Custom Software Development Company for New York Businesses
SpiderHunts Technologies builds custom software for New York companies — fintech platforms, compliance-heavy data systems, media and publishing tools, proptech and SaaS products. We are London-headquartered and remote-first. No NYC office, no sales floor, just senior engineers working inside your Eastern Time day. Founded 2015. More than 1,000 clients.
Quick Answer — What does a custom software development company in New York do?
A custom software development company builds software for one business rather than selling one product to everybody. In New York that usually means fintech platforms, systems that handle regulated or sensitive data, content and media tooling, proptech applications, and SaaS products that need to reach the market before the runway runs out. SpiderHunts Technologies is a custom software development company that works with New York clients remotely. We are based in London, we have no NYC office, and we run our day so that it overlaps with Eastern Time mornings.
- Where we are
- London, UK (E6 2JA) — remote-first, no NYC office
- Overlap hours
- Roughly 9am–1pm ET every working day
- NYC focus
- Fintech, media, advertising, proptech, SaaS
- MVP timeline
- 6–10 weeks to a first working release
- After launch
- 90-day warranty, full code and IP transfer
What New York Actually Runs On — and Where the Software Breaks
New York is the densest concentration of finance, media, advertising and real estate on the planet, with a startup scene layered on top of all three. That combination creates a distinctive software profile: regulated data, brutal deadlines, and buyers who have already tried every SaaS tool on the market. Here is where custom software development companies in New York typically get called.
Fintech and financial services
Finance is the city's centre of gravity, and software follows the money. Most of the work we see is not building a new exchange — it is the layer around the regulated core:
- Client onboarding and KYC workflows, where documents, checks and approvals need an audit trail that survives scrutiny.
- Portfolio, reporting and reconciliation dashboards that pull from custodians, ledgers and market data feeds.
- Payments and billing systems built on Stripe or a banking partner API, with idempotency and reconciliation done properly.
- Risk, exception and alerting tools that surface the problem before a client or a regulator does.
Our fintech software development guide goes into the architecture decisions in more depth.
Compliance-heavy data handling
This is the thread running through half of New York. It is not just finance — health data, legal data, employee data and customer PII all carry obligations. We build the engineering controls: encryption at rest and in transit, role-based and least-privilege access, immutable audit logs, retention and deletion workflows, secrets management, and separation of production data from everything else. We do not sell compliance certificates. We build systems your compliance team can actually defend, and we produce the evidence trail an auditor asks for. If you are heading for a SOC 2 audit, our post on SOC 2 compliance for SaaS startups covers what engineering has to get right.
Media, publishing and advertising
New York remains a capital of media and advertising, and the software problems there are about volume and velocity of content. Typical builds: editorial and content workflow systems with proper review and approval, rights and licensing tracking, asset management with metadata and search that actually works, campaign and reporting dashboards that consolidate a dozen ad platforms into one number a client will believe, and custom CMS layers where WordPress has hit its ceiling.
Proptech and real estate
New York real estate runs on data that is scattered, messy and valuable. We build leasing and tenant portals, deal and pipeline management for brokerages, building operations and maintenance tools, document-heavy workflows for closings, and analytics layers that merge listing, market and internal data. We wrote about the AI side of this in AI for real estate and proptech.
Startups and SaaS
The NYC startup scene is dense and impatient. For founders, the useful question is not "what could we build" but "what is the smallest thing that proves this works". We build MVPs in 6 to 10 weeks: authentication, the one core workflow, billing, an admin view, and the analytics you need to learn something real. Our write-up on building a SaaS MVP in 8 weeks explains how we keep scope honest.
Fintech & Finance
Onboarding and KYC flows, reporting, reconciliation, payments and risk tooling.
Media & Publishing
Editorial workflow, rights tracking, asset management, custom CMS layers.
Advertising
Cross-platform campaign reporting, client portals, creative approval workflows.
Proptech
Leasing and tenant portals, deal pipelines, building ops, closing workflows.
Startups & SaaS
MVPs, multi-tenant platforms, subscription billing, product analytics.
Legal & Professional
Document-heavy workflows, matter management, client portals, secure file exchange.
What Custom Software Development Involves
Custom software is built for one company. Off-the-shelf software is built for a market. Everything else follows from that.
New York businesses tend to have bought a lot of software already. The question is rarely "do we need software" — it is "why does the software we bought not do the thing that makes us money". That gap is where a custom build earns its keep.
- Discovery. We map the real workflow with the people who run it — including the spreadsheets they will not admit to. Output: a written scope, not a handshake.
- Architecture. Data model, integrations, security boundaries and access rules, decided before code is written. In regulated work this stage is the whole ballgame.
- Build. Two-week sprints, working demo at the end of each. Priorities can change between sprints.
- Integration and testing. Your custodian, your ad platforms, your CRM, your ledger. Most project risk lives here, so we hit it early rather than in week ten.
- Handover. Your cloud account, your repository, your documentation — plus a 90-day warranty on defects.
The full method is on our custom software development page.
The SaaS Sprawl Problem
New York teams are rarely short of tools. They are short of a system. Twelve subscriptions, four of which nearly do the job, and an operations person quietly holding it all together with exports and a Google Sheet.
Twelve tools and a spreadsheet
- Client data lives in four systems and agrees in none of them
- Reporting is a manual export-and-merge job every month
- Compliance evidence has to be reassembled by hand for each audit
- Per-seat costs climb every time you hire
- The workflow that differentiates you is the one no vendor supports
- Engineering time goes on gluing tools together, not building product
With a system built for your business
- One data model, fed by integrations, that every report reads from
- Reporting is a page, not a monthly project
- Audit logs and access controls are generated as you work
- You own the code — headcount does not raise the licence bill
- Your differentiating workflow is the thing the software is built around
- Your engineers work on the product, not the plumbing
Our Services for New York Clients
Custom Software Platforms
Internal systems, client portals, multi-tenant platforms and operational tooling built around your workflow. See custom software development.
AI & Machine Learning
Document extraction for onboarding and closings, semantic search across content archives, summarisation for editorial and research teams, scoring and forecasting models where your data supports one.
Web & Mobile Applications
Customer-facing products, tenant and investor portals, mobile apps for field and sales teams. More on our web development page.
Integrations & APIs
Stripe, Salesforce, HubSpot, ad platforms, custodial and market-data feeds, MLS and listing sources. Built with retries, idempotency and reconciliation so money and records never go missing.
Cloud & Security Engineering
Deployment in your AWS, Azure or GCP account, US regions where required. Encryption, least-privilege IAM, audit logging, CI/CD and infrastructure as code.
SaaS & MVP Development
A first release in 6–10 weeks: core workflow, auth, billing, admin and analytics. Small on purpose, so you learn from real users before spending the rest of the round.
Custom Software vs Off-the-Shelf — the Honest Version
Buying is often the right answer. If a product fits your process, buy it and spend your money elsewhere — we will say so on the first call. Custom earns its place when the process is the product.
| Factor | Custom Software | Off-the-Shelf SaaS |
|---|---|---|
| Fit to your workflow | ✓ Built around it | ~ You bend to the product |
| Speed to first value | 6–10 weeks to a working release | ✓ Immediate if it fits |
| Data control | ✓ Your cloud, your rules | ~ Vendor's terms and region |
| Compliance evidence | ✓ Built to your obligations | ~ Whatever the vendor exposes |
| Cost as you grow | Build once, then hosting | ✗ Per-seat, rising with headcount |
| Ownership | ✓ Code and IP are yours | ✗ You rent access |
| Best for | Your differentiating workflow | Commodity functions — email, payroll, helpdesk |
How We Work With New York Clients From London
Let us be direct: we do not have an office in New York. SpiderHunts is headquartered in London, and we work with US clients remotely. We have done so since 2015, and we think the transatlantic setup is genuinely good for New York clients rather than something to apologise for.
New York is on Eastern Time — five hours behind London, the narrowest gap between any major US and European business centre.
- Core overlap: roughly 9:00 am–1:00 pm ET. That is 2:00–6:00 pm London. All standups, demos, reviews and decisions live in that window.
- Our morning is your night. Work moves while you sleep, so Monday's blocker is often cleared before Tuesday's standup.
- Demo every two weeks. Working software, in your morning, on a call you can invite your stakeholders to.
- Direct access to engineers. A shared Slack or Teams channel with named senior engineers — no account manager in the middle.
- Transparent pricing. A fixed price against an agreed scope, or a clear rate card for a rolling team. Change requests are quoted before they are built.
- 90-day warranty. Defects in what we built are fixed free for 90 days after launch.
Our only office
London, UK — 182-184 High Street N, London E6 2JA. It is on every contract, and there is no NYC branch.
Your data stays yours
We deploy into your cloud account, in US regions where your policy or clients require it.
Across the US
New York is one of several US markets we serve. Our United States page covers the wider picture.
Verify us first
Read our case studies and our Clutch and Trustpilot profiles before you commit a dollar.
From First Call to Launch
Free 30-Minute Call
Describe the problem. We ask awkward questions and tell you honestly if buying beats building.
Discovery & Fixed Scope
Workflow mapping, architecture, data and security model, milestones and a fixed price — in writing.
Two-Week Sprints
A live demo every fortnight in your Eastern Time morning. Reprioritise between sprints as you learn.
Launch & Warranty
Deploy to your cloud, hand over code, docs and infrastructure, then 90 days of warranty cover.
Why New York Companies Hire SpiderHunts
There is no shortage of custom software development companies in New York with a Flatiron address and a waiting list. Here is the honest argument for a remote partner instead.
- Senior engineers on your calls. The people you talk to are the people writing the code — not a sales team who hand you to juniors after signing.
- Founded 2015, 1,000+ clients. We have built this class of system enough times to know where projects go wrong, which is usually integrations and access control.
- Independently reviewed. Public, verified profiles on Clutch and Trustpilot. Read those before you read this page again.
- Written case studies. Our case studies show the architecture and the trade-offs, not just a logo wall.
- You own everything. Code, IP, cloud, documentation. If you replace us, the software keeps running.
- We will tell you not to build. If an existing product solves it, that is the advice you will get on the first call.
New York Custom Software FAQs
Starting with the question most agency pages quietly skip.
Do you have an office in New York?
No. SpiderHunts Technologies is headquartered in London, UK, at 182-184 High Street N, London E6 2JA, and that is our only office. We are a remote-first custom software development company that works with New York clients, and we would rather say so plainly than list a coworking desk in Manhattan and call it a headquarters. Discovery, sprint demos, architecture reviews and support all happen over video and shared tooling, in your Eastern Time working hours. We have delivered for US clients this way since 2015.
Can you handle fintech and other compliance-heavy data?
Yes, and we are precise about what that means. We build the engineering controls that compliance-heavy systems need: encryption in transit and at rest, least-privilege and role-based access, immutable audit logging, data-retention and deletion workflows, secrets management, and clear separation between production and non-production data. We are software engineers, not auditors or a law firm. Your compliance, legal or risk team defines the obligations; we build systems that enforce them and produce the evidence trail an auditor will ask for.
What is the time-zone overlap between London and New York?
New York runs on Eastern Time, five hours behind London. That is the friendliest transatlantic gap there is. Our core overlap runs roughly 9:00 am to 1:00 pm ET, which is 2:00 pm to 6:00 pm in London. Standups, demos, design reviews and decisions all sit inside that window. Because our day starts before yours, work handed over in your afternoon is often waiting for you the next morning.
Can you build a SaaS MVP for a New York startup?
Yes. A focused MVP — authentication, the core workflow, billing, an admin view and the analytics you need to learn from launch — is typically a 6 to 10 week build. We deliberately keep the first release small so you get real user feedback before you spend the rest of your runway. We would rather ship one workflow that works than five that half-work, and we will push back if your scope looks like it is trying to be version three on day one.
What technologies do you build with?
Typically React or Next.js with TypeScript on the front end, Python (FastAPI or Django) or Node.js on the back end, and PostgreSQL for data — deployed on AWS, Azure or GCP with Docker, infrastructure as code and CI/CD. For AI work we integrate large language models for extraction, search and summarisation, and build custom machine learning models where the data actually supports one. We pick the stack for your problem, not for our convenience, and we will tell you when the boring option is the right one.
What happens after launch?
You get a 90-day warranty on what we built. Defects in our code are fixed at no charge during that period. You also get the source code, the documentation, the infrastructure definitions and full deployment access, deployed in your own cloud account — so your team, or any other engineering firm, can pick it up. Many clients keep us on for ongoing feature work, but that is a choice, not a dependency we engineer into the handover.
How do we get started, and what does the first month look like?
Start with a free 30-minute call. If it is a fit, we run a short discovery: we map the workflow, the data and the integrations with the people who actually use the system, then write a scope document with architecture, milestones and a fixed price. Nothing is billed as a surprise. Once you approve the scope, sprint one starts, and you see working software at the end of week two. If you want to see how we have handled comparable projects, read our published case studies first.
Let's Scope Your New York Build
Book a free 30-minute call. Bring the workflow your current stack cannot handle. We will tell you what it takes to build it properly — or whether you should just buy something instead.