Back to Home
// resources / hire senior .net developer

Hire A Senior .NET Developer — NYC, Onshore

For engineering leaders in NYC financial services and enterprise IT hiring .NET talent for modernization, backend, or line-of-business work: NextGen embeds vetted senior .NET developers with your team. Every engineer is US-based, W-2 or long-term US contract, and has 10+ years of production .NET across both legacy Framework and modern .NET 8/9. Typical time from signature to first shipped ticket: 10–14 business days.

Senior .NET developers in NYC cost $135-$180/hr embedded through NextGen, or roughly $180K-$230K base direct. Our engineers average 10+ years across legacy .NET Framework and modern .NET 8/9, which is what most financial-services modernization work actually requires.

// what they work on

What our senior .net developers typically work on

Legacy system modernization

Incremental migration of .NET Framework 4.x, WCF, WebForms, and classic ASP.NET MVC to .NET 8/9 minimal APIs and modern C#. Strangler-fig migrations against production workloads, contract-first API replacements, and SQL Server schema modernization without cutover downtime. Delivered with regression suites and a written rollback plan for each cutover milestone.

Internal enterprise tools

Line-of-business apps for ops, finance, compliance, and back-office teams. Blazor Server or React-on-.NET-API front ends, EF Core against SQL Server or PostgreSQL, background job processing with Hangfire or Azure Functions, SSO against Azure AD/Entra. The unglamorous internal software that runs partnerships and holdcos every day.

Financial services backend systems

Order-management adjacencies, reconciliation engines, books-and-records feeds (SEC 17a-4-aware retention), FIX-protocol integrations, and pricing/valuation services. Transactional correctness held to actual accounting standards, audit trails that survive regulator review, and performance budgets stated in microseconds where the workload calls for it.

// compared plainly

Hiring Through NextGen vs Posting on a Job Board

The math on posting a Senior .NET Developer role directly on LinkedIn, Indeed, or Wellfound: 8–14 weeks of calendar time from posting to first productive week, roughly 120–200 inbound applications to filter, 15–25 first-round interviews for your engineering managers to run, and — for NYC financial and professional services firms — a 30–50% offer-decline rate against competing bulge-bracket, fintech, and Big Tech packages.

The math with NextGen: 2–3 candidate profiles delivered within 5 business days, you interview only pre-vetted engineers with signed availability, and the first productive week starts 10–14 days after signature. Zero recruiting overhead on your side, no job-description writing, no sourcing, no first-round screening burden. If the engagement is going well at month three, contract-to-hire converts to full-time for a fixed conversion fee.

Post on a job board when the role is permanent, budget for it is set for FY, and you have an in-house recruiter with capacity. Use NextGen when the work needs to start this quarter, the scope is well-defined but the permanent-headcount decision isn't, or your engineering managers cannot afford 40–60 hours of interview loop time this month.

// proof

What the numbers actually look like

Time to start
10–14 days

From signed engagement letter to first shipped ticket in your codebase.

Engagement length
6–14 months

Median across NYC financial and professional services firms. Renewable quarterly.

Rate range
$140–$225/hr

Senior through staff/principal, all-in, no recruiting markup.

// faq

Frequently asked questions

How are .NET developers vetted?
Four gates: (1) 60-minute technical screen on modern .NET (C# 12, .NET 8/9, async/await internals, EF Core, dependency injection) plus one legacy topic (.NET Framework interop, WCF or ASMX migration, SQL Server internals); (2) live coding round on a real API design or data-access problem; (3) system-design round on a distributed enterprise system (auth, transactions, event flow, background jobs); (4) two reference calls with engineering managers from the last 24 months. Under 8% clear all four.
Do you offer contract-to-hire?
Yes. Three-month embedded contract, then a fixed 20%-of-annualized-base conversion fee if the engineer accepts a full-time offer inside 12 months. No conversion fee after month twelve. Engineers are never restricted from taking direct offers — the fee reflects sourcing and vetting cost.
What's the rate structure?
Senior .NET developers: $135–$180/hr. Staff-level with financial-services or FIX-protocol background: $170–$220/hr. Monthly retainers at 10–15% discount for 6+ month commitments. All-in — no recruiting fee, no benefits markup, no on-site per-diem for NYC office days.
Are engineers actually onshore?
Yes. Every engineer is US-based, in Eastern or Central time, and W-2 with NextGen or a long-term US contractor with signed NDA and IP assignment. .NET talent in particular skews toward NYC, NJ, Charlotte, Chicago, and Boston — cities where enterprise financial services has historically hired heavily. No offshore subcontracting, no rotating pools. Written into the engagement contract.
What seniority level should we expect?
The typical placed engineer has 10–15 years of .NET experience — usually a mix of legacy Framework (4.6.x, WCF, WebForms/MVC) and modern .NET 6/7/8/9. Common prior contexts: bulge-bracket banks, insurance carriers, exchange and clearinghouse platforms, and regulated healthcare payers. Deep judgment on migrations, transactional correctness, and Windows-shop operational realities — not just C# syntax.
// let's build something

Start your project request

Tell us what you're building — engineering capacity, AI, QA, cloud, or a fixed-scope software engagement. Our NYC team responds within one business day.

// what to expect
  • Response within 1 business day
  • 30-minute discovery conversation
  • Recommended engagement model & pricing
  • NYC-focused — in-person available
Start Project Request

Inbound sales only. All form information is encrypted in transit.