Hashlogics
Hire

Hire SaaS developers who build what a demo hides

A demo shows features. A SaaS product also needs tenancy, billing states and roles that hold up when a real customer signs up. Our engineers have built that layer for platforms running in 38+ countries, and you interview them before anyone starts.

What you are getting

4 things that decide this

  1. 01Senior engineers who design tenancy and data isolation before they design a feature, because that decision is expensive to reverse once customers are live.
  2. 02You interview every engineer before they join your team, so nobody is assigned to your project from a profile you never saw.
  3. 03They treat billing states, trials, dunning and downgrades, as core product work rather than an afterthought bolted on before launch.
  4. 04They embed in your repo and your standups and stay on the same project. If the fit is wrong, we replace them and every line they wrote is yours.

What a SaaS developer actually does here

A working demo and a product a stranger can sign up for are different builds. The gap is tenancy, billing and permissions. None of that shows up in a walkthrough video.

On Broollie, our engineers built multi-tenant meeting management now running across 38+ countries. Role-based access and Stripe subscription billing were wired in from the start. On Golancer, they built a Stripe invoice engine and two-way Google Calendar sync for individual freelancer accounts at scale. On Maidily, they built the scheduling, CRM, invoicing and payments layer for a field-service SaaS product. The client reported 4X faster payment collection and 75% fewer no-shows after launch.

Three different products, one repeated job. Make the account boundary, the subscription state and the role hold under a paying customer, beyond a demo login.

What they take off your roadmap

Multi-tenancy, decided early

Row-level isolation or a schema-per-tenant call, made before the feature list grows around it. Reversing this after launch means a migration your customers feel.

Billing as a state machine

Trials, upgrades, downgrades, failed cards and dunning, mapped as states with a defined transition, not a Stripe webhook handler bolted on at the end.

Roles that survive a real org chart

Owner, admin, member and guest, with permissions enforced in the database query. Hiding a button in the interface is not enough if the endpoint behind it is still open.

Usage instrumented from day one

Every plan-relevant action logged from the first release, so a pricing tier or a usage-based limit is a report away instead of a rebuild.

How an engineer joinsLive
  1. Scoping callFree. What you are building
  2. ShortlistEngineers matched to the work
  3. You interviewYour process, your bar
  4. EmbedYour repo, standups, tools
  5. ReviewSwap if the fit is wrong

The interview is yours. A marketplace that assigns a vetted profile skips the step that predicts fit.

How hiring works

  1. 01

    Tell us what you are building

    A free call about the product, who your customers are, and what stage the build is at. If a full rebuild is the wrong answer, you will hear that on the call.

  2. 02

    Meet the engineers

    We shortlist people who have shipped tenancy and billing into production, and you interview them yourself. Say no and we go back to the shortlist.

  3. 03

    They embed

    Your repo, your standups, your ticket system. One engineer is named as accountable for the account and billing layer.

  4. 04

    They hand over

    The schema, the billing state machine and documentation your team can run without us. Where a client wants us to keep watching production, we do that under a service level we agree. The first 2 months of support and maintenance are free, with every build.

Under the hood

Stack

Application

BubbleNext.jsNestJSFastAPI

Billing and data

StripePostgreSQLRow-level securityRedis

Practices

Multi-tenant isolation testsRole-based access controlUsage instrumentationStaged rollout before production
Next step

Tell us where your SaaS build is stuck

Bring the account model you have today, even a rough one. The scoping call is free, and you will leave it knowing what tenancy and billing actually need for your product.

Questions, answered
01How is this different from a freelancer or a job board hire?

You get an engineer who has already shipped multi-tenant billing to production, plus a company accountable if it goes wrong. A job board hands you a candidate and a hiring risk you carry alone. If our engineer is not right, we replace them, which is not a conversation you can have with a contractor you found yourself.

02Can we bring in a SaaS developer partway through an existing product?

Yes, and it is common. The scoping call covers what exists today: the current tenant model, the billing integration and the parts nobody has load-tested against a second customer. Where we need to read the existing codebase first, a paid two-week diagnostic replaces a guess with a fixed price.

03How much overlap do we get with our working day?

A daily overlap with your hours, fixed before anyone starts. Standups, reviews and pairing happen while both sides are awake, because a tenancy or billing decision is a conversation, not a ticket. We agree the window during scoping and it does not move without you.

04Who owns the schema and the billing logic?

All of it is yours from the first commit. That includes the database schema, the tenant isolation tests and the billing state machine. That last piece is what keeps working correctly after we are gone.

05What actually drives the cost of a SaaS build?

How many roles and billing states the product needs, more than the number of screens. A single-tenant app with one pricing plan is quick; multiple roles, usage-based billing and self-serve signup are the real work. Scoping calls are free. Where we need to review an existing codebase first, a paid two-week diagnostic produces a fixed price rather than a range.

Written by Abdul Basit, CEO, HashlogicsVerified
Start

Let’s build the one that runs after.

We build AI agents and automation, then stay on under an agreed service level. A senior engineer reads every brief, and your call gets scheduled within 24 hours.

What happens next

  1. 01

    You send a brief or book a call

    Two minutes, whichever you prefer.

  2. 02

    A senior engineer replies within 24 hours

    Not a sales rep.

  3. 03

    Honest scoping, in writing

    And if we’re not the right fit, we say so.

Abdul Basit, CEO of Hashlogics

“I started Hashlogics because too many teams ship a demo, get paid, and disappear. We build to a standard we’d run ourselves — and we stay to keep it running.”

Abdul Basit · CEO · a direct line

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