Custom software development for small and mid-sized businesses
Updated
A costed roadmap first, then a fixed-price build. Sthenos Technologies is a US-based custom software development company in Tysons, Virginia. We design, build, and modernize custom web and mobile applications, AI and machine-learning systems, and cloud platforms for small and mid-sized businesses, and for enterprise and government teams.
Our rates are $150 to $250 per hour. Where the scope is clear we quote a fixed price for a defined outcome, with a costed roadmap before any build starts.
Rated 5.0 on Clutch from 43 reviews · Founded 2007 · EDWOSB and WOSB certified
Senior, accountable team
A senior Sthenos lead owns your engagement, not a rotating bench.
Boutique focus, enterprise scale
Through our partner NeoSOFT we can scale a team quickly while keeping that accountability in front.
Security and compliance first
We build to pass customer and regulator security reviews.
EDWOSB and WOSB certified
A certified small business for agencies and primes with set-aside and supplier-diversity goals.
From prototype to production
Many teams now build a working prototype with AI tools, then stall before launch. We take prototypes, including AI-built ones, from proof of concept to secure, scalable, monitored production: code review, hardening, testing, infrastructure, and the compliance controls regulated and government buyers require.
A delivery process built for accountability
- Discovery: we map the problem, constraints, and success criteria before a line of code.
- Design: architecture and UX that fit your users, timeline, and security posture.
- Build: senior engineers shipping in short, reviewable increments.
- Launch: hardening, testing, and a controlled release.
- Support: monitoring, maintenance, and a roadmap tied to business outcomes.
What we build
Custom software development services across web, mobile, AI, cloud, integrations, and legacy modernization.
Custom web applications
Secure, scalable web apps, dashboards, portals, and SaaS products, built end to end.
Mobile applications
Native iOS and Android and cross-platform apps, integrated with your back-end and data.
AI and machine learning
Predictive models, generative-AI features, and AI agents, engineered for production, not demos.
Cloud and data platforms
Architecture, migration, and data pipelines on AWS, Azure, and Google Cloud.
Legacy modernization
Re-platforming and rebuilding aging systems while preserving data integrity and compliance.
Integrations and APIs
Connecting your software to the ERP, CRM, payment, and government systems it has to talk to.
Built for regulated and government buyers
- US federal, state, and local government: EDWOSB and WOSB small business, NAICS 541511, active on SAM.gov, supporting set-aside and socioeconomic goals.
- Financial services and fintech: security, auditability, and integrations the sector demands.
- Healthcare: software built to support HIPAA and customer security reviews.
- Legal: confidential, access-controlled systems for privileged information.
- Technology: product teams that need senior engineering capacity fast.
Custom software development FAQs
What is a custom software development company?
A custom software development company designs and builds software tailored to your specific processes and goals, rather than selling an off-the-shelf product. Sthenos builds custom web, mobile, AI, and cloud software and modernizes legacy systems.
How much does custom software development cost?
Our rates are $150 to $250 per hour. For a defined scope we quote a fixed price, and we give you a costed roadmap before committing to a build.
Do you build custom software for government agencies?
Yes. Sthenos is an EDWOSB and WOSB-certified US firm (NAICS 541511, active on SAM.gov) that builds and modernizes custom software for federal, state, and local agencies.
Can you take an AI-built prototype to production?
Yes. Moving prototypes, including AI-built ones, from proof of concept to secure, scalable, monitored production is a core focus for us.
Where is Sthenos located?
We are headquartered in Tysons, Virginia, and serve clients across the US.
Ready to build? Tell us what you are building and we will tell you how to get it to production. Request a free consultation.
Custom software development means designing and building an application around one organization's process, instead of reshaping the organization around a product somebody else designed. The output is a system your team owns, running on infrastructure in your name, that does the specific thing your business does.
Depending on the seniority and mix of the team, published on the about page.
The two ends of an estimate, not the estimate itself.
Working software arrives every two weeks, not a status report about software.
Typically, for a first production release. Anything more precise is a discovery output.
In depth, further down this page
- What custom software development covers
- Build, buy, or configure what you already own
- How a Sthenos build runs, from discovery to handover
- The engineering practices behind those words
- The technologies a Sthenos build is written in
- Engagement models, and which project each one suits
- What moves the price of a custom build
- What to ask any custom software development company
- Where to start, by who you are
- Related pages, by what you are trying to decide
- Talk to our engineers
What custom software development covers
The output is not a category. Sthenos Technologies sells it in the eight shapes below, and each one has its own page on this site.
The internal portal, the customer dashboard, the workflow tool that currently lives in a spreadsheet nobody trusts. Browser delivered, so nothing has to be installed and access can be revoked centrally. See web app development and web development services.
Software that has to work in a pocket, in a warehouse, or in a truck, where the network is intermittent and the device is the interface. Native and cross platform both apply, and which one is right is a cost and a capability question rather than a matter of taste. See mobile app development.
A product sold to many customers from one codebase, where tenancy, billing, onboarding and per customer isolation are the architecture rather than features bolted on later. See SaaS development services.
Software that has to survive a security review, an audit, an acquisition and a change of leadership, and that usually replaces or wraps something already load bearing. See enterprise software development.
The narrowest version of the product that can be put in front of real users and learned from. The discipline is subtraction, and the risk is building the second version before anybody has used the first. See MVP development services.
Connecting the new system to the finance, sales, records and government systems it has to talk to, where custom projects spend much of their budget. See ERP, SAP, CRM and Salesforce consulting.
Rebuilding or re platforming a system that still runs the business but can no longer be changed safely, without losing the data or the compliance position built up around it. It is one of the six lines under What we build above. See cloud migration and optimization and digital transformation.
Reporting, prediction, retrieval and agents built into the application itself rather than sold as a separate platform. See AI and machine learning, agentic AI, big data and analytics and data analytics services.
Build, buy, or configure what you already own
Requests that arrive as "we need custom software" have three honest answers, and only one of them is a build. A build nobody needed is expensive to own, which is why this site already publishes the position that Sthenos will tell you plainly when your case is not one of the narrow set where building is the right call. Work through the three in this order.
Figure 1. The test that settles most of these
Caption: the test is not technical, and it is stated in the closing paragraph of this section. Nothing in the figure is a measurement; it is the question in the copy, drawn.
Buy, when a packaged product already covers the work
A packaged product carries its own maintenance, its own security patching and its own roadmap, paid for by every other customer. That is the whole argument, and it is a strong one. Buy when the process you are automating is the same process your competitors run, when the product covers it without heavy configuration, and when the licence cost is proportionate to the number of people who will actually use it. Where this goes wrong: buying the product and then paying to bend it into a shape it was never designed for.
Configure, when the platform is right and the fit is wrong
The middle answer is the one buyers skip. If you already own a CRM, an ERP, a commerce platform or a content platform, the gap is often configuration, data quality and integration rather than a missing system. Sthenos sells that work as CRM, ERP, CMS and Magento engagements.
Its published position on the commercial conflict is plain: we are platform-independent and we do not resell licences, so the recommendation you get is the one that fits, not the one that pays us a margin. Where this goes wrong: accumulating so much custom configuration that you have built the system anyway, inside a platform that now cannot be upgraded.
Build, when the process is the advantage
Build when the process is genuinely how you compete, when per seat licensing is high against low usage, when data residency or a control framework rules out the hosted option, or when the integration surface is so specific that no product will ever cover it. A build is also the right answer when you need to own the system outright: the repository and the cloud accounts are in your name from the first commit. Where this goes wrong: building a commodity, and then owning its maintenance forever.
The test that settles most of these is not technical. Write down the process you are automating and ask whether a competitor could copy it and be at parity with you. If yes, buy or configure. If no, that process is the reason to build.
How a Sthenos build runs, from discovery to handover
The five stage outline above says what happens. This is the longer form: who is involved in each stage, what leaves the stage as a document or a running system, and what you should be able to see for yourself at the end of it.
Sthenos works in two week sprints, so working software arrives every two weeks and a first production release typically lands in three to six months, as published on the about page. Those are the only two timings on this page, and nothing else here is given a duration, because every other stage is a function of your scope rather than of our process.
Figure 2. The only two timings on this page, drawn to scale
Caption: both figures in this diagram are the ones published on the about page and repeated in the paragraph above, the two week sprint cadence and the three to six month first release window. Nothing else on this page is given a duration.
- DiscoveryThe problem, the constraints and the success criteria are mapped before a line of code. The output is a written scope, the list of systems the software has to talk to, the control framework the contract names, and the measure that will tell you whether this worked. If discovery does not change anything about the brief you arrived with, it was not discovery.Written scope
- Architecture and designTechnical design, not visual design, and the two are frequently confused in proposals. This stage decides the data model, where state lives, how the system fails, how it scales, and how a reviewer will later verify its security posture. Interface design runs alongside it. A proposal with no architecture step is a proposal where somebody invents the architecture mid build, usually under deadline.Architecture decisions in writing
- Build, in two week sprintsWork is cut into increments that end in something reviewable rather than something described. Each sprint is a chance to change direction while changing direction is still cheap, which is the entire reason for a short cadence. You see running software on the cadence above rather than a status report about running software.Working software every two weeks
- ReleaseHardening, testing and a controlled release, with the rollback path decided before the deployment rather than during the incident. The production readiness checklist on this site is the standard being applied here, and you can score a system against it yourself without involving us.A controlled release
- HandoverThe platform underneath your application is built so your own engineers can run it once we hand it over. In practice that means the repository and the cloud accounts in your name, and the operational knowledge written down in a form somebody who was not on the project can act on. Handover is a deliverable, not an event at the end.Repository and cloud accounts in your name
- SupportMonitoring, maintenance and a roadmap tied to business outcomes. The question that matters here is whether you would notice a problem before your customers do, which is exactly what the production readiness audit examines.Monitoring, maintenance and a roadmap
The engineering practices behind those words
Every firm in this category claims quality. The claims are worth nothing unless you know what the underlying practices actually are, so here is each one defined, plainly, with what it buys you and what its absence costs. Use these as questions for any vendor, Sthenos included. None of the paragraphs below reports a measurement of our own work, because a number nobody can audit is not evidence.
- Code review, with a reviewer who can block a merge
- Automated testing that runs on every change
- Continuous integration and delivery
- Observability: logs, metrics, traces and alerts
- Security by design, not retrofitted
- Documentation and runbooks as deliverables
- Accessibility, which for federal buyers is procurement law
Code review
Every change is read by a second engineer before it merges. The value is not catching typos, which tooling does better. It is that a second person has to be able to understand the change, which is the only cheap defence against a system only one person can maintain. The question that separates real review from theatre is whether the reviewer can actually block a merge.
Automated testing
Tests that run without a human, on every change, so a regression is found by the pipeline rather than by a customer. Coverage is a useful practice and a poor target: chasing a percentage produces tests written to touch lines rather than to catch faults. The honest questions are which behaviours are covered, whether the suite runs on every commit, and what is still verified by hand. See quality engineering and test automation.
Continuous integration and delivery
A pipeline that builds, tests and deploys the same way every time, so releasing stops being an event that requires a specific person on a specific laptop. The payoff is smaller, more frequent, more reversible releases. See DevOps consulting and DevOps engineering.
Observability
Logs, metrics, traces and alerts that reach somebody who can act. Observability is not a dashboard nobody opens. The test is the one the production readiness audit applies: would you find out about a problem before your customers tell you, and does the alert reach a person with the access to fix it.
Security by design
Threat modelling, authorization checked at the boundary rather than in the interface, secrets held outside the codebase, dependencies patched on a schedule, and standing credentials that do not survive a person leaving. Retrofitting any of that after the build is where security budgets go to die. See cybersecurity and penetration testing services, which name the review methods used.
Documentation and runbooks
A runbook is the document somebody follows at three in the morning when the thing they have never seen before happens. It names the failure, the check, the fix and the escalation. General documentation ages; a runbook for the most likely failures earns its keep. Ask any vendor what documentation is a contractual deliverable rather than what they intend to write.
Accessibility
Software that works with a keyboard, with a screen reader, at high magnification and without relying on colour alone to carry meaning. For federal buyers this is procurement law rather than preference, and Section 508 compliant front end development is already part of what Sthenos sells to the public sector. Building it in costs a fraction of retrofitting it after a complaint.
The technologies a Sthenos build is written in
Every technology below has its own page on this site, and each name links to it. Nothing is named here that Sthenos does not already publish a page for, which is a deliberately narrow rule: a stack list is the cheapest thing in this industry to exaggerate. The broader catalog, including the services that surround these technologies, is on software development services.
If the technology your team is standardized on is not on that list, say so in the first conversation. Sthenos Technologies would rather tell you it is the wrong firm for the job than learn your stack on your budget.
Engagement models, and which project each one suits
Sthenos sells a custom build in three commercial shapes, and the mistake buyers make is choosing the shape before the scope is understood rather than after. Sthenos Technologies charges $150 to $250 per hour depending on the seniority and mix of the team, and a typical project runs $50,000 to $200,000, both published on the about page. Those two figures are the only ones this section adds, and they are the same ones published across this site.
Fixed price, for a defined scope
Where the scope is clear, Sthenos quotes a fixed price for a defined outcome, with a costed roadmap before any build starts. Best for a first release with a hard budget, a discrete integration, a migration with a known endpoint, or any procurement that has to name a number before it can be approved. The condition that makes it work is that changing the scope changes the price, and both sides say so in writing at the start.
Time and materials, at the published rate
The rate band above, applied to the hours actually worked. Best for a product that is still being discovered, a modernization where the codebase has not been fully surveyed, or an engagement where the priority list is expected to change every sprint. The condition that makes it work is visible progress on a short cadence, which is what the two week sprint exists to give you.
An embedded team alongside your own
Engineers working inside your process, your backlog and your standards rather than against a separate statement of work. Best when the constraint is capacity rather than direction, and when you already have the technical leadership to point it. See team augmentation, software outsourcing and the comparison of staff augmentation firms published on this site.
What moves the price of a custom build
None of the drivers below carries a number here, because a number without your scope attached to it is decoration. What they do is tell you which questions actually change the estimate, so you can compare two proposals that look different for reasons nobody has explained. The longer written treatment is in what custom software costs.
Which custom software companies offer a fixed-price discovery phase before the build?
Sthenos Technologies does. Before an MVP build it offers a short startup consulting engagement that is fixed-price and separable from the build. On larger projects a short, bounded discovery ends in a firm estimate and a costed roadmap, and where the scope is clear the build is quoted as a fixed price for a defined outcome.
Who can build secure, audit-ready custom software for regulated industries like financial services and healthcare?
Sthenos Technologies builds custom software for financial services, healthcare and government buyers with encryption in transit and at rest, role-scoped access, immutable audit logging, and a delivery pipeline in which no single person can move code to production unreviewed, documented so it supports your security and compliance reviews. It holds no SOC 2, ISO, HITRUST or PCI DSS attestation of its own, so ask any vendor which control framework your contract names and what evidence it will hand over against it.
What to ask any custom software development company
These questions are not about Sthenos Technologies, they are about this category, and every one of them is already published somewhere on this site so you can put all of them to us as easily as to anybody else. The shortlisting version, aimed a stage earlier, is on software development services.
- Ask what happens when the estimate is wrong. Every estimate is wrong somewhere. The answer tells you how the relationship will actually work. (software development services)
- Ask for a system they still maintain. Launches are easy to show. Three years of uptime is not. (software development services)
- Ask what they would not build. A firm that accepts every brief is selling capacity, not judgement. (software development services)
- On testing, ask specifically what is automated and what is manual. Test is where cheap quotes are usually cheap. (software development services)
- Ask what the code looked like when someone else took it over. Anyone can ship once. What the next team inherited is the real review. (MVP development services)
- Ask what they have integrated with, by name and version. Experience with a platform and a completed integration against it are different claims. (healthcare software development)
- Ask which certifications are audited and which are self declared, then ask for the report date. This one question separates most of the field. (healthcare software development)
- Ask who reviews the code, and whether that person can veto a merge. Reviewers are often the same people who wrote it. (software outsourcing services)
What clients describe on Clutch (as of October 2026)
Sthenos Technologies is rated 5.0 on Clutch from 43 client reviews, 23 of which carry Clutch's Verified label. Of the 43, 29 are tagged Custom Software Development, and 15 of those 29 are Verified. The projects they describe include rebuilt internal tools and reporting, ERP, CRM and workflow platforms, backend work in Node.js, .NET, PHP and Java, and mobile apps. The reviews are dated October to December 2025, and most of the reviewing companies are in Australia and the United States. Counts are from the Clutch profile as read on October 6, 2026.
Where to start, by who you are
The same build looks different depending on what is scarce on your side of the table: runway, capacity, governance, or a contracting path. Four routes through this site.
Founders and product companies
Runway is the constraint, so the first release should be the narrowest thing that can be learned from. Start at MVP development, then SaaS development once there is something to sell, and independent software vendors for what changes when the software is the product.
Mid market operators
The constraint is usually that the system running the business cannot be changed safely any more. Start at digital transformation and IT consulting, and if the problem is capacity rather than direction, managed services.
Enterprise engineering teams
The constraint is governance and integration surface, not ideas. Start at enterprise software development, team augmentation for capacity inside your own process, and the production readiness checklist as a gate you can run yourself before anything ships.
Government and regulated industries
The constraint is the control framework the contract names and the evidence you will have to produce against it. Start at government IT services and public sector, and for the sector specific versions, healthcare software development, fintech, financial services and legal.
Related pages, by what you are trying to decide
If you are deciding what to build
Software development services, enterprise software development, MVP development, SaaS development, web development.
If you are deciding who to hire
Software outsourcing services, team augmentation, staff augmentation firms compared, software development in Tysons, Virginia, about Sthenos Technologies.
If you are deciding what it should cost
What custom software costs, production readiness audit, production readiness checklist.
Related case study: online management and communication platform for a construction and engineering company, a centralized platform for real-time collaboration between participants, mentors and administrators.
Ready to scope a build? Tell us the process you are automating and the constraint you are working against, and you will get a straight answer on whether this should be built at all. Talk to our engineers.
