Application Development // Custom Web App Development
Best for firms commissioning custom software for internal or customer use

Custom software that works on day one and still works in year five.

Most agencies hand you a working app, take their fee, and disappear. The app starts breaking, and now nobody owns it. We build software like we'll be running it for years — because we usually are.

5+ years
Average production lifespan of apps we've built and continue to support
Developer building a web application
fig.01
Kitchener
Delivered locally across the Waterloo Tech Corridor. SOC 2 Type II & GDPR Sovereign Data Aligned.
3-Hour On-Site Dispatch
As a scaling SaaS startup, security questionnaires were holding back sales. Senator Networks built our entire DevSecOps security pipeline and got us SOC 2 ready in record time.
Aiden Novak, Hyperion Analytics, Downtown Kitchener
Sound familiar?

Why custom builds usually disappoint.

pain 01

Built fast, broke faster.

Agency rushed to ship. No tests, no monitoring, no documentation. Six months later, can't make a change without breaking three things.

pain 02

The original developer disappeared.

Freelancer or offshore team. Now you're stuck with code only they understood.

pain 03

Scope drift turned into budget chaos.

Started at $80k, ended at $240k. Most of the overage was change requests nobody documented.

pain 04

Looked great in demos. Hated in production.

Slow, awkward to use, doesn't fit how your team actually works.

What you get

How we build.

  • 01

    Senior-led team

    Senior engineer + product designer + tech lead on every project. No junior staffing on critical code.

  • 02

    2-week sprints

    Working software every two weeks. You see and use it. Course-corrects before things drift.

  • 03

    Automated tests

    Real test coverage from day one. You can change the code in year three without fear.

  • 04

    CI/CD pipeline

    Every commit builds, tests, and deploys to staging automatically. Releases are routine, not events.

  • 05

    Monitoring + alerting

    Errors, performance, uptime tracked from launch. We see problems before users do.

  • 06

    Ongoing ownership

    Most projects move from build into maintained operation. Same team. Same understanding. No handoff cliff.

Getting started

How a project flows.

  1. Weeks 1–2

    Discovery + design

    Joint sessions with stakeholders. User flows, data model, architecture sketched. Cost estimate confirmed.

  2. Weeks 3–4

    Foundation sprint

    Repository, CI/CD pipeline, monitoring, auth, base framework. Boring infrastructure done first.

  3. Weeks 5–onward

    Feature sprints

    2-week cycles. Each sprint ends with working software demoed to stakeholders. Course corrections welcomed.

  4. Pre-launch

    Beta + hardening

    Friendly users hammer the app. Edge cases caught. Performance tuned.

  5. Launch + after

    Production + support

    Go-live with monitoring. Bug fixes and small enhancements continue under maintenance SLA.

Compare

Three ways to build custom software.

Offshore agencyLocal agencySenator
Day rate (effective)$200–$400$1,200–$2,500$1,400–$2,200
Senior involvementPitching onlyOn critical projectsEvery project
Long-term supportRareSometimesStandard
Knowledge transferDocumentation theaterMixedWe stay on; no handoff cliff
Tech stack choiceWhat they knowPer projectMatch to your team + future maintainability
Time-zone overlapLimitedFullFull
Built on

Stacks we use most.

Frontend
ReactNext.jsTanStack StartVueTailwind CSSTypeScript
Backend
Node.js (NestJS, Fastify)Python (FastAPI, Django)GoJava (Spring)PostgreSQLRedis
Cloud
AWSAzureCloudflare WorkersVercelFly.io
Tooling
GitHub ActionsDatadogSentryPostHog (product analytics)
By the numbers

How our builds perform.

5+
yr
Average production lifespan

Of apps we've built. Long-tail support is the norm.

<5
%
Post-launch defect rate

Bugs found in production in the first 30 days as a share of features delivered.

99.95
%
Production uptime

Across apps under our maintenance, measured 12-month rolling.

2 wk
Sprint cadence

Working software demoed every two weeks. No 6-month black boxes.

From a client
We'd been burned twice by agencies. Senator was honest about timelines and scope from week one. Shipped on time, on budget. Then they kept maintaining it. Four years later, still running, still being improved. Best $180k we spent.
Head of Operations · Specialty financial services · Bay Street, Toronto
Who needs this

Who needs this.

  • Firms whose business is moving faster than off-the-shelf software can.
  • Anyone with a workflow nobody else has built a tool for.
  • Firms that have a failed previous custom build and need a do-over.
  • Mid-market companies needing a customer-facing portal that reflects their brand.
FAQ
Q01

What size projects do you take?

Most are $80k–$600k for v1. Smaller proofs of concept on request. Larger multi-year platforms also doable.

Q02

Fixed price or time and materials?

Both. Fixed-price for clearly-scoped work. T&M for evolving products. We're transparent about which fits which.

Q03

Will we own the code?

Yes. You own the IP fully. We sign IP-assignment as part of the contract.

Q04

What about AI features?

Common ask. We build with LLM integration (OpenAI, Anthropic, Azure AI) where it genuinely improves the product. We don't bolt it on for marketing.

Next step

Free 60-minute scoping session.

Tell us what you're trying to build. We'll sketch an approach, a rough timeline, and a cost band — in writing, after the call.