Hire Back-End API Developers
Hire Backend Developers Who Build APIs And Data You Trust
Back-end mistakes are the expensive kind: a schema you cannot change, an API three clients already depend on, a migration that has to run at 3am. Stallyons is a Delaware-registered US company whose senior engineers work your hours and sign IP over before anyone gets access.
Triple Protection Guarantee
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Triple Protection Guarantee:
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Engineers On Staff
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Avg. Engineer Exp.
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Years In Business
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Why Back-End Wins
API Contracts
Documented
Senior Engineers
Vetted Only
Hours That Overlap
Live Hours
IP Protection
Signed First
Delaware LLC
US Entity
Data Security
Access Rules
Schema Design
Migrations
Communication Rhythm
Daily Sync
Scale Planning
Documented
IP Assignment
Signed
Delivery Overlap
Fixed
Hours
Code & IP Owner
You
Trusted By Startups
What Hiring Back-End Developers Really Means
A back-end developer owns everything the user never sees: the data model, the API contract, authentication, background work, integrations and the behaviour of all of it when traffic arrives. The code is the visible part of that job. The durable part is the decisions, because a schema and a public API are the two things in a product that are expensive to change once other systems already depend on them.
Stallyons is registered in Delaware as a US company and our engineers are distributed globally, with at least four hours of daily overlap with your working day. You sign a US contract, run diligence on a US entity and pay one US invoice. We have been building software for twelve-plus years, have delivered across six continents and keep around thirty-five engineers on staff, so a back-end hire comes with database, infrastructure and security people behind it when a design decision turns out to be bigger than one person.
What Back-End Work Covers
Data models that survive: schemas designed for the queries you will actually run, with indexes, constraints and migrations planned before the first table is created rather than patched afterwards.
Delivery on your clock: we agree an overlap window before anything starts, so stand-ups, design reviews and production escalations happen live with your working day, not overnight.
Security handled at the boundary: authentication, per-role permissions, secrets management and audit trails built in, with credentials scoped per person and rotated when people move off.
Migrations that are reversible: staged rollouts, backfills that can be paused, and a written rollback path, so a schema change is a planned event rather than a Friday-night gamble.
APIs your clients can rely on: documented contracts, versioning, deprecation notice and contract tests, so a change on our side never breaks somebody else's release without warning.
One accountable vendor: one contract, one invoice, one entity to run legal and finance diligence on, instead of three contractors who each own a service and none of the seams.
Why Companies Hire Back-End Developers From Stallyons
- Ask a candidate to design a schema for one of your real features, out loud. How they handle the awkward relationship tells you more than any framework question.
- Get the IP wording in writing: assignment of everything produced, no licence-back, no shared ownership, and the NDA executed before any credential moves.
- Ask how they version an API and retire a field. A developer with no deprecation habit will break your integrators and call it a release note.
- Ask for a migration they ran on live data: how it was staged, how it was reversed, and what they would do differently. Nobody senior lacks that story.
- Check who holds production access and how it is revoked. Credentials scoped per person and rotated on rotation off is the minimum, not a nice-to-have.
- Insist on a written handover: schema decisions, open threads and known issues documented as work happens, so whoever picks it up next reads instead of guesses.
How To Hire Back-End Developers Safely
Every engagement starts with a free 45-minute strategy session. No slide deck, no sales script. You bring the system and whatever hurts about it; you leave with a recommended team shape, a scope and a sequence.
We are selective about new engagements and cap how many we run at once, because the vetting is the product. If we cannot staff your stack with engineers we would vouch for, we will tell you so.
Why Clients Choose Us
Full
Written IP Transfer
USA
Contract Entity
Yours
Tools & Accounts
Named
Senior Level
Ready to put a back-end developer on your system?
What Back-End Devs Build
What You Can Build With Back-End Developers
Back-end hires pay off when the work is defined, measurable and continuous. These are the builds we staff most often, each with an agreed contract, a migration plan and the same review standard applied on every merge, every time.
APIs & Microservices
REST, GraphQL and gRPC endpoints
Versioned
Database Design
Schemas, indexes, migrations
Indexed Right
Integration Work
Payments, CRM, ERP, third-party
Connected
Jobs & Event Queues
Schedulers, workers, retries
Retries And Alerts
Auth & Roles
OAuth2, SSO, permissions, audit
Locked Down
Payments & Billing
Stripe, subscriptions, invoices
Balanced
Data & ETL Pipelines
Ingest, transform, warehouse
Loaded
API Testing & Load
Contract tests, load, regression suites
Verified
Legacy Migrations
Monoliths, schemas, replatforms
No Downtime
Monitoring & Support
Alerts, on-call, incident fixes
Kept Running
Not sure what your back end needs first? Let's map it.
Common Challenges
Why Back-End Developer Hires Go Wrong
Six failure patterns behind almost every back-end rescue we are called into. Not one of them is about the language somebody picked.
Schema Regret
01
The data model gets drawn in week one to unblock a demo and never revisited. Two years later every new feature needs a join nobody can explain and a migration nobody wants to run.
Breaking API Changes
02
No versioning, no deprecation notice, no contract tests. A field gets renamed on a Tuesday and the client teams find out from their own error dashboards.
Scale Arrives Early
03
It worked at a thousand rows. At a million the same query crawls, and the fix is an index, a rewrite, or an architecture nobody planned for.
Migrations Go Bad
04
A migration written to run once, unattended, with no rollback path. It half-completes on production data at 3am and now the state is a shape nobody has tested.
Security Bolted On Late
05
Permissions get bolted on after the endpoints exist, so every route needs its own check and one of them will be missed. Audit trails arrive after the first incident.
No One Owns The Data
06
Three services write to the same table and each team believes another owns correctness. Reconciliation becomes a monthly spreadsheet instead of a constraint.
Seen a few of these before? Let's do it properly.
Our Back-End Services
6 Ways To Hire Back-End Developers
Six ways to add back-end capacity without a second hiring process. Run one, or several in parallel, under a single contract.
Back-End Service Delivery
01
End-to-end delivery of a defined service: data model, endpoints, tests and release, with a named lead who reports into you and an API contract you sign off before code starts.
Embedded Back-End
02
A back-end engineer inside your team's rota: your board, your services, your review rules and your on-call expectations, without you running a second hiring process.
Rebuilds & Migrations
03
Monoliths split, schemas restructured or platforms moved in stages, with the old path serving traffic until the new one has earned the switch.
API Design & Contracts
04
Documented, versioned API contracts with contract tests and a deprecation policy, so your own clients and integrators stop being surprised by your releases.
Cloud, DevOps & Support
05
Infrastructure, pipelines, monitoring and on-call cover, so the engineer who wrote the service is not the only person who can deploy or diagnose it.
Data Pipelines & Automation
06
Ingestion, transformation, warehousing and internal automation, built against your own data-handling rules and shipped behind your own review process.
Not sure which back-end model fits you? Let's scope it together.
Why Choose Us
What Makes Hiring Our Back-End Developers Different
The details that decide whether a back end survives its second year of data, not its first demo.
A US Legal Entity
01
Stallyons is a Delaware-registered US company, so legal, finance and procurement run diligence on a US entity, not a name on an invoice.
Contracts Before Code
02
The API contract and the data model are written down and agreed before implementation, because those are the two decisions you cannot undo cheaply.
Overlap You Set
03
You pick the hours we share with your working day, and design reviews, releases and production escalations sit inside that window.
IP Locked Down First
04
NDA and IP assignment are signed before any repository, credential or design file changes hands. Everything produced on the work is yours.
Tested At Load
05
Contract tests, integration tests and a load pass before release, reviewed on your board where you can read the numbers.
One Contract
06
One contract covers the engagement, so procurement, legal and finance each deal with a single named counterparty.
Ready to see what a back-end hire looks like here?
Our Process
From First Call To Back-End Developers In Six Steps
A hiring process that surfaces the awkward questions before anyone touches your database.
Discovery
Understand the system, stack, hours and budget
Scoping
Agree the role, scope and cost structure
Select
Meet and approve the engineers on your account
Contracting
NDA, IP assignment, access and onboarding
Deliver
Work on your board, reviewed on merge
Review & Scale
Regular reviews, adjust the scope as needed
Want to see how this maps to your roadmap?
Technology Stack
The Stack Our Back-End Developers Work In
Modern, battle-tested server-side tools: runtimes, databases, messaging, security and cloud infrastructure.
Backend Stacks
Node.js / NestJS
Django / Flask
Java / Spring
Go / Fiber
.NET / C#
Databases & Data Stores
PostgreSQL
MySQL / MariaDB
Redis Cache
MongoDB
Elasticsearch / S3
APIs & Messaging
REST / OpenAPI
GraphQL APIs
Kafka / RabbitMQ Queues
gRPC / tRPC
Celery / Background Jobs
Auth & Security
OAuth2 / OIDC
JWT / SAML
RBAC / ACLs
Encryption At Rest
Audit Logs / SIEM
Cloud & DevOps
AWS / GCP / Azure
Docker / K8s
Terraform / IaC
GitHub Actions / CI
Datadog / Grafana
Industries We Serve
Back-End Developers For Industries With Real Constraints
Engineers who already know your sector data rules and reporting obligations spend month one shipping, not asking.
Fintech & Payments
Ledgers, KYC, payment gateways
Healthcare & HealthTech
Records, HL7/FHIR, audit trails
Retail & E-Commerce
Catalogue, orders, inventory sync
EdTech & Learning
Enrolment, grading, content APIs
SaaS & Digital Products
Multi-tenancy, billing, metering
Logistics & Supply Chain
Routing engines, fleet, ERP sync
Manufacturing & IoT
Telemetry ingest, device APIs
Agencies & Consultancies
White-label back-end capacity
We know your industry. Let's plan the back-end work.
How We Compare
Hire Back-End Developers vs The Alternatives
An honest look at your four hiring options.
| Capability | In-House Hire | Freelance Marketplace | Generalist Agency | Stallyons Technologies |
|---|---|---|---|---|
| Cost Base | ✕ Salary Plus Overheads | Lowest Bid Wins | Blended Rates | Senior, No Overheads |
| Data Modelling Depth | Depends On Hire | ✕ Not Assessed | ✕ CV Screen | Schema Work Tested |
| API Contracts | Informal | ✕ Undocumented | Ad Hoc | Versioned And Documented |
| Migrations | Risk Owned Alone | ✕ Not Offered | Change Request | Staged, Reversible |
| Contracting Entity | Employment Contract | ✕ Platform Terms | Local Entity | US-Registered LLC |
| IP Assignment | In The Contract | ✕ Platform Default | ✕ Negotiated | Signed Before Access |
| Real Overlap Hours | Same Time Zone | ✕ Whenever | Business Hours | Agreed Overlap |
| Handover & Lock-In | Leaves With Them | ✕ Nothing Written | ✕ On Request | Documented Handover |
See the difference for yourself
Complete Engagement
Everything Included When You Hire Back-End Developers
From Scoping to Contracting to Delivery, One Vendor
Here's everything included when you hire back-end developers here:
All-Inclusive Back-End Delivery: No Hidden Fees, No Surprises.
Every back-end engagement includes all eight components above. One contract, one senior team, one predictable cost, no vendor sprawl.
🔒 No obligation. We'll deliver a detailed proposal within 48 hours.
Plus, Get These Free Bonuses
Free Back-End Review
A written read on your data model, API contracts and the queries that will hurt first at scale, with the fixes ranked by cost and impact. Yours to keep.
Included Free
Delivery Plan & Estimate
A phased delivery plan with scope, milestones, a stack recommendation and a transparent, itemized estimate for the engagement.
Included Free
Free Hiring Checklist
The questions we would ask any back-end candidate about schemas, API contracts, security and migrations, so you can put us through the same test.
Included Free
Risk-Free Partnership
Our Back-End Developer Promise
We stand behind every engagement with commitments that protect your investment.
01
Scope Agreed First
Scope, API surface, working hours and cost structure are written down and agreed before contracting, so nothing is discovered later.
02
Built to Last
Senior developers, code review, automated tests, security and accessibility audits, and clean, documented code you fully own.
03
IP And Access Protected
NDA and IP assignment are signed before access, permissions are scoped per person, and your accounts stay under your control.
Start your back-end hire with confidence, backed by our Triple Protection Guarantee.
Track Record
Engagements That Ship, Scale, and Compound
500+
Projects Delivered
29+
Service Categories
81%
Repeat Client Rate
4.9 ★
Clutch Rating
"We came to Stallyons after burning two years and four vendors on a multi-platform launch that kept slipping. They scoped it end-to-end — web app, iOS, Android, an AI summarization layer, and a Shopify integration — and shipped it in 22 weeks. One team, one budget, one quality bar. We've handed them three more engagements since."
Mark Sawyer
CEO/Founder
PlatinumLED
"Stallyons rebuilt our customer-facing portal, integrated three legacy systems, shipped an AI document analysis pipeline, and brought our compliance posture to SOC 2 — all under one engagement. The senior engineers on the team have shipped at companies five times our size. It's the best vendor decision we've made in a decade."
Mark Sawyer
CEO/Founder
PlatinumLED
FAQ
Questions About Hiring Back-End Developers
A back-end developer builds the parts of a product users never see: the data model, the API, authentication and permissions, background jobs, integrations with other systems, and the behaviour of all of it under load. Day to day that means designing schemas, writing and documenting endpoints, running migrations safely, and making sure a query that is fine today is still fine at ten times the data.
Language fluency is the easiest thing to test and the least predictive. Screen for data modelling first: give a real feature and watch how they handle the awkward relationship. Then ask how they version an API and retire a field, how they would run a migration on live data and reverse it, where they put authorisation checks, and how they would find a slow query. Someone who reaches for an index, an explain plan and a rollback plan without prompting has done this in production.
Rates vary by seniority, region and how much infrastructure and on-call sits inside the role, so a single number quoted before scoping is a guess. What decides your cost is how clear the data model is, how many systems you integrate with, and how much rework the engagement generates. We price after scoping, itemized, so you can see what each part costs.
Usually the one your team can maintain. Node, Python, Java, Go and .NET all scale further than most products ever need, so the deciding factors are hiring, libraries in your domain and what your existing systems speak. On the database, a relational engine with proper constraints is the safe default, and specialised stores earn their place once you have a specific access pattern that hurts.
You do, from the first commit. NDA and IP assignment are signed before anyone gets repository access, with no licence-back and no shared ownership. Repositories, credentials, infrastructure accounts and documentation live in your own accounts throughout, so nothing has to be handed back at the end.
Authorisation is designed with the endpoints rather than added afterwards, secrets live in a managed store, access is scoped per person and revoked on rotation off, and sensitive actions are logged for audit. Our delivery is HIPAA, SOC 2, GDPR and PCI-DSS-aligned, and any sector-specific handling requirement goes into the contract rather than a slide.
You set an overlap window before work starts, and stand-ups, design reviews and production escalations happen inside it, whether you sit in North America, the UK and Europe, the Middle East, Singapore, or Australia and New Zealand. We keep at least four hours of daily overlap. Work is tracked on your board with a named lead.
In stages, and reversibly. Additive changes ship first, code reads from both shapes during the transition, backfills run in batches that can be paused, and the old column or table is only dropped once nothing reads it. Every migration has a written rollback path and runs inside your agreed overlap window, so somebody senior is awake if it misbehaves.
Still have questions? Let's talk.
Schedule an appointment with us today!
Ready to Hire Backend Developers The Right Way?
Get a free consultation. We'll review your data model and API surface, then send you a detailed written proposal.
