebuilt from the legacy schema
- Old and new systems in sync until cut-over
- Versioned schema evolution
Multi-channel notification hub
A shared service that templates and delivers email and push notifications in response to domain events from every other service, respecting each recipient's language, preferences and quiet hours.
Time to production build1–2 weeks
- Services
- 2
- Entities
- 9
- Integrations
- Email providers · Push (FCM) · Kafka
- Exactly-once delivery per event, recipient and channel
- Provider failover with retries and backoff
- Templates managed from the admin UI
Advanced details
Why the systems are fast, compatible, scalable and ready for production
The engineering inside every system we deliver, for the people who will run it.
Lean services that do as little work as possible per request.
Explicit code, no runtime magic
Data mapping, validation and queries are plain compiled code, not reflection-heavy layers that inspect objects and assemble queries on every request. Less CPU per request, predictable latency, and stack traces that point at real code.
Native images
Services can ship as GraalVM native executables. A native service starts in a fraction of a second and uses a fraction of the memory of a regular JVM, which matters for scale-to-zero, autoscaling and dense deployments.
Queries that fit the screen
Each list chooses its pagination: pages with a total count, slices that skip the count query on very large tables, or plain lists for small reference data. Filters run in the database, so only the matching rows ever leave it.
Lean payloads
Lists return compact summaries with only the fields they show; full records are loaded for editing only. Selects and autocompletes call dedicated lightweight endpoints instead of fetching whole collections.
Process
From first workshop to handover
- 01
Discovery
We map your entities, rules, integrations and events together, from workshops or from your existing systems and database.
- 02
Foundation in days
Services, databases, security, APIs and the admin interface are up and running in a real environment within the first days.
- 03
Build what is unique
The rest of the project goes to business rules, integrations and the customer-facing experience, on top of a tested base.
- 04
Ship, hand over or run
Deployed with migrations, monitoring and documentation. Take the code in house, or let us run and evolve it as a managed service.
Have a system to build or migrate?
Tell us about the domain and the deadline. We will come back with a plan and an estimate.
hello@gateeto.com