APIs

APIs Developer Jobs

161 jobs found

1mo ago

Application Developer/Tester

Govcio LLC Fairfax, VA

Fairfax, VA

1mo ago

$135k - $165k/yr Full time API APIs Application

Apply Now

Job Description

Govcio LLC is seeking a Senior Application Developer/Tester who holds an active Secret clearance to perform manual and automated testing across applications, APIs, and databases within a federal Agile program. This hybrid role is based in Fairfax, VA and provides the chance to contribute to security, compliance, and documentation efforts that support federal accreditation activities.

Compensation for this role ranges from USD 135,000 to USD 165,000 per year.

Responsibilities

Create and run manual and automated test cases for Java and Spring Boot based systems, HTMX, SQL, and Oracle environments.
Conduct functional, integration, regression, performance, and security testing across Windows and Linux platforms.
Verify API behavior, user interface workflows, backend logic, and database interactions.
Record defects and test evidence in Azure DevOps, maintaining accurate and repeatable test artifacts.
Produce detailed and concise testing documentation to ensure testing procedures are clear and reproducible.
Support testing in both classified and unclassified environments in line with federal security procedures.
Participate in Agile ceremonies such as standups, planning, refinement, and retrospectives as part of the development team.
Integrate testing activities into Azure DevOps and collaborate to expand automation coverage.
Deliver testing artifacts that support Authority to Operate activities, including control validation and security assessment evidence.
Validate STIG compliance and configuration baselines as part of system security testing.
Communicate test status, risks, and issues clearly with government product owners and stakeholders.
Collaborate closely with developers, engineers, and cross-team members within the software development testing effort.

Requirements

High School diploma required with 10+ years of experience in a testing role within a software development team.
Experience testing software in both classified and unclassified federal environments.
Hands-on testing experience with Java, Spring Boot, HTMX, SQL, and Oracle.
Proficiency with Azure DevOps for test management, work items, and CI/CD pipelines.
Experience testing on Windows and Linux environments.
Working knowledge of the NIST Risk Management Framework RMF, including security control testing and ATO documentation.
Familiarity with STIGs and federal cybersecurity best practices.
Experience working on Agile Scrum teams.
Strong communication skills and the ability to engage directly with government product owners and mission stakeholders.
Ability to produce clear, concise testing documentation suitable for audits, compliance, and accreditation.

Technologies

Java
Spring Boot
HTMX
SQL
Oracle
Azure DevOps

Clearance

Active Secret clearance required, with the ability to obtain and hold DEA suitability.

View full job page →

1mo ago

Mobile/Web Developer (.Net)

Air Line Pilots Association, Int'l. McLean, VA

McLean, VA

1mo ago

$96k - $137k/yr Full time .NET .NET API

Apply Now

Job Description

Air Line Pilots Association, Int'l is seeking a Mobile/Web Developer (.Net) in McLean, VA (hybrid) to gather user requirements, design systems, and develop and test mobile and web applications and integrations in alignment with corporate architecture standards.

Responsibilities

Elicit and document user requirements.
Perform systems design and analysis to guide development.
Build and validate mobile and web applications, plus related application and database integrations that may be complex.
Contribute to project life cycle planning to ensure alignment with enterprise architecture standards and strategy.
Collaborate with architects, developers, data analysts, and other technology specialists on project implementation and strategy.
Research and propose design and technology infrastructure alternatives.
Assist in designing new alternatives where appropriate.
Provide input to management on technology direction and technical challenges.
Ensure consistent application of technical architecture standards and aid in resolving complex problems.
Work with business knowledge experts, leadership, and data analysts to shape ALPA's data store vision and translate reporting requirements from logical design to physical databases.
Adhere to departmental MEC and Association policies and procedures, collaborating across departments and advising management on changes to standards and policies.
Deliver solutions that reflect an understanding of client needs and align with MEC and Association strategic goals.

Requirements

Bachelor's degree in a relevant field (for example, Computer Science, IT, Web Applications) from an accredited college or university; master's degree or postgraduate coursework preferred, or an equivalent combination of education and practical experience.
Five years of related experience required; additional directly applicable experience may substitute for the academic requirement as determined by management.
Expertise with .NET MAUI.
Blazor, Sitecore, DNN, Coveo, Visual Studio.Net, ASP.Net, C#, Java, SQL Server.
Strong skills in systems analysis, design, and requirements gathering.
Solid knowledge of the Microsoft .Net Framework.
Proficiency in web markup and client-side scripting including HTML, CSS, JavaScript, and jQuery.
Experience with CMS, advanced JavaScript libraries, preprocessing platforms, version control, cross-browser development, and RESTful Services and APIs is a plus.
Experience with automation and web performance tools is a plus.
Knowledge of image editing tools for basic adjustments.
Understanding of asynchronous request handling, partial page updates, and AJAX.
Excellent interpersonal and written communication skills for effective collaboration at all levels.
Self-starter with professional maturity, sound judgment, and the ability to make independent decisions.
Strong time management skills and the ability to handle multiple projects in a fast-paced environment.
Ability to document internal processes and guidelines.
Experience in end-user security administration is helpful.
Proficiency with Microsoft Word, Outlook, and PowerPoint.

Technologies

.NET MAUI
Blazor
Sitecore
DNN
Coveo
Visual Studio.Net
ASP.Net
C#
Java
SQL Server
HTML
CSS
JavaScript
jQuery
CMS
RESTful Services and APIs
Microsoft .Net Framework

Benefits

401k plan with a 12% non-elective employer contribution plus 2% into a Market-Based Cash Balance Plan after 180 days, with no employee contribution; Roth option and 4-year vesting.
Generous health coverage from day one, including PPO, Kaiser where available, and a High Deductible Health Plan covering medical, dental, and vision for employees, spouses, and dependents.
15 days paid vacation and 13 holidays per year, plus 2 volunteer days.
Generous sick and bereavement leave.
Competitive parental leave.
Company-paid disability and life insurance.
Flexible Spending and Health Savings accounts, plus a retiree health plan.
Education Assistance Program and optional benefits such as pet insurance, excess life insurance, legal plan, and qualified transportation fringe benefits where available.
Partial remote work opportunities.

Travel

5 to 10 percent travel expectation.

Union status

Position covered by a collective bargaining agreement.

Relocation

Relocation not provided.

Sponsorship

Sponsorship not available for this position.

Physical Demands

Constant use of computer, smartphone, and tablet devices.
Typically required to remain stationary, interpret information, and communicate with others.
Regularly required to sit, stand, bend, reach, and travel locally and nationally; infrequent international travel; occasional bending, stooping, squatting, and pushing or pulling to move cases.
Occasionally lift or move items up to 10 pounds.
During travel, may handle luggage up to 50 pounds; assistance may not always be available.

View full job page →

1mo ago

Senior Web Developer/Master

BJ Concepts inc Huntsville, AL

Huntsville, AL

1mo ago

$150k - $160k/yr Full time Senior AI APIs

Apply Now

Job Description

BJ Concepts inc is seeking a Senior Web Developer/Master to lead secure, DoD-aligned web initiatives from Huntsville, Alabama. The role blends hands-on development with webmaster support, SharePoint administration, and exploration of AI and large language models, all within a hybrid remote setup and requiring a SECRET clearance.

Responsibilities

Create graphical designs and plan site architecture
Layout web applications, websites, and related services and technologies
Build dynamic and static interfaces using HTML, DHTML, VBScript, JavaScript, and CSS
Design, develop, and maintain web content with blogs, RSS/news feeds, audio/video, and social APIs
Develop SharePoint pages and content using basic web parts; administer permissions and groups
Update information and create workflows; perform routine maintenance
Design and implement links to other DoD sites in compliance with DoD and U.S. Army G-6 standards
Analyze and assess existing and emerging technologies for relevance to web environments
Conduct software, standardization, and configuration/topography/site structure assessments
Identify changes necessary to upgrade websites and services
Perform reviews and audits of websites and online content for timeliness, compliance, and regulatory adherence
Maintain and administer websites and web-based services; enhance their capabilities

Requirements

Bachelor’s degree in computer science, information systems, or a related field
Five years of Web and Systems Development experience
CompTIA Security+ certification
Microsoft Endpoint Administrator (MD-102) certification
Experience with MS 365, Power BI, Power Apps, Power Automate, Dataverse, Azure DevOps, Azure Storage, Xcode, VS Code, and PowerQuery
Experience with Artificial Intelligence (AI), Large Language Models (LLMs), and Bot creation
Experience using Adobe Creative Suite (Photoshop, Illustrator, Lightroom) and other standard graphic design software
Excellent oral and written communication skills
Familiar with Section 508 and EIT Accessibility Standards
Maintain a SECRET clearance
Physical ability to walk, stand, kneel, squat, bend, lift, and push while performing various tasks
Comfortable working at heights (catwalks, lifts), in dimly lit venues, and around restricted spaces; able to lift up to 50 pounds
Excellent visual acuity and hearing; ability to read architectural plans and schematic drawings

Technologies

MS 365
Power BI
Power Apps
Power Automate
Dataverse
Azure DevOps
Azure Storage
Xcode
VS Code
PowerQuery
HTML
DHTML
VBScript
JavaScript
CSS
SharePoint
Adobe Creative Suite (Photoshop, Illustrator, Lightroom)
Artificial Intelligence (AI)
Large Language Models (LLMs)
Bot creation

Benefits

Dental insurance
Health insurance
Life insurance
Paid time off
Relocation assistance
Vision insurance

Location

Hybrid remote in Huntsville, AL 35811

View full job page →

1mo ago

Full Stack Developer (Power Automate + AI)

Data Systems Analysts, Inc. Aberdeen Proving Ground, MD Hybrid

Aberdeen Proving Ground, MD

1mo ago

Full time Python Senior .NET

Apply Now

Job Description

Hybrid remote work from Aberdeen Proving Ground, MD, with on-site collaboration once per week for sprint ceremonies, demos, and stakeholder sessions. This role focuses on designing, building, and deploying full‑stack web applications and data‑driven automation within the Microsoft 365 and Azure ecosystem, including Power Platform, BI, and AI capabilities.

Responsibilities

Architect and deliver full‑stack web applications and services that integrate with Microsoft 365 and Azure.
Lead the development of Microsoft Power Platform solutions, especially scalable Power Automate flows with governance, monitoring, exception handling, connectors, and ALM.
Create intuitive Power BI reports and data models that translate complex data into actionable insights.
Incorporate AI capabilities such as prompt‑driven workflows, classification/extraction, and copilots/assistants into new or existing apps; experience with AskSage and Copilot in enterprise contexts is a bonus.
Collaborate with stakeholders to refine requirements, iterate quickly, and deliver secure, compliant solutions.
Operate effectively in a hybrid team, with remote day‑to‑day work and APG on‑site presence 1x per week for sprint ceremonies, demos, and stakeholder sessions.

Requirements

Experience with Microsoft Copilot or an approved equivalent AI solution.
5+ years in software engineering with demonstrated full‑stack delivery (C#, .NET, Node, Python) and modern front‑end frameworks.
Advanced Power Automate expertise (HTTP actions, Graph/REST integration, custom connectors, solution packaging, environment strategies).
Solid Power Platform knowledge (Power Apps basics, Power BI authoring, Dataverse/SharePoint as data sources).
Proven experience building secure, production‑grade integrations.
Strong data skills: modeling, DAX/M, performance tuning, and governance in Power BI.
Excellent communication and stakeholder facilitation skills; comfortable with rapid iteration and live demos.
CompTIA Security+ (or ability to obtain within 90 days of hire).
One or more Microsoft Power Platform certifications (e.g., PL‑900/PL‑100/PL‑300) or required within 6 months of hire.
Active or Current DoD Secret Clearance is required for this position.

Technologies: Microsoft Copilot, Microsoft 365, Azure, Power Automate, Power Apps, Power BI, Dataverse, SharePoint, C#, .NET, Node, Python, Microsoft Graph, REST, HTTP actions, custom connectors, ALM, DAX, M (Power Query), AskSage, Azure OpenAI, Azure Functions, Logic Apps, API Management, Key Vault, Service Bus, Storage, Power Query, dataflows, gateway configuration.

Desirable qualifications

Familiarity with AI in the Microsoft ecosystem (Copilot family, Azure OpenAI) and exposure to AskSage.
Experience in DoD/Army environments (e.g., Army 365), RMF/ATO awareness, or data handling in IL enclaves.
CI/CD for Power Platform (solutions, pipelines), test automation, and governance at scale.
Azure services such as Functions, Logic Apps, API Management, Key Vault, Service Bus, and Storage.
Data engineering basics: Power Query, dataflows, incremental refresh, gateway configuration.

View full job page →

1mo ago

Senior Mobile Application Developer

DornerWorks Grand Rapids, MI Hybrid

Grand Rapids, MI

1mo ago

$62k - $156k/yr Full time Senior Agile Android

Apply Now

Job Description

DornerWorks is seeking a Senior Mobile Application Developer to design, build, and deploy mobile solutions for medical and IoT products. This hybrid role in Grand Rapids, MI centers on delivering native or cross‑platform apps for iOS and Android, while collaborating across design and engineering teams and engaging directly with customers to guide development and showcase outcomes.

Responsibilities

Design, develop, and deploy mobile applications for iOS and Android using native languages (Swift, Kotlin/Java) and/or cross‑platform tools (Flutter, React Native).
Collaborate with designers and developers to deliver seamless customer solutions.
Interface directly with customers to guide the development process.
Build and nurture business relationships with new and existing customers.
Provide detailed work estimates for new business proposals.
Showcase project milestones and highlights for stakeholders.

Requirements

Minimum 5 years of professional mobile development experience.
Bachelor's degree required.
Proficient at picking up new platforms for mobile app development and deployment.
Ability to work independently on mobile programming with minimal input.
Comfort interfacing with customers to discuss features and demonstrate progress.
Ability to identify tasks at project start, outline steps, and create customer proposals.
Capability to refine scope and estimates for immediate next steps to align with budgets and guide the team.
Strong team‑oriented communication, anticipating what colleagues need to know and how work integrates with others.

Technologies

Swift, Xcode
Kotlin, Java
Android Studio
Dart, JavaScript, TypeScript
C#, Flutter, React Native
iOS, Android

Benefits

Diverse, engaging, and collaborative work environment.
ESOP company — 100% employee owned.
Continuous learning with exposure to multiple projects and technologies.
Flexible work arrangement — remote or in person.
Competitive pay with quarterly bonus opportunities.
Flex Fridays and a compressed work week with occasional long Fridays off.
Strong emphasis on healthy work‑life balance as a core value.
Regular social events, onsite and virtual.
Supportive team culture focused on collaboration and growth.

Bonus to have

Experience designing and developing apps for wearables, including Apple Watch (WatchKit), Wear OS, and Garmin devices (Connect IQ).
Ability to create mockups and extract assets using Sketch, Photoshop, or similar tools.
Understanding of UI/UX principles and best practices.

Salary Information

The listed annual salary range is a guideline used for hiring decisions, with compensation reflecting experience and skill specialization.

Early career engineer: $62,000 – $95,000
Mid–level career engineer: $95,000 – $118,000
Advanced career engineer: $118,000 – $156,000

Employees at DornerWorks benefit from a 40‑hour work week in a remote/hybrid setting, with options for health and wellness benefits as needed. DornerWorks is an equal opportunity employer and participates in the E‑Verify program. EEO/M/F/Disabled/Veteran. The company values a diverse workplace and an inclusive culture where varied perspectives are honored.

This facility operates under ITAR, so hires must demonstrate with verifiable documentation that they are a U.S. citizen, an active Green Card holder, or a “Protected Person” as defined by 8 U.S.C. 1324 (b)(a)(3).

View full job page →

1mo ago

App Developer IOS/Android

AFEX Raleigh, NC

Raleigh, NC

1mo ago

$60k - $120k/yr Full time Python .NET .NET Core

Apply Now

Job Description

What you can expect

AFEX is growing its engineering team in Raleigh, NC, and seeking a Mobile and Embedded Connectivity Engineer to build a cross platform .NET MAUI application for iOS, Android, and Windows, along with PC utilities and OTA capable interfaces to embedded control units. This onsite role unites mobile, cloud, and embedded systems, offering collaboration across disciplines and the chance to influence end-to-end solutions. The position offers a salary range of USD 60,000 - 120,000 per year and a hub in Raleigh where you will work closely with firmware and hardware teams.

Responsibilities

Develop and maintain a .NET MAUI application for iOS, Android, and Windows.
Apply C# async/await, MVVM, and modern .NET architecture patterns.
Implement secure login flows using OpenID Connect with PKCE, support deep links, and manage token refresh.
Provide in-app access to technical documentation (PDFs, manuals, drawings) with rendering via SkiaSharp.
Design a clean, intuitive UI/UX optimized for technicians and field engineers.
Establish reliable communication with AFEX MCU devices through Bluetooth LE, Wi-Fi, and USB or virtual COM ports.
Implement features for configuration read/write, data logging and diagnostics, field-test tools, and OTA firmware updates.
Collaborate with STM32 and ESP32 firmware teams to define binary protocols.
Build companion desktop utilities (MAUI or standalone .NET apps) for device commissioning, log extraction, and automated configuration workflows.
Develop small maintenance or deployment scripts using Python or PowerShell.
Contribute to backend systems with AWS CDK in C# and core services such as Cognito, API Gateway, Lambda, S3, DynamoDB, CloudFront, and KMS.
Ensure secure API communication between the app and AWS backend.
Oversee firmware hosting, versioning, and release management.
Use Git and GitHub with disciplined branching, tagging, and PR practices.
Participate in design reviews with embedded, hardware, and test engineering teams.
Document communication protocols, API endpoints, and onboarding guides for internal teams.

Requirements

Minimum 5 years of professional software development experience.
Extensive experience with .NET (C#) and .NET MAUI for multi-platform apps.
Strong knowledge of async programming, MVVM, and modern .NET architecture.
Experience interfacing with embedded devices via Bluetooth LE, Wi-Fi (TCP/UDP), and USB serial.
Hands-on background implementing MCU firmware update systems, OTA preferred.
Solid understanding of AWS services, including CDK (C#), Cognito, API Gateway, Lambda, S3, DynamoDB, CloudFront, and KMS.
Experience implementing secure authentication flows using OIDC and PKCE.
Familiarity with Git-based workflows and CI/CD pipelines.

Technologies you’ll work with

.NET MAUI
C#
MVVM
OIDC
PKCE
SkiaSharp
Python
PowerShell
AWS CDK (C#)
Cognito
API Gateway
Lambda
S3
DynamoDB
CloudFront
KMS
Git
GitHub
Bluetooth LE
Wi-Fi
USB/virtual COM ports
OTA firmware updates
Minimal APIs in .NET
iOS
Android
Windows
STM32
ESP32
PDF rendering

View full job page →

1mo ago

Senior Power Platform / C# Developer

ITAC Solutions Birmingham, AL

Birmingham, AL

1mo ago

$135k+/yr Full time Senior .NET APIs

Apply Now

Job Description

The Senior Power Platform / C# Developer role in Birmingham, AL (onsite) at ITAC Solutions focuses on designing and delivering Dataverse-driven Model-Driven Apps, custom C# plugins, and Power Platform solutions, with Azure integration and PCF-based UI components for enterprise-scale applications. Minimum experience: 3 years. Salary: USD 135,000 per year.

Responsibilities

Design and build Dataverse-driven Model-Driven Apps
Develop custom C# plugins and business logic extensions
Create client-side functionality using JavaScript/TypeScript
Build and maintain Power Automate workflows
Develop reusable UI components using PCF
Integrate solutions with Azure services and external APIs
Support enterprise data and reporting through SQL

Requirements

5+ years of related experience
3+ years of building solutions on MS Power Platform
Hands-on experience building Dataverse plugins using C#/.NET
Strong experience with Power Apps Component Framework (PCF)
Experience integrating Power Platform with Azure Functions/Logic Apps
Experience with Liquid templating and marketing automation workflows
Ability to design scalable, enterprise-grade Power Platform solutions

Technologies

Dataverse, Model-Driven Apps, C#, .NET, JavaScript, TypeScript, Power Automate, Power Apps Component Framework (PCF), Azure, Azure Functions, Logic Apps, Liquid templating, SQL, Power Platform