Application Engineering

Custom Software Development

We design, build, and maintain custom software end to end, from the enterprise systems that hold up under scale, to the legacy platforms we modernize, to the AI capabilities and APIs that connect it all, engineered by one team, not stitched together across vendors.

Scope Your Custom Build

By the Numbers

Custom software is measured by what it removes from the working day, not by lines of code.

120+Custom platforms delivered

45+Enterprise systems modernized

4 yrsAverage client relationship length

300+Integrations shipped

How We Build Custom Software

One team for architecture, delivery, and everything after launch.

Custom software at Devsinc covers the full range a growing business actually needs, new systems built from scratch, enterprise platforms engineered for scale, SaaS products designed for multi tenant growth, legacy systems modernized without downtime, and the API integrations that keep all of it talking to the rest of your stack. Increasingly, that also means building AI into the business logic itself, not just the workflow around it.

When we say custom software, we mean a system built around your specific workflows and constraints, not a configurable template you adapt your business to fit. You keep full ownership of the code and architecture, we handle the engineering, from the first requirements conversation through post launch support.

Capabilities

What this team actually delivers

01Custom Business ApplicationsPurpose built software for the specific workflows off the shelf tools force you to work around.

02Enterprise SystemsSecure infrastructure, seamless integrations, and platforms engineered to keep large organizations running without friction.

03SaaS Product DevelopmentMulti tenant architecture, subscription billing, and products designed to scale with every new user.

04Legacy System ModernizationRebuilding outdated systems on modern architecture with a migration path that never stops the business.

05API and System IntegrationReliable endpoints and integrations that make a client's existing stack feel like one product.

06AI Enabled Business LogicEmbedding automation and decision support directly into custom applications, built alongside the AI and Data Systems team rather than treated as a separate project.

07Ongoing Maintenance and SupportMonitoring, updates, and evolution after launch, not a handoff and disappear engagement.

Tools & Technologies

Equipped with the latest tools

ReactNode.jsPython (FastAPI)Java (Spring Boot).NET / ASP.NET CoreGoGraphQLReactNode.jsPython (FastAPI)Java (Spring Boot).NET / ASP.NET CoreGoGraphQL

PostgreSQLMongoDBAWSTerraformAzureDockerKubernetesPostgreSQLMongoDBAWSTerraformAzureDockerKubernetes

ReactNode.jsPython (FastAPI)Java (Spring Boot).NET / ASP.NET CoreGoGraphQLPostgreSQLMongoDBAWSTerraformAzureDockerKubernetes

Industries

Where this work lands

01Financial ServicesCustom platforms for workflows that off the shelf finance software cannot accommodate.

02HealthcareSystems built around compliance requirements from day one, not retrofitted after the fact.

03Logistics and Supply ChainPlatforms that unify tracking, inventory, and fulfillment data across disconnected systems.

04Real Estate and PropTechEnterprise systems and portals for transaction and asset management at scale.

05Professional ServicesInternal tools that replace manual, spreadsheet driven processes.

Engagement Models

Two ways to bring us in

Let's Talk

Embedded TeamEngineers embedded directly in your team and your sprints, for when you need to move fast without a hiring cycle.

Full BuildThe team behind your system end to end, requirements, architecture, development, deployment, and ongoing support.

Process

How the work runs

01Requirements and PlanningUnderstanding your business goals, current workflows, and requirements, then defining a clear roadmap and timeline before development begins.

02Architecture and PrototypeDesigning the system architecture and building prototypes that validate the approach before a single production line of code is written.

03Development and TestingSenior engineers building in short, reviewable increments, with automated testing, code review, and continuous integration.

04Deployment and SupportShipping to production with zero downtime strategies, then staying on to monitor, maintain, and evolve the system with the business.

FAQs

Frequently Asked Questions

Still have a question about timelines, security, or ownership?

Let's talk

How long does a typical custom software project take?+

Most projects run three to six months from kickoff to launch, depending on scope. We define a clear milestone plan in the first two weeks so you always know where things stand.

What determines the cost of a custom build?+

Scope, integration complexity, and timeline drive cost more than team size, we scope every engagement against a fixed set of requirements first.

Who owns the intellectual property?+

You do, code, designs, and documentation produced under the engagement transfer to you on delivery.

Can you take over an existing codebase?+

Yes, we start with a codebase and architecture audit, then take over development from wherever it currently stands.

Do you handle enterprise scale systems, or only smaller custom builds?+

Both. The same team that builds a single internal tool also engineers enterprise platforms designed for scale.

Can you build AI features into a custom application?+

Yes. The same engagement can include AI capabilities such as automation, prediction, or intelligent workflows, delivered jointly with the AI and Data Systems team.

How do you keep our data secure?+

Access controls, encrypted data at rest and in transit, and secure development practices built into every engagement.

Ready to build software that fits the way you work?

Bring your current systems and your roadmap, we will map where a new build, a modernization, or an integration moves the needle fastest.

Let's Talk