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Senior Api Developer Jobs in Virginia (NOW HIRING)

Senior ServiceNow Developer

Mclean, VA · On-site

$55.50 - $76.25/hr

Senior ServiceNow Developer Location: McLean, VA / Plano, TX (100% Onsite) Job Type: Long-Term ... Experience with ATF, Selenium, UI Testing, API Testing, and REST/SOAP integrations * Strong ...

SR. PYTHON DEVELOPER

Reston, VA · On-site

$126K - $170K/yr

Job Title: SR. PYTHON DEVELOPER Location: Reston,VA Duration: 12+ Months Visa: USC, GC, H1B and EAD ... Proficient in API Integration. * Experience in Microservices architecture is helpful Agile Scrum

Python Developer

Reston, VA · On-site

$52.25 - $72/hr

Position Summary The Senior Python Developer will design, develop, test, and implement cloud native ... Experience implementing API versioning, request validation, and structured error handling

Sr CNO Developer

Stafford, VA · On-site

$54.25 - $71.75/hr

They are seeking a Sr CNO Developer to design, implement, and refine advanced cyber capabilities ... API interactions • Experience developing implants, payloads, or exploitation capabilities • ...

Senior Java Developer

Reston, VA · On-site

$59.50 - $76/hr

Senior Java Developer OR Fullstack Developer Location: Reston VA - In person interviews only ... Spring Boot/ Rest API's AWS (EC2, S3, IAM, SNS, SQS, fargate etc) Core Java, Java8/11/17 ...

SR. SERVICENOW DEVELOPER

Mclean, VA · On-site

$55 - $75.50/hr

W2 Senior Developer will be part of the Enterprise Risk Management Technologies Team and will be ... Build system integrations using Integration Hub and REST API. * Execute functional component ...

Senior SW Developer

Fairfax, VA · On-site

$55.75 - $73.50/hr

Senior SW Developer Category: Software Development/ Engineering Main location: United States ... API design patterns and microservice communication • Build a solid understanding of data ...

Senior Python Developer

Mclean, VA · On-site

$124K - $167K/yr

Senior Python Developer Location: 6 Months Duration: Mclean, VA 22102 Fully Onsite: M-F Must Have ... Strong experience building and consuming RESTful API web services . * Experience with data ...

Sr. Python Developer

Mclean, VA · On-site

$123K - $166K/yr

Strong Proficiency in Python programming language, including experience with frameworks such as Flask, Django, and Fast API. * Experience with RESTful APIs and microservices architecture, and an ...

Senior Software Developer

Herndon, VA · On-site +1

$56 - $74/hr

Senior Software Developer National Capital Region TS/SCI Polygraph | Hybrid (Remote with Occasional ... REST-style Web API platforms * Client-side development experience using Vue.js, JavaScript, Angular ...

Showing results 41-60

Senior Api Developer information

See Virginia salary details

$15

$61

$86

How much do senior api developer jobs pay per hour?

As of Aug 11, 2026, the average hourly pay for senior api developer in Virginia is $61.20, according to ZipRecruiter salary data. Most workers in this role earn between $51.97 and $68.65 per hour, depending on experience, location, and employer.

What is the difference between Senior Api Developer vs API Engineer?

AspectSenior API DeveloperAPI Engineer
Required CredentialsBachelor's in CS or related, experience in API developmentBachelor's or higher in CS, software engineering, or related field
Work EnvironmentSoftware development teams, tech companies, startupsDevelopment teams, cloud services, enterprise environments
Employer & Industry UsageTech firms, SaaS providers, e-commerceCloud providers, enterprise software, API platforms
Common Search & ComparisonOften compared for API design and development rolesFocuses on API infrastructure and deployment

While both roles involve working with APIs, a Senior API Developer primarily designs, develops, and maintains APIs, focusing on functionality and integration. An API Engineer often emphasizes the infrastructure, deployment, and scalability of APIs within larger systems. Understanding these distinctions helps employers and professionals choose the right role for their needs.

What is a senior API developer?

Senior API Developers are experienced software engineers who specialize in designing, building, and maintaining Application Programming Interfaces (APIs) that allow different software systems to communicate. They often lead technical projects, mentor junior developers, and ensure APIs are secure, scalable, and well-documented. Senior API Developers typically work with a variety of programming languages and frameworks, and collaborate closely with other teams to align API solutions with business goals.

What skills and qualifications are needed to thrive as a senior API developer?

To thrive as a Senior API Developer, you need advanced programming skills (often in languages such as Java, Python, or Node.js), deep understanding of API design principles, and experience with RESTful and/or GraphQL APIs, typically supported by a relevant degree or professional experience. Familiarity with API management tools (like Postman, Swagger, or Apigee), cloud platforms (such as AWS or Azure), and knowledge of authentication protocols (OAuth, JWT) are vital. Strong problem-solving abilities, effective communication, and leadership skills help in collaborating across teams and mentoring junior developers. These competencies ensure robust, scalable API solutions that meet business needs and integrate seamlessly with other systems.

Are senior API developers in demand?

Senior API developers are in high demand due to the increasing reliance on web services and integrations across industries. They are often required to have expertise in RESTful and GraphQL APIs, programming languages like Java or Python, and experience with cloud platforms, making their skills highly sought after in the job market.

How do senior API developers typically collaborate with product managers and frontend teams during the development process?

Senior API Developers play a key role in bridging backend systems with product and frontend teams. They work closely with product managers to interpret business requirements into technical specifications for APIs. Regular collaboration with frontend developers ensures that APIs are designed for usability, performance, and scalability, often involving code reviews, feedback sessions, and iterative testing. Effective communication and proactive problem-solving are essential to align API functionality with both business objectives and user experience.
What are the most commonly searched types of Api Developer jobs in Virginia? The most popular types of Api Developer jobs in Virginia are:
What are popular job titles related to Senior Api Developer jobs in Virginia? For Senior Api Developer jobs in Virginia, the most frequently searched job titles are:
What job categories do people searching Senior Api Developer jobs in Virginia look for? The top searched job categories for Senior Api Developer jobs in Virginia are:
What cities in Virginia are hiring for Senior Api Developer jobs? Cities in Virginia with the most Senior Api Developer job openings:
Infographic showing various Senior Api Developer job openings in Virginia as of August 2026, with employment types broken down into 82% Full Time, 4% Part Time, and 14% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $127,298 per year, or $61.2 per hour.

Test Automation Developer - ETL/API/Rules

CGI Inc.

Arlington, VA • On-site

Full-time

Retirement, PTO

Re-posted 14 days ago


CGI rating

7.1

Company rating: 7.1 out of 10

Based on 19 frontline employees who took The Breakroom Quiz

147th of 223 rated it services


Job description

Test Automation Developer - ETL/API/Rules
Category: Analytics and Emerging Digital Technologies
Main location: United States, Virginia, Arlington
Position ID:J0925-2112
Employment Type: Full Time
Position Description:
CGI Federal has an exciting opportunity for a Test Automation Developer - ETL/API/Rules within our Intel sector advancing the national security mission through cutting edge technology. You must have a passion for keeping pace with rapidly evolving technology advancements and leveraging your knowledge on a highly collaborative team to deliver state-of-the-art capabilities.
The Test Automation Developer - ETL/API/Rules is responsible for designing, developing, and maintaining automated test solutions to ensure the quality and integrity of data pipelines (ETL), application programming interfaces (APIs), and business rules engines. This role involves a blend of technical expertise in automation frameworks, data validation, and understanding complex system interactions.
CGI Federal is growing its high-performance team whose members share a passion for building high-quality, scalable, advanced IT solutions in a collaborative, fast-paced, outcome-driven mission.
This position is located in USA VA Arlington, however, a hybrid working model is acceptable in the area.
Your future duties and responsibilities:
• Design and Develop Automation Frameworks: Create and enhance robust automation frameworks for testing ETL processes, APIs, and business rules, leveraging tools and programming languages like Python, Java, SQL, Selenium, Postman, SoapUI, or custom scripting.
• ETL Testing:
o Develop and execute automated test scripts to validate data extraction, transformation, and loading processes.
o Ensure data integrity, accuracy, and completeness across various data sources and target systems.
o Perform data reconciliation and validate data mappings and transformations.
• API Testing:
o Design and implement automated tests for RESTful and SOAP APIs, covering functional, integration, performance, and security aspects.
o Validate API responses, error handling, and adherence to specifications.
• Business Rules Testing:
o Develop automated tests to verify the correct implementation and execution of complex business rules and logic within applications or rules engines.
o Ensure compliance with defined business requirements and expected outcomes.
• Test Case Development and Execution: Create, maintain, and execute comprehensive test cases, test scripts, and test plans for all areas of responsibility.
• Defect Management: Identify, document, track, and prioritize defects, collaborating with development teams for timely resolution and retesting.
• CI/CD Integration: Integrate automated tests into Continuous Integration/Continuous Delivery (CI/CD) pipelines to enable continuous testing and rapid feedback.
• Reporting and Analysis: Generate detailed test reports, analyze test results, and provide recommendations for process improvements and quality enhancements.
• Collaboration: Work closely with developers, product owners, business analysts, and other QA team members to understand requirements, define test strategies, and ensure quality deliverables.
Required qualifications to be successful in this role:
Journeyman:
• Education and/or Experience: Bachelor's degree and/or 2 to 5 years of experience
• Security Clearance: TS/SCI required with the ability to obtain a TS/SCI with Poly
• Strong experience in test automation development, including designing and implementing automation frameworks.
• Proficiency in programming languages such as Python, Java, or similar for test automation.
• Expertise in SQL for data validation, querying, and database testing.
• Experience with ETL testing methodologies and tools (e.g., Informatica, Talend, SSIS, or custom scripts).
• Hands-on experience with API testing tools (e.g., Postman, SoapUI, JMeter).
• Understanding of business rules engines and experience in testing complex rule sets.
• Familiarity with CI/CD tools and practices (e.g., Jenkins, Azure DevOps, GitHub Actions).
• Experience with version control systems (e.g., Git).
• Strong analytical, problem-solving, and communication skills.
Senior:
• Education and/or Experience: Bachelor's degree and/or 5 to 10 years of experience
• Security Clearance: TS/SCI required with the ability to obtain a TS/SCI with Poly
• Strong experience in test automation development, including designing and implementing automation frameworks.
• Proficiency in programming languages such as Python, Java, or similar for test automation.
• Expertise in SQL for data validation, querying, and database testing.
• Experience with ETL testing methodologies and tools (e.g., Informatica, Talend, SSIS, or custom scripts).
• Hands-on experience with API testing tools (e.g., Postman, SoapUI, JMeter).
• Understanding of business rules engines and experience in testing complex rule sets.
• Familiarity with CI/CD tools and practices (e.g., Jenkins, Azure DevOps, GitHub Actions).
• Experience with version control systems (e.g., Git).
• Strong analytical, problem-solving, and communication skills.
SME:
• Education and/or Experience: Bachelor's degree and/or 10+ years of experience
• Security Clearance: TS/SCI required with the ability to obtain a TS/SCI with Poly
• Strong experience in test automation development, including designing and implementing automation frameworks.
• Proficiency in programming languages such as Python, Java, or similar for test automation.
• Expertise in SQL for data validation, querying, and database testing.
• Experience with ETL testing methodologies and tools (e.g., Informatica, Talend, SSIS, or custom scripts).
• Hands-on experience with API testing tools (e.g., Postman, SoapUI, JMeter).
• Understanding of business rules engines and experience in testing complex rule sets.
• Familiarity with CI/CD tools and practices (e.g., Jenkins, Azure DevOps, GitHub Actions).
• Experience with version control systems (e.g., Git).
• Strong analytical, problem-solving, and communication skills.
CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. To support the ability to reward for merit-based performance, CGI typically does not hire individuals at or near the top of the range for their role. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $100,000.00 - $200000.00.
CGI Federal's benefits are offered to eligible professionals on their first day of employment to include:
• Competitive compensation
• Comprehensive insurance options
• Matching contributions through the 401(k) plan and the share purchase plan
• Paid time off for vacation, holidays, and sick time
• Paid parental leave
• Learning opportunities and tuition assistance
• Wellness and Well-being programs
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What you can expect from us:
Together, as owners, let's turn meaningful insights into action.
Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because...
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.
Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
Come join our team-one of the largest IT and business consulting services firms in the world.
Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.
CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at US_Employment_Compliance@cgi.com. You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned.
We make it easy to translate military experience and skills! Click here to be directed to our site that is dedicated to veterans and transitioning service members.
All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances.
CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI's legal duty to furnish information.

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