Can you take over an existing SaaS product?

Yes. We begin with a paid architecture audit covering tenancy, security and scaling limits, then propose a sequenced plan — usually incremental rather than a rewrite.

How do you handle compliance?

We build the technical controls SOC 2 and ISO 27001 require — audit logging, access control, encryption, backup verification — and work alongside your auditor. We don't sell certification itself.

What about enterprise requirements?

SSO, SCIM, audit export, data residency and custom retention policies are the ones that block deals. We build them in early because retrofitting tenancy-aware controls is painful.

Service 06 / 14

SaaS Development

The architectural decisions you make in month one decide whether your hundredth customer is routine or an emergency. We build multi-tenant platforms that scale horizontally — stateless services, enforced isolation, an event backbone — so growth is a capacity question rather than a rewrite.

Book a consultation Get a quote

Typical duration: 16–28 weeks
Engagement: Team of 4–6 · Retainer
Right for you if: Founders taking a proven service and productizing it
Companies whose internal tool has become sellable
SaaS products hitting architectural walls under load
Teams needing enterprise features to close bigger deals

Problems

You're probably here because of one of these.

If more than one sounds familiar, that's normal — they usually share a root cause.

Tenancy was an afterthought

Customer data isolated by a WHERE clause and good intentions. One missing filter becomes a breach notification.

Billing is held together by hand

Manual invoicing, no proration, no dunning, and revenue reconciliation that takes a week every month.

Enterprise deals stall at security review

No SSO, no audit log, no data-residency answer — so the deal dies in procurement.

Onboarding needs a human every time

Every new customer requires manual setup, which caps growth at the size of your ops team.

Approach

How the work actually runs.

From first conversation to running in production. Typical end-to-end duration for saas development is 16–28 weeks.

01
Discovery
1–2 weeks
We map the problem before proposing a solution. Stakeholder interviews, constraint analysis, and a written scope you actually own.
- Stakeholder interviews and workflow mapping
- Technical constraints and integration audit
- Written scope, risks and success metrics
- Fixed-price proposal with a delivery plan
02
Architecture & design
2–3 weeks
System design and interface design happen together, so the thing we draw is the thing we can actually build.
- Tenancy model and data isolation strategy
- Subscription, plan and entitlement architecture
- Onboarding and activation flow design
- Multi-region and data-residency planning
03
Build
10–18 weeks
Two-week iterations against a shared board. You get a working deployed environment from week one and a demo every sprint.
- Enforced tenant isolation at the data layer, not the query layer
- Subscription billing with proration, trials and dunning
- SSO, SCIM provisioning and immutable audit logging
- Self-serve onboarding with usage metering and limits
04
Hardening
1–2 weeks
Automated test coverage, load testing, accessibility audit and a security review before anything touches production.
- Unit, integration and end-to-end test suites
- Load and performance profiling under realistic traffic
- WCAG 2.2 AA accessibility audit and remediation
- Dependency, authentication and access-control review
05
Launch
1 week
Staged rollout with monitoring in place before traffic arrives. Rollback is tested, not assumed.
- Autoscaling infrastructure with per-tenant observability
- Status page, incident process and on-call rotation
- Admin console for support and impersonation with audit
- Documentation for your own support and sales teams
06
Operate
Ongoing
We stay on. Response-time SLAs, proactive dependency upgrades, and a roadmap review every quarter.
- Uptime, error and performance monitoring with alerting
- Defined severity levels and response-time commitments
- Scheduled dependency and security patching
- Quarterly roadmap and architecture review

Included

What you get, spelled out.

Every item here is part of the engagement, not an upsell discovered halfway through.

Enforced tenant isolation

Row-level security at the database, so a missing filter can't leak another customer's data.

Subscription billing

Plans, seats, usage metering, proration, trials and dunning wired to Stripe.

SSO and SCIM

SAML and OIDC with directory provisioning — the features that unblock enterprise procurement.

Immutable audit log

Every privileged action recorded, exportable, and impossible to alter after the fact.

Self-serve onboarding

New customers reach first value without your team touching anything.

Usage metering

Accurate limits and overage tracking that reconcile with what you bill.

Admin console

Support tooling with scoped impersonation, fully audited.

Per-tenant observability

Metrics, logs and distributed traces sliced by customer, so you find the noisy tenant before they escalate.

Stack

What we typically build this with.

A default, not a rule. If your team already runs something else and it fits the requirement, we work in your stack.

Next.js

Server rendering, streaming and edge delivery without hand-rolling the infrastructure.

TypeScript

Types across the whole stack. Most integration bugs stop being possible.

NestJS

Opinionated module boundaries and dependency injection — what keeps a service from becoming a ball of mud at scale.

PostgreSQL

Our default. Transactional integrity, JSON, full-text search and row-level security in one engine.

Redis

Caching, rate limiting, queues and sessions. Boring in the best way.

Kafka

Durable event log for service-to-service communication. Consumers can be replayed and added without touching producers.

Kubernetes

At real scale only. Below it the operational cost outweighs the benefit, and we'll say so.

AWS

Widest service coverage and the compliance posture enterprises expect.

GraphQL

For clients that need flexible reads without a new endpoint per screen.

Docker

The same image in dev, CI and production. 'Works on my machine' ends here.

Why Devsock

The difference is in how the work is run.

Ten dimensions where engagements usually go wrong, and what we do instead. Every claim in the right-hand column is something you can verify in the first two weeks.

DimensionTypical agencyDevsock

Estimates
TypicalAn hourly rate and a range that grows once work starts.
DevsockFixed scope and fixed price after a paid discovery. Changes are quoted before they enter a sprint.
Communication
TypicalA weekly status email written by an account manager.
DevsockDirect access to the engineers building it, a shared board you can read any time, and a demo every second week.
Code ownership
TypicalDelivered at the end, sometimes with a proprietary framework attached.
DevsockYour repository, your cloud account, from commit one. No proprietary layer, no licensing.
Testing
TypicalManual clicking before launch, if the timeline allows.
DevsockAutomated suites in CI, load testing at projected peak, and a WCAG 2.2 AA audit before release.
Architecture
TypicalWhatever the available developer knows best.
DevsockA written architecture decision record explaining what we chose, what we rejected, and why.
Security
TypicalAddressed if the client raises it.
DevsockDependency scanning in CI, least-privilege access, secrets management and a pre-launch review as standard.
Accessibility
TypicalOut of scope unless legally forced.
DevsockWCAG 2.2 AA designed in and audited. Keyboard and screen-reader tested, not assumed.
Handover
TypicalA zip file and a phone number that stops answering.
DevsockDocumented architecture, runbooks, and a paid handover period so your team can genuinely take over.
After launch
TypicalA new quote for every bug.
DevsockDefect fixes covered for 90 days. Support retainers carry response-time SLAs in the contract.
Saying no
TypicalEvery request becomes a line item.
DevsockWe'll tell you when a feature isn't worth building, or when the answer isn't software at all.

Work

What we've built, and what it changed.

Live products you can open and use. Each one names the constraint, the approach and what shipped.

All case studies

SaaS · Waste management

Roll Off Rolodex

rolloffrolodex.com

Next.js
TypeScript
React Native
PostgreSQL
Redis
Stripe
AWS

Multi-tenant SaaS platform and driver apps for dumpster rental operators

Challenge

Dumpster rental operators run bookings, fleet position, driver assignments and invoicing across spreadsheets, whiteboards and phone calls. Nobody knows where a container actually is, proof of service arrives days after the job, and billing gets reconstructed from memory at month end.

Solution

A multi-tenant SaaS platform with self-serve signup, subscription billing and tiered plans, paired with native driver apps on iOS and Android. Operators get real-time container status, driver scheduling with route optimisation, customer and contract management, and automated invoicing. Drivers receive job assignments and upload proof of service from the field.

What shipped

Native driver apps published to both the App Store and Google Play
Multi-tenant architecture with per-operator data isolation
Self-serve onboarding with a 15-day trial and three subscription tiers
Real-time inventory and container status tracking
Driver scheduling with route optimisation
Automated invoicing and payment processing

Renewable energy

ISSC

issc-int.com

Next.js
TypeScript
Tailwind CSS
Vercel

Corporate platform for an independent renewable-energy consultancy

Challenge

An independent monitoring and evaluation consultancy for renewable energy projects needed to establish credibility with government, industrial and hospital buyers — a sector where procurement turns on verifiable regulatory standing and a demonstrable track record, not on marketing copy.

Solution

A structured corporate platform built around proof rather than persuasion: service definitions for independent oversight and technical training, a credentials section surfacing regulatory compliance across SECP, FBR, PRA and PEC, team profiles establishing sector experience, and a documented track record of verified installations. Enquiries route directly to the consultancy team.

What shipped

Structured service architecture across oversight and training lines
Regulatory credentials surfaced as the primary trust signal
Track record documented across government, industrial and public-health installations
Team credibility profiles with sector experience
Enquiry capture routed to the consultancy team
Server-rendered and fully indexable

Training & certification

Global Consulting for Safety and Environment

globalconsulting-int.com

Next.js
TypeScript
PostgreSQL
Tailwind CSS
AWS

Training platform with multi-country scheduling and certificate verification

Challenge

A QHSE training provider delivering internationally accredited certifications across Saudi Arabia, the UAE and Pakistan needed to publish a constantly moving multi-city schedule, take registrations online, and let employers independently verify that a certificate is genuine — the last of which is what makes an accreditation worth anything.

Solution

A training platform combining a published course schedule across multiple countries with online registration, a separate corporate training enquiry path, and a public certificate verification tool employers can use to authenticate credentials. Accreditation bodies and trainer profiles are presented as structured, checkable content rather than a logo wall.

What shipped

Public certificate verification for employers
Multi-country training schedule with online registration
Separate paths for open-enrolment and corporate training
Course catalogue spanning ISO, OSHA, IOSH, NVQ and Lean Six Sigma
Accreditation bodies and trainer credentials as structured content
Server-rendered and fully indexable

Further work sits behind NDAs. We can walk you through the architecture and measured outcomes of those engagements under mutual NDA.

Request a walkthrough

FAQ