// US-based SQL developers
Free project plan & cost estimate in 48 hours.
Senior SQL developers, based in the US, working your hours
Database design, query tuning, reporting, and data migrations, built by US engineers who make slow reports fast and numbers trustworthy.
- Interview engineers before you pay anything
- 100% U.S.-based, working your hours
- No brief or spec needed to get started
First 5 Dev Hours Free
Project plan. Roadmap. Cost & ROI estimation.
Real engineers. Real conversations.
Talk to an engineer. Not a salesperson.
Free · No commitment · Project-focused call
Most teams interview matched engineers within a week
Not the right fit? We bring in a replacement
Get your free project plan
Three quick steps. No brief needed.
Free · No commitment · Reply within one business day
// teams we've worked with
“NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag.”
Sound familiar?
- Reports take minutes to load, or time out entirely.
- Nobody trusts the numbers because every team's query says something different.
- A database migration keeps getting pushed back.
- You need someone senior enough to make decisions, not just close tickets.
What our SQL engineers build
Query tuning
Slow queries and reports found and fixed across SQL Server, Postgres, MySQL, and Oracle.
Data modeling & migrations
Clean schemas and safe moves between databases or to the cloud.
Reporting
Stored procedures, views, and warehouse models that feed your dashboards.
How it works
- 01
Pick a time
Book a 30-minute project call directly in our calendar.
- 02
Talk through the problem
Tell us what needs building, what's stuck and what success looks like. No spec needed.
- 03
Your plan in 48 hours
Get your project plan, roadmap, cost and ROI estimates. The plan is yours to keep.
- 04
First 5 dev hours free
Agree the scope with our team. Decide whether to continue before any paid work begins.
Common questions
Will this turn into a sales pitch?
No. The call is about your project: what needs building, what's stuck, and whether we have the right engineers. If we're not a fit, we'll say so.
What do I get for free?
A project plan, roadmap, cost estimate and ROI estimate within 48 hours of your project call. Your first 5 development hours are free, too. We agree the scope and any paid work with you before proceeding.
Do I need a spec or brief?
No. Tell us the problem in plain words and we'll help shape the scope with you.
Are the engineers really in the U.S.?
Yes. Every engineer lives and works in the United States. No offshore hand-offs, and that's in the contract.
What our clients say
"NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag."
"Their R&D tax credit workflow platform paid for itself in the first filing season."
"AI-native from day one. Our IRS transcript pipeline runs 24/7 without a human in the loop."
"Property tax appeals used to take weeks. Their comp analysis tooling turned it into hours."
"The AI intake agent handles our tier-1 patient calls with a hand-off cleaner than our old call center."
"POS, inventory, ordering — all unified. We finally have one source of truth across every location."
"The procurement platform paid for itself in the first quarter of use."
"They shipped our matching engine in 6 weeks. Our old team would've taken 6 months."
"Enterprise-grade delivery without the enterprise-agency price tag."
"Their team plugged into our sprint on day one. Zero ramp time."
"NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag."
"Their R&D tax credit workflow platform paid for itself in the first filing season."
"AI-native from day one. Our IRS transcript pipeline runs 24/7 without a human in the loop."
"Property tax appeals used to take weeks. Their comp analysis tooling turned it into hours."
"The AI intake agent handles our tier-1 patient calls with a hand-off cleaner than our old call center."
"POS, inventory, ordering — all unified. We finally have one source of truth across every location."
"The procurement platform paid for itself in the first quarter of use."
"They shipped our matching engine in 6 weeks. Our old team would've taken 6 months."
"Enterprise-grade delivery without the enterprise-agency price tag."
"Their team plugged into our sprint on day one. Zero ramp time."
Hire US-based SQL developers from NextGen Coding Company for relational schema design, slow-query troubleshooting, database migrations, and reporting. Define the work around your actual engine: PostgreSQL 16, SQL Server 2022, and MySQL 8.0 differ in indexing, execution plans, and concurrency behavior. A useful starting brief includes slow statements, table sizes, workload patterns, and the operational limits on production changes.
A query rewrite alone may not resolve stale statistics, lock contention, or an unsuitable access pattern. Plan investigations with PostgreSQL EXPLAIN, SQL Server Query Store, or MySQL Performance Schema rather than treating every database alike. Our senior engineers work your hours and attend your standups. NDA and full IP assignment are signed before code access; schedule a 15-minute call to outline your database priorities.
Frequently asked questions
- What should I look for when hiring a SQL developer?
- Look for depth in your database engine, not just familiarity with SELECT syntax. Ask candidates to interpret an execution plan, explain transaction isolation, and propose a migration for a large table. Strong interview tasks include diagnosing duplicate joins, handling NULL correctly, and choosing indexes while accounting for write overhead and maintenance.
- How does a SQL developer diagnose slow queries?
- Begin with representative statements, parameter values, execution plans, and workload measurements. In PostgreSQL, EXPLAIN ANALYZE executes the statement, so use it cautiously, especially for writes. Investigate row-estimate errors, scans, sorts, lock waits, and index usage. Compare changes under realistic load; a faster isolated query can still harm concurrent transactions or increase write costs.
- Can a SQL developer migrate databases without downtime?
- Downtime requirements depend on the engine, schema change, data volume, and replication options. An expand-and-contract migration can separate additive schema changes from application cutover and cleanup. Tools such as Flyway or Liquibase track migration history, but they do not make every operation nonblocking. Require rollback planning, data validation, and a rehearsal against production-like volumes.
- How are PostgreSQL, SQL Server, and MySQL development different?
- The engines share relational concepts but differ in SQL dialects, optimizer behavior, indexing features, and administrative tooling. PostgreSQL work may involve partial indexes and JSONB; SQL Server projects often use T-SQL and Query Store; MySQL troubleshooting may center on InnoDB locking and Performance Schema. Hiring should match the engine and version already running your workload.
- How quickly can I interview a US-based SQL developer?
- Most teams interview matched engineers within a week of the first call. Bring your engine version, deployment model, slow-query examples, and migration backlog to the conversation. Every engineer lives and works in the US, with no offshore subcontracting. If the fit is not right, we bring in a replacement with a proper hand-over.
- Are your developers really based in the US?
- Yes. Every engineer lives and works in the United States. No offshore subcontracting and no hand-offs to another team. That's written into the contract.
- How fast can someone start?
- Most teams interview matched engineers within a week of the first call. Start dates depend on your interview process.
Related reading
- How to hire a software developer
What to check before you sign.
- Hiring test for senior engineers
How to vet senior talent fast.
- Senior engineer salary guide 2026
What the market pays.
- Onshore vs offshore vs nearshore
The honest tradeoffs.
- Forward deployed engineers
Need an owner, not just capacity?
- Resource library
Every guide and benchmark we publish.
Start your project request
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