API Developer

API Developer

Location: Merrifield, VA, US

Job ID: ATR 17967

Job Description

Job Title: API Developer

Job Location: Remote – US Based

Compensation: $110,000 to $120,000 Salaried Employee (NO Corp-to-Corp

Candidates Considered)

Eligibility/Clearance: US Citizenship Required – This opportunity

supports a government contract

Job Description:

We are looking for a US-resident developer who will design, build, and

maintain theAPI layerthat connects our internalOracle 19c databaseto

our modern (Angular) user interface. The developer we are looking for

should be able to whiteboard an application, make trade off decisions,

and produce a design that other developers can implement. This isn't a

"just write code" role. This is not a role where you'll wire up a few

endpoints and call it a day. We are looking for multiple years of

professional development experience inC#/.NET. We need depth with our

tech stack:.NET 8, EF Core, Oracle 19c. If you are just familiar with

these, this isn’t the right role – yet.

Responsibilities (include but are not limited to):

What You'll Do:

You'll work closely with our architecture and payroll engineering teams

to expand our API surface, modernize legacy integrations, and support

new product capabilities including our AI-powered Answer and

Intelligence Engines.

1. Design & Build Integration APIs

2. Architect for Performance, Security, and Scale

3. Design Database Schemas.

4. Maintain & Modernize Existing Interfaces.

5. Enforce Security & Compliance Standards.

6. Conduct Thorough Code Reviews.

7. Troubleshoot Complex Technical Issues

8. Collaborate Across Disciplines

Requirements:

These are hard requirements. If you don't meet them, this isn't the

right role – yet.

• C#/.NET: You will contribute to the development of a .NET 8 Web API

using industry

standard design principles. You will be expected to design and build

well-defined,

testable API contracts and explain why you made the choices you did. We

are looking

for 5+ years of professional development experience in C#/.NET.

• Oracle 19c database experience: You will understand relational design

at depth.

We design and maintain database schemas in Oracle 19c. For our

applications, you

will write performant queries, stored procedures, and data access layers

using Entity

Framework. You must be proficient in code-first and database-first

approaches,

migration management, performance tuning of generated queries, and

knowing

when EF is the wrong tool for the job.

• Architecture and Design — you can whiteboard an application, make

trade-off

decisions, and produce a design that other developers can implement.

This isn't a

"just write code" role.

• Conduct Thorough Code Reviews: As part of our development team, you

will review

pull requests with rigor and care. You're not scanning for syntax;

you're evaluating

architectural decisions, security implications, error handling,

performance

characteristics, and maintainability. Your reviews will improve the

team, not just the

code.

• Troubleshoot Complex Technical Issues: Diagnose and resolve

application issues

that span application code, API layers, database performance,

integration failures,

and infrastructure. You are responsible for the code you write.

• Collaborate Across Disciplines: Work daily with Product Managers,

Business

Analysts, QA Engineers, front-end and fellow back-end developers. You'll

participate

in sprint planning, design reviews, and estimation. You don't need to

know our

system architecture on Day 1, but you need to be curious enough to learn

it, and

patient enough to communicate clearly with our domain experts.

• Background investigation: must reside in the US and be willing to

submit and able

to obtain a Background Evaluation/Investigation.

Education:

-Bachelors Degree

ATR is an Equal Opportunity Employer (EOE) who will provide equal

employment opportunity to employees and applicants for employment

without regard to race, ethnicity, religion, color, sex, pregnancy,

national origin, age, veteran status, ancestry, sexual orientation,

gender identity or expression, marital status, family structure, genetic

information, or mental or physical disability

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