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Backend Development Services: Backend & Full-Stack Development Company

Updated September 2026 · Written and maintained by the Progression Agency strategy team

Progression Agency provides backend and full-stack development services: APIs, databases, business logic, background jobs, authentication and cloud infrastructure behind web and mobile products, plus the front ends that sit on top.

On this page · 13 sections
  1. What are backend development services?
  2. Backend and full-stack services
  3. Key features and components
  4. Common integrations
  5. Security and reliability
  6. Our backend and full-stack development process
  7. How much do backend development services cost?
  8. Technology we typically use
  9. Mistakes to avoid
  10. Why choose Progression Agency for backend and full-stack development?
  11. Related services
  12. Choosing a backend stack
  13. Video: building software

The short answerBackend development is building the server-side systems that store data, enforce business rules, authenticate users and power web and mobile apps. Full-stack development covers backend and front end together. Backend projects commonly cost $30,000-$200,000 depending on scope.

Cost ranges are US planning figures, not quotes.

Backend and full-stack development searches
Product teams search for backend and full-stack capacity to ship faster.

What are backend development services?

Backend development services design and build the server-side of software: APIs, databases, business logic, authentication, integrations and infrastructure.

Full-stack teams own both the backend and the web front end or mobile app, which reduces handoffs.

API — APIs. REST and GraphQL..
DB — Databases. Design and tuning..
Logic — Business logic. Rules and workflows..
Jobs — Background jobs. Queues and schedules..
Auth — Authentication. Users and roles..
Infra — Cloud infrastructure. IaC and CI/CD..

Backend and full-stack services

Projects we are most often asked to build.

Backend for mobile apps

APIs, auth, push and data sync for iOS and Android apps.

Backend for web and SaaS

Multi-tenant data, billing and permissions.

Database design and optimization

Schemas, indexes and query tuning.

Performance and scaling

Caching, queues and load testing.

Cloud and DevOps

Infrastructure as code, CI/CD and monitoring.

Full-stack product teams

Front end and backend delivered together.

Full-stack teams own both the backend and the web front end or mobile app, which reduces handoffs.

Key features and components

What separates a useful build from a costly one.

Backend and full-stack development: key components
FeatureWhy it matters
Clean domain modelMaintainable logic
Authentication and rolesSecurity
Automated testsSafe changes
CI/CDFast releases
Caching and queuesPerformance
ObservabilityFast diagnosis
Backups and recoveryResilience
DocumentationEasy onboarding

Common integrations

Where the value usually comes from.

Common integrations
SystemWhat we connect
Front endsWeb and mobile apps
PaymentsBilling providers
Email and messagingTransactional communication
IdentitySSO providers
DataWarehouses and analytics
Third-party APIsPartners

Security and reliability

Backends hold the data and the keys.

  • Least-privilege access and secrets management.
  • Encryption at rest and in transit.
  • OWASP-aligned security (OWASP).
  • Backups, recovery testing and monitoring.
How we deliver backend and full-stack development
Observability from the first release makes scaling decisions evidence-based.

Our backend and full-stack development process

We model the domain and data, choose architecture and infrastructure, build APIs and logic with automated tests, deploy through CI/CD, add observability and tune performance with real load data.

How much do backend development services cost?

As a planning range, a backend for a mobile app commonly costs $30,000-$100,000, a SaaS backend $60,000-$200,000, and ongoing full-stack team capacity is priced monthly.

Backend and full-stack development cost ranges (planning figures)
ScopeTypical rangeTimeline
Mobile app backend$30,000-$100,0002-4 months
SaaS backend$60,000-$200,0003-6 months
Performance / scaling project$15,000-$60,0002-8 weeks

Technology we typically use

Mainstream, maintainable choices.

Technology we typically use
LayerChoice
LanguagesTypeScript (Node.js), Python
DataPostgreSQL, Redis
MessagingQueues and event streams
InfraDocker, Terraform
CI/CDGitHub Actions
CloudAWS, Azure, Google Cloud

Mistakes to avoid

Common causes of overruns and low adoption.

  • Premature microservices.
  • No automated tests.
  • Manual deployments.
  • Missing indexes and monitoring.
  • Secrets in code.
  • No backup restore test.
Tests — BE. Safe changes..
CI/CD — BE. Fast releases..
Observability — BE. Quick fixes..
Indexes — BE. Fast queries..
Secrets — BE. Managed..
Backups — BE. Tested restores..

Why choose Progression Agency for backend and full-stack development?

Engineering, design and go-to-market in one team.

  • Pragmatic architecture, not over-engineering.
  • Full-stack delivery with web and mobile teams.
  • DevOps and observability built in.
  • You own the code, data and accounts.
  • Headquartered in New York City, working nationwide.

See API development, custom software development and development outsourcing.

Choosing a backend stack

Mainstream stacks all work. The choice depends on your team, your integrations and your performance needs.

Backend stacks compared
StackStrengthsTypical use
Node.js (TypeScript)One language across web, app and serverAPIs for web and mobile apps
PythonData and AI ecosystemAI features, data processing
GoPerformance and simple deploymentHigh-throughput services
.NETEnterprise and Microsoft integrationEnterprise systems
Backend-as-a-service (Firebase, Supabase)Fastest startMVPs and simple apps

Serverless or containers?

Serverless suits spiky, event-driven workloads; containers suit steady traffic and long-running processes. Many backends use both.

Ready to scope it?

Tell us the users, workflow and systems involved. We will propose a first release and planning estimate.

Get a proposal

Video: building software

Explainers on the practices and frameworks we use.

Getting found in search

AI, AEO and what is changing

Paid media and lead generation

Websites and design

Choosing and working with an agency

Software and app development

Social, content and brand

By industry and by situation

Frequently asked questions

What are backend development services?
Building the server-side of software: APIs, databases, logic, auth, integrations and infrastructure.
How much does backend development cost?
As a planning range, $30,000-$100,000 for a mobile app backend.
How long does backend development take?
Commonly 2-6 months depending on scope.
What is full-stack development?
Building both the front end and backend of an application.
Which backend language do you use?
Mostly TypeScript with Node.js and Python.
Which database is best?
PostgreSQL suits most business applications.
Do you build backends for mobile apps?
Yes.
Can you fix a slow backend?
Yes, through profiling, indexing, caching and queues.
Monolith or microservices?
Start with a well-structured monolith; split when evidence demands it.
Do you set up CI/CD?
Yes.
Can you take over an existing codebase?
Yes, after a code review.
How do you secure a backend?
Least privilege, secrets management, encryption and OWASP practices.
Can you provide ongoing full-stack capacity?
Yes, on a monthly basis.
How much maintenance is required?
Dependency updates, security patches and monitoring.
What should I look for in a backend developer?
Testing discipline, security and pragmatic architecture.
Can you migrate to the cloud?
Yes.
Do you use serverless?
Where it fits the workload.
Can you outsource full-stack development to you?
Yes.
Who owns the code?
You do.
Where is Progression Agency located?
New York City, serving clients nationwide.

Sources and further reading

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