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Api Programmer Jobs in Washington (NOW HIRING)

GDIT

Backend API Developer

Arlington, VA · On-site

$119K - $161K/yr

Yes Position Summary The Backend API Developer builds and operates the service layer behind an operator application in a cyber command center supporting national cyber defense across Critical ...

System One

Java API Developer - 100% remote

Merrifield, VA · Remote

$52.25 - $67.50/hr

Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote - offsite Hours: 40 hours a week Security Clearance: None but full background check ...

System One

Java API Developer - 100% remote

Merrifield, VA · Remote

$52.25 - $67.50/hr

Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote - offsite Hours: 40 hours a week Security Clearance: None but full background check ...

System One

Java API Developer - 100% remote

Merrifield, VA · Remote

$52.25 - $67.50/hr

Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote - offsite Hours: 40 hours a week Security Clearance: None but full background check ...

System One

Java API Developer - 100% remote

Merrifield, VA · Remote

$52.25 - $67.50/hr

Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote - offsite Hours: 40 hours a week Security Clearance: None but full background check ...

System One

Java API Developer - 100% remote

Merrifield, VA · Remote

$52.25 - $67.50/hr

Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote - offsite Hours: 40 hours a week Security Clearance: None but full background check ...

System One

Java API Developer - 100% remote

Merrifield, VA · Remote

$52.25 - $67.50/hr

Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote - offsite Hours: 40 hours a week Security Clearance: None but full background check ...

System One

Java API Developer - 100% remote

Merrifield, VA · Remote

$52.25 - $67.50/hr

Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote - offsite Hours: 40 hours a week Security Clearance: None but full background check ...

Staffingine LLC

API Automation Engineer

Bethesda, MD · On-site

Job Title: API Automation Engineer using Ready API Job Location: Bethesda, MD Job Type: Contract * 10+ years of experience in Quality Assurance (QA) and automation testing. * Strong hands-on ...

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Api Programmer information

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How much do api programmer jobs pay per hour?

As of Sep 2, 2026, the average hourly pay for api programmer in Washington is $44.78, according to ZipRecruiter salary data. Most workers in this role earn between $29.13 and $58.27 per hour, depending on experience, location, and employer.

What is an API programmer?

API programmers are software developers who specialize in designing, building, and maintaining Application Programming Interfaces (APIs). They enable different software applications to communicate with each other by creating standardized protocols and data formats. API programmers work with various programming languages and tools to ensure that APIs are secure, efficient, and easy to use for other developers. Their role is essential in modern software development, as APIs power integrations between web, mobile, and cloud-based services.

What are the key skills and qualifications needed to thrive as an API programmer?

To thrive as an API Programmer, you need strong programming skills in languages like JavaScript, Python, or Java, and a solid understanding of RESTful and SOAP API architectures. Familiarity with API development tools (such as Postman or Swagger), version control systems like Git, and knowledge of authentication protocols (OAuth, JWT) are typically required. Excellent problem-solving, attention to detail, and effective communication skills help you collaborate with cross-functional teams and address integration challenges. These skills ensure robust, secure, and scalable API solutions that meet business and user needs.

How does an API programmer typically collaborate with other teams during a project lifecycle?

API Programmers work closely with frontend developers, backend engineers, and QA testers to ensure seamless integration and functionality of APIs. They often participate in cross-functional meetings to gather requirements, clarify endpoints, and address integration challenges. Effective communication and documentation are crucial, as API Programmers must ensure that their APIs are accessible and understandable to internal teams and external partners. Collaboration tools like Swagger or Postman are commonly used to facilitate this process.

Are API programmers in demand?

API programmers are in high demand as organizations increasingly rely on APIs to connect systems and enable integrations. Skills in REST, SOAP, and API management tools are valuable, and demand is expected to grow with the expansion of cloud services and digital transformation initiatives.

What cities in Washington are hiring for Api Programmer jobs?

Cities in Washington with the most Api Programmer job openings:

Api Programmer jobs near you

Backend API Developer

GDIT

Arlington, VA • On-site

$119K - $161K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 12 days ago

General Dynamics Information Technology rating

7.8

Company rating: 7.8 out of 10

Based on 63 frontline employees who took The Breakroom Quiz

88th of 226 rated it services

Job description

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

None

Clearance Level Must Be Able to Obtain:

None

Public Trust/Other Required:

NACI (T1)

Job Family:

Data Science and Data Engineering

Job Qualifications:

Skills:

Back-End Development, Building Operations, Cloud Delivery, Design Development, Network Gateway

Certifications:

None

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

Position Summary
The Backend API Developer builds and operates the service layer behind an operator application in a cyber command center supporting national cyber defense across Critical Infrastructure and government partners. Responsibilities focus on lowlatency service delivery, correctness under load, and strict entitlement enforcement.

Key Responsibilities

Service Design & Development
Build and operate independently deployable services behind the application.
Maintain interface contracts, versioning, and backward compatibility.
Implement consistent request handling, validation, errors, authentication, and authorization.
Create automated tests for service behavior and contract compliance.

Upstream Integration & View State
Integrate with upstream services via REST and streaming interfaces.
Maintain accurate, consistent view state and ensure clients connecting midstream receive a complete picture.
Coordinate payload and interface changes with upstream service owners.

Real-Time Delivery
Deliver updates using server-sent events and WebSocket streams.
Manage connection lifecycle, authentication, backpressure, reconnection, and catchup.
Sustain large numbers of concurrent longlived connections without degradation.

Authorization & Content Filtering
Enforce role and attribute-based authorization serverside.
Implement content filtering so users receive only authorized data.
Test entitlement enforcement and maintain audit logs of all deliveries.

Event-Triggered Services
Build and operate event-triggered functions for routing, downstream actions, and notifications.
Integrate with managed messaging services.
Ensure triggered actions are idempotent, observable, and safely retried.

Performance, Reliability & Operations
Design and validate services for low-latency, high-throughput use.
Instrument services for monitoring, diagnosis, and production incident response.
Deploy through established pipelines into containerized environments.
Maintain required training and certifications; report certification status monthly.

Collaboration
Collaborate with front-end engineers on service contracts.
Work with platform teams on configuration, scaling, secrets, and deployment.
Participate in sprint planning, demos, and reviews.

Required Qualifications
Experience building and operating production service interfaces at scale.
Experience integrating with upstream services and maintaining derived state.
Knowledge of push/streaming delivery, connection lifecycle, and backpressure.
Experience with server-side authorization models.
Experience with containerized deployment and cloud environments.
Experience instrumenting services and supporting production incidents.
BS in computer science or engineering and 8+ years relevant experience (or equivalent).
Public Trust eligibility and U.S. citizenship.
On-site work in the Washington, D.C. metro area (not remote or hybrid).

Preferred Qualifications
Experience with streaming platforms (Kafka, MSK, Event Hubs).
Experience with API gateways or service meshes.
Experience with serverless functions (Lambda, Azure Functions).
Experience supporting latencysensitive operational systems.
Experience delivering software in regulated environments.
Current cloud developer/associate certification.


GDIT Is Your Place
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
Growth: AI-powered career tool that identifies career steps and learning opportunities
Support: An internal mobility team focused on helping you achieve your career goals
Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
Community: Award-winning culture of innovation and a military-friendly workplace
Own Your Opportunity
Explore a career in data science and engineering at GDIT and you'll find endless opportunities to grow alongside colleagues who share your determination for solving complex data challenges.

The likely salary range for this position is $119,000 - $161,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours:

40

Travel Required:

Less than 10%

Telecommuting Options:

Onsite

Work Location:

USA VA Arlington

Additional Work Locations:

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events at

gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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About General Dynamics Information Technology

Sourced by ZipRecruiter

GDIT is a global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense, and intelligence community. Its 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. The company operates across 50+ countries worldwide, offering leading capabilities in digital modernization, AI/ML, cloud, cyber, and application development.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Falls Church, VA, US

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