APIs, Microservices and DataSOC 2 Type II
Backend Development Services for APIs That Scale
SDLC Corp provides backend development services for products that need fast, secure and reliable server-side systems. We design APIs, microservices, databases and integrations. Then we test, release and run them, so your apps stay quick as traffic and features grow.
- SOC 2 Type II
- ISO 27001 Certified
- ISO 9001 Certified
- Projects delivered
- 3,400+
- Global engineers
- 1,200+
- Countries served
- 30+
- Years of delivery
- 10+
Trusted by teams at
Why the backend matters
Backend Development Services Built for Real Traffic
Users never see your backend. Still, they feel it every time a page loads slowly, a payment fails or two systems disagree. Most of these problems start with rushed API design, weak data models or missing monitoring.
Our backend development services fix the cause, not just the symptom. First, we agree on the API contracts and the data model. Then we build the services, connect the integrations and add tracing from day one. As a result, your team can ship new features without breaking what already works.
- API contracts agreed before anyone writes code
- Security and access rules designed in, not bolted on
- Logs, metrics and traces live before launch
New to the topic? Start with our guide to what backend development is.
Capabilities
Our Backend Development Services
Pick one service or the full backend. Either way, each part plugs into the next, so you do not have to manage gaps between vendors.
API Design and Development
REST, GraphQL and gRPC APIs, designed contract-first with OpenAPI or schema files. We also version and document them, so client teams can build in parallel.
API and software integrationMicroservices and Event-Driven Systems
Services split along business lines, linked by Kafka or RabbitMQ events. Each consumer handles retries and duplicates, so one slow service does not stall the rest.
Hire Kafka developersDatabase Design and Caching
Schemas, indexes and safe migrations for PostgreSQL, MySQL, SQL Server and MongoDB. Then Redis caching takes load off hot read paths.
Hire PostgreSQL developersAuthentication and Access Control
OAuth 2.0, OpenID Connect and JWT, plus role-based access and single sign-on. That way, every API call carries a clear identity and scope.
Our Trust CenterCloud and Serverless Backends
Containers on Kubernetes, AWS Lambda, Azure Functions and managed databases. We define it all as code, so each environment matches the last.
Cloud application developmentLegacy Backend Modernization
We move old monoliths step by step. New services sit behind a gateway and take over one route at a time, while the old system keeps running.
Legacy software modernizationThird-Party Integrations
Payments, CRM, ERP, ITSM and partner APIs. For example, webhooks get signature checks, retries and alerts, so failed syncs never go unnoticed.
Integration strategy guidePerformance, Observability and Support
Load tests, profiling and query tuning, plus OpenTelemetry traces, dashboards and alerts. After launch, we keep watch and fix issues fast.
DevOps services
Architecture
API Styles and Architecture, Matched to Your Workload
No single pattern fits every product. Instead, we choose per use case, and many systems mix two or three. Select a style to see when it fits.
REST
Resource-based HTTP APIs with JSON, described in OpenAPI.
- Best for
- Public and partner APIs, web and mobile apps, and most CRUD-heavy products.
- Trade-off
- It is simple and widely supported. However, clients may need several calls to build one screen.
GraphQL
One endpoint where clients ask for the exact fields they need.
- Best for
- Apps with many screens, mobile clients on slow networks and fast-moving front ends.
- Trade-off
- Fewer round trips. Still, it needs query limits and careful caching.
gRPC
Fast, typed calls between services, defined in Protocol Buffers.
- Best for
- Internal service-to-service traffic where speed and strict contracts matter.
- Trade-off
- Very efficient. On the other hand, browsers need a proxy to use it.
Event-driven
Services publish events to Kafka or RabbitMQ, and others react to them.
- Best for
- Order flows, notifications, audit trails and anything that must not block the user.
- Trade-off
- Loose coupling and easy scaling, although you must plan for retries and duplicate events.
Microservices
Small services, each owning one business area and its own data.
- Best for
- Large products with several teams that need to release on their own schedule.
- Trade-off
- Teams move faster. Even so, you take on more moving parts to deploy and watch.
Modular monolith
One deployable app with strict internal modules and clear boundaries.
- Best for
- New products and smaller teams that want speed now and a path to services later.
- Trade-off
- Simple to run. Then, when a module outgrows it, you can split it out cleanly.
Serverless
Functions that run on demand, such as AWS Lambda or Azure Functions.
- Best for
- Spiky workloads, scheduled jobs, file processing and event handlers.
- Trade-off
- You pay per use and skip server care. However, cold starts and limits need planning.
Technologies we work with
Languages and frameworks
- Node.js
- NestJS
- Express
- Python
- Django
- FastAPI
- Java
- Spring Boot
- C#
- ASP.NET Core
- Go
- PHP
- Laravel
- Ruby on Rails
- Rust
Databases and caching
- PostgreSQL
- MySQL
- SQL Server
- MongoDB
- Redis
- Elasticsearch
- DynamoDB
Messaging and real time
- Apache Kafka
- RabbitMQ
- Amazon SQS
- Azure Service Bus
- WebSockets
- Socket.IO
Identity and security
- OAuth 2.0
- OpenID Connect
- JWT
- Keycloak
- Amazon Cognito
- Microsoft Entra ID
Cloud and delivery
- AWS
- Microsoft Azure
- Google Cloud
- Docker
- Kubernetes
- Terraform
- GitHub Actions
Observability
- OpenTelemetry
- Prometheus
- Grafana
- ELK Stack
- Amazon CloudWatch
- Azure Monitor
Need people, not a project? You can hire full stack developers, or add MongoDB, Rust and Laravel specialists to your team.
Why SDLC Corp
Why Choose SDLC Corp for Backend Development Services
Plenty of teams can write an API. However, fewer design it to stay fast, safe and easy to change for years. Here is what we do differently.
Contract-first APIs
We agree on the API contract before we write code. So front-end, mobile and partner teams can start at the same time.
Security from sprint one
Our delivery runs under SOC 2 Type II, ISO 27001 and ISO 9001 certified processes. We also test APIs against the OWASP API Security Top 10.
Observable by default
Every service ships with logs, metrics and traces. As a result, you can find a slow query or a failing call in minutes, not days.
Right-sized architecture
We do not push microservices on every client. If a modular monolith serves you better, we will say so and explain why.
You own everything
Code, cloud accounts, API docs and runbooks stay in your name. We also train your team, so you are never locked in.
Full stack when you need it
Our backend engineers work next to web and mobile teams. That way, one partner can deliver the whole product when you want it.
Is your backend slowing the product down?
Share your stack and pain points. In one call, we will flag the main risks and the quickest fixes.
Process
How Our Backend Development Services Work
Every project follows the same six steps. As a result, you always know what ships next, who owns it and how to roll it back. For cloud-native patterns, read our cloud-native architecture guide.
- 01
Discover and audit
We review your goals, users, data and current systems. Then we list the risks and the quick wins.
- 02
Design contracts and data
Next, we draft the architecture, API contracts and data model, and you sign them off.
- 03
Build in short sprints
Each sprint ships working endpoints with tests. You see a demo every two weeks.
- 04
Test load and security
Before release, we run load tests, contract tests and API security checks.
- 05
Release with CI/CD
Pipelines deploy each change with health checks. If a release fails, it rolls back.
- 06
Run, observe and improve
Finally, we watch traces, alerts and costs, then tune the slowest paths first.
Engagement
Engagement Models for Every Stage of Your Product
You can start our backend development services with a review, a full team or ongoing support. Then you can switch models as your product grows.
Backend architecture review
Best for: Teams with a slow, fragile or hard-to-change backend
A fixed-scope audit of your code, APIs, data and cloud setup. You get a ranked list of risks and a clear fix plan.
Discuss this model- Most chosen
Dedicated backend team
Best for: New products and major rebuilds
A team of backend engineers, a tech lead and QA that works as part of your product org, sprint after sprint.
Dedicated development teams Support and modernization
Best for: Live systems that need care and steady upgrades
An ongoing retainer for monitoring, fixes, upgrades and step-by-step modernization. You can scale it each quarter.
Discuss this model
Proof
Backend Projects We Have Shipped
A few of the APIs, integrations and real-time systems our backend development services teams have built for clients.
- Enterprise integration
AI Voice Agent Integrations
Custom REST API connectors with authentication link one voice agent to CRM, ERP and ServiceNow. So it can check live orders and open IT tickets during a call.
Read the case study - Mobile gaming
Real-Time Multiplayer Ludo
A Node.js, Socket.IO and MongoDB backend validates every turn, dice roll and move on the server. That keeps four players in sync and blocks tampering.
Read the case study - Nonprofit
ActiveCampaign Email Verification
An event-driven connector: a CRM webhook triggers a Validity API check, then tags each new contact as valid or invalid in real time.
Read the case study - Education
Event Platform for 6 Campuses
One platform replaced four tools for 1,900+ events a year. It also syncs with the university SIS and LMS.
Read the case study
Client feedback
What Our Clients Say
Verified reviews from Clutch and feedback from SDLC Corp clients, shown as published.
SDLC Corp delivered our custom software on time with outstanding professionalism and communication. A reliable partner we'll definitely work with again.
Doug SchmidtCEO, RoofAid USA
SDLC Corp client
They were patient, looked through the project while learning the business processes involved.
IT SpecialistProofchain Protocol Provider
Verified review on ClutchLegacy Product Revamp for Proofchain Protocol Provider
They do a good job of providing me exactly what I want.
Rahul KumarOwner, Washingguns
Verified review on ClutchCustom Software Development for On-Demand Laundry Service
Industries
Industries We Build Backends For
Rules on data, uptime and peak load differ by sector. So our backend development services bring patterns that already work in your field. For large internal platforms, see our enterprise software development work.
Fintech and payments
Ledgers, payment APIs and audit trails where every request must be traceable.
Healthcare
Patient data services with strict access rules, designed around HIPAA needs.
Education
Student, event and LMS integrations that hold up on enrolment and exam days.
Logistics and ports
Tracking, alerts and partner integrations for fleets, yards and vessels.
Retail and ecommerce
Catalog, cart and order APIs that scale for sales and holiday peaks.
Gaming
Real-time match servers, wallets and leaderboards with server-side checks.
SaaS and startups
Multi-tenant backends with billing, usage tracking and a clear path to scale.
Public sector
Secure portals and data exchange between departments, often with in-country hosting.
Buying guide
Backend Development Services Cost: What Drives the Budget
The price depends on your scope, not on a rate card. Therefore, the best way to compare vendors is to compare how they plan. These six factors move the number most.
- 1
Scope and integrations
First, the number of endpoints, workflows and outside systems sets the base effort.
- 2
Architecture style
A modular monolith costs less up front. Microservices cost more, yet they suit large, fast-moving teams.
- 3
Data and migration
Large data sets, complex models and live migrations add design and test time.
- 4
Security and compliance
Regulated data adds controls, reviews and audit evidence to each release.
- 5
Performance targets
Strict latency and uptime goals need more load testing, caching and redundancy.
- 6
Support model
Finally, monitoring, on-call and upgrades add a monthly cost after launch.
FAQs
Backend Development Services FAQs
Straight answers to what buyers ask us most about stacks, security, timelines and cost.
Ask Your Own QuestionWhat are backend development services?
Backend development services cover the server side of an app. That includes APIs, business logic, databases, authentication, integrations, cloud hosting and monitoring. In short, it is everything that runs behind the screen your users see.
What is the difference between backend and full stack development?
Backend work focuses on servers, APIs and data. Full stack development covers both the backend and the user interface. If you need the whole product built, our full stack team can take it on.
Which backend languages and frameworks do you use?
We work with Node.js, Python, Java, C#, Go, PHP and Ruby, using frameworks such as NestJS, Django, FastAPI, Spring Boot, ASP.NET Core and Laravel. We pick the stack that fits your team, load and hosting.
Should we choose REST, GraphQL or gRPC?
REST suits most public and partner APIs. GraphQL helps apps with many screens fetch exactly what they need. gRPC is fast for calls between internal services. Many systems use two of them.
Do we need microservices?
Not always. Microservices help large teams release on their own schedule, but they add moving parts. For new products, a modular monolith is often faster and cheaper, and you can split it later.
How do you secure APIs?
We use OAuth 2.0 and OpenID Connect for identity, short-lived tokens, role-based access, rate limits and input checks. We also test against the OWASP API Security Top 10 and encrypt data in transit and at rest.
How long does backend development take?
It depends on scope, integrations and data. A review takes a few weeks. After that, we ship in two-week sprints, so the first working endpoints arrive early rather than at the end.
How much do backend development services cost?
Cost depends on scope, integrations, architecture, data volume, security needs and the support model. After a discovery call, we share a cost range and a phased plan.
Can you take over or modernize an existing backend?
Yes. First, we audit the code, data and infrastructure. Then we stabilize it and move parts to new services one route at a time, while the old system keeps running.
Who owns the code and do you offer support after launch?
You own the code, cloud accounts, API docs and runbooks. After launch, our support plans cover monitoring, fixes, upgrades and performance tuning.
Start your build
Ready to Build a Backend Your Product Can Grow On?
Tell us about your product, stack and goals. After one short call, you will get the key risks, quick wins and a first-release plan.
- Free consultation
- NDA on request
- You own the code
Contact Us
Share a few details about your project, and we’ll get back to you soon.
Let's Talk About Your Project
- Free Consultation
- 24/7 Experts Support
- On-Time Delivery
- sales@sdlccorp.com
- +1(510-630-6507)