SaaS development services
SaaS development for product companies: multi-tenant web applications with subscriptions, enterprise sign-in and the operations a product sold to many customers needs, built from scratch or added to the SaaS product you already run.
What we build into a SaaS product
Multi-tenant architecture
Tenant isolation decided up front: a shared database with row-level security, a schema per tenant or a database per tenant, chosen by your customers’ compliance needs and your hosting cost.
Subscriptions and billing
Plans, trials, seats and usage-based pricing through Stripe or Paddle, with webhooks handled idempotently so a retried event never charges a customer twice.
Enterprise single sign-on
Sign-in through Microsoft Entra ID, Okta or Google over OpenID Connect and SAML, SCIM provisioning, and roles that each customer’s own admins manage.
Back office for your support team
Tenant lookup, feature flags per tenant, usage reports and support access that is time-limited and written to an audit log.
Answers for security questionnaires
Audit logs, encryption in transit and at rest, per-tenant data export and deletion, and the evidence a customer’s security review or an ISO 27001 or SOC 2 audit asks for.
Releases without a maintenance window
Continuous deployment behind feature flags, database migrations that run in the pipeline and are compatible with the previous version, and staged rollouts across tenants.
Hire SaaS developers
Dedicated SaaS developers
SaaS developers who join your team full time, work in your tools and process, and report to your lead. You interview them; we carry the Ukrainian contract, payroll, invoicing and leave.
SaaS development projects
A defined piece of SaaS development with a scope, a fixed plan and a named lead on our side who owns the result and reports progress in your channels.
Ongoing SaaS development
SaaS development as a continuing service: the same people every month, a backlog you prioritise, and hours you can see in our portal and on the invoice.
The dedicated team page explains how specialists join your team, and the outsourcing page covers project delivery, take-overs and how we charge.
Who works on your SaaS development
Technical lead
Tenancy model, architecture and release process
Backend engineers
.NET, Python, Java or Node.js services and APIs
Front-end engineers
Angular, React or Vue applications and design systems
Cloud and DevOps engineers
Terraform, pipelines, monitoring and cost per tenant
QA engineers
Regression suites that run before every release
How we work on a SaaS product
A SaaS product is never finished, so we build it to change every week: small releases behind feature flags, tests that run in the pipeline, database migrations versioned with the code, and monitoring that shows which tenant an error belongs to. Cost per tenant is designed in, not discovered on the cloud bill.
We run our own company on a platform we built on .NET, Angular and Azure, with row-level security per client and Always Encrypted columns for personal and financial data, and the products we build for clients follow the same rules.
Other solutions we deliver
MVP development
MVP development services for founders and product teams: scoping, a Figma prototype, a web or mobile build and launch on a stack that carries the next version, by dedicated MVP developers or as a project.
Web application development
Web application development services: customer portals, internal tools, dashboards and progressive web apps, with the backend and hosting included, by dedicated web developers or as a project.
API development
API development and integration services: REST and GraphQL APIs, third-party integrations, event-driven messaging and webhooks, monitored on every connection, by dedicated API developers or as a project.
Legacy modernisation
Legacy software modernisation services: take-overs that start with a read-only review, upgrades to current .NET, Java and PHP, and replacement in steps, by dedicated engineers or as a modernisation project.
Cloud migration
Cloud migration services: workload assessment, landing zones in Terraform, and database and application moves to Azure, AWS or Google Cloud with a planned cut-over, by dedicated cloud engineers or as a project.
Questions about SaaS development
Can you add multi-tenancy to our existing product?
Yes. We review how data is separated today, write down the risks, and move to the chosen tenancy model in steps that can each be released, with tests that prove one tenant cannot read another’s data.
Which cloud do you build SaaS products on?
Azure is where our largest practice works every day, and AWS and Google Cloud are options too. The choice follows your customers, your existing accounts and your credits, and everything is declared in Terraform whichever cloud it is.
How quickly can SaaS developers start?
When the right SaaS developer is available, the start is gated only by your interview and the NDA and IP assignment. Otherwise we run a search, which typically produces candidate profiles within two to three weeks, and nobody starts until you have said yes.
How do we hire SaaS developers through BigTree108?
Tell us the work, the seniority and the hours you need. We propose one or two people with their profiles, you interview them the way you would interview your own hire, and you sign one agreement with BIG TREE 108 LLC and receive one invoice a month.
Who owns the work they produce?
You do. Every specialist has a signed contract with BigTree108 that assigns all work product to the company, and our agreement with you assigns it onward. Code, designs and documents are delivered into your own repositories and tools, not kept where only we can change them.
Building or growing a SaaS product?
Tell us who your customers are and what the product does today. You get an answer within one business day: an architecture recommendation, a plan or candidate profiles.