Senior Web Application Developer

inSync Staffing

Washington DC, DC

JOB DETAILS
SKILLS
Amazon Web Services (AWS), Application Programming Interface (API), Applications Security, Architectural Services, Artificial Intelligence (AI), Automation, Best Practices, Business Skills, Cloud Applications, Cloud Architecture, Cloud Computing, Code Reviews, Coding Standards, Communication Skills, Computer Science, Continuous Deployment/Delivery, Continuous Improvement, Continuous Integration, Customer Relations, Data Modeling, Database Triggers, Dental Insurance, Identify Issues, Information Technology & Information Systems, Internet Application, Internet Technology, Interoperability, JavaScript Frameworks, Leadership, Mentoring, Microservices, Microsoft .NET, Microsoft C# (C Sharp), Microsoft Transact-SQL (T-SQL), Microsoft Windows Azure, Multiplatform/Cross-Platform, Node.js, Operational Strategy, Performance Tuning/Optimization, Product Lifecycle, Production Systems, Python Programming/Scripting Language, Query Optimization, REST (Representational State Transfer), React.js, SQL (Structured Query Language), Scalable System Development, Semantic Search, Software Design, Software Development, Stored Procedures, Systems Scalability, Team Lead/Manager, Technical Leadership, Technical Presentation, Technical Strategy, User Interface/Experience (UI/UX), Vue.js, Web Programming
LOCATION
Washington DC, DC
POSTED
2 days ago

Senior Web Application Developer
Only natural-born U.S. citizens can be considered for this role


We are seeking a highly experienced Senior Web Application Developer to serve as a technical leader, client liaison, and AI-enabled solutions engineer. This role requires a well-rounded full-stack background across modern web technologies, including but not limited to .NET/C#, JavaScript frameworks, cloud-native architectures, and emerging AI/ML integrations.

The ideal candidate brings 8+ years of experience building scalable web applications, combined with hands-on experience incorporating AI/ML capabilities (e.g., generative AI, APIs, or data-driven models) into production systems. This individual will act as a trusted advisor to clients, shaping technical direction while leading engineering teams to deliver innovative, secure, and high-performing solutions.

Primary Responsibilities

Full-Stack Architecture & Technical Leadership

Lead the architecture, design, and development of modern web applications across a diverse technology stack, including .NET/C#, Node.js, and front-end frameworks (React, Angular, Vue).

Design and implement scalable, cloud-native solutions using microservices and serverless architectures.

Establish and enforce engineering best practices, coding standards, and architectural patterns across teams.

AI/ML Integration & Intelligent Solutions

Design and implement AI-enabled application features, such as:

Integration with LLMs and AI APIs (e.g., Azure OpenAI, AWS Bedrock, or similar platforms)

Intelligent search, summarization, recommendation systems, or automation workflows

Collaborate with stakeholders to identify opportunities where AI can enhance user experience, decision-making, or operational efficiency.

Ensure responsible and secure use of AI technologies, including data privacy, governance, and model evaluation.

Client Engagement & Technical Strategy

Serve as a primary technical interface to clients, translating business needs into scalable technical solutions.

Lead solutioning sessions, architecture discussions, and technical briefings with stakeholders.

Provide strategic guidance on modern web technologies, cloud adoption, and AI integration.

Build strong client relationships as a trusted technical advisor.

Advanced Web Application & API Development

Oversee development of secure, high-performance web applications and RESTful APIs.

Ensure interoperability and cross-platform integration across systems.

Drive best practices in API design, versioning, and performance optimization.

Cloud & DevOps Enablement

Architect and deploy applications in AWS and Azure, leveraging serverless and containerized services.

Lead CI/CD pipeline implementation and DevSecOps practices.

Optimize systems for scalability, reliability, and cost efficiency in cloud environments.

Team Leadership & Mentorship

Mentor developers across multiple technology stacks, not limited to .NET.

Lead code reviews, architecture reviews, and technical decision-making.

Foster a culture of innovation, continuous learning, and engineering excellence.

Security, Performance & Quality

Ensure applications meet modern security standards, including secure API design and cloud security best practices.

Implement comprehensive testing strategies and performance monitoring.

Continuously improve system resilience, scalability, and maintainability.

UI/UX & Modern Web Practices

Collaborate with UI/UX teams to deliver responsive, accessible, and user-centric applications.

Drive adoption of modern front-end architecture and performance optimization techniques.

Innovation & Continuous Improvement

Stay current with emerging web and AI technologies, evaluating their applicability to client missions.

Introduce new tools, frameworks, and AI capabilities to improve delivery and innovation.

Basic Qualifications

Bachelor s or Master s degree in Computer Science, Information Technology, or related field (or equivalent experience).

8+ years of experience in full-stack web application development, including .NET/C# and modern JavaScript frameworks.

Demonstrated experience working across multiple web technologies beyond .NET (e.g., Node.js, Python, or similar).

Strong hands-on experience with T-SQL, including writing and optimizing SQL queries, stored procedures, triggers, functions, and other database objects.

Demonstrated commitment to built-in quality, including developing reliable, maintainable, and well-tested solutions that meet performance, security, and coding standards.

Ability to follow development best practices, conduct code reviews, troubleshoot issues, and ensure deliverables meet quality expectations throughout the development lifecycle.

Hands-on experience integrating or developing AI/ML capabilities, such as:

Working with AI APIs (Azure OpenAI, AWS Bedrock, etc.)

Implementing data-driven or intelligent application features

Strong experience with AWS and/or Azure cloud platforms, including serverless architectures.

Deep understanding of web architecture, microservices, and RESTful API design.

Experience with SQL and NoSQL databases.

Proven ability to lead teams and engage directly with clients.

Strong communication skills with the ability to bridge business needs and technical solutions.

Knowledge of secure application development and cloud security practices.

Preferred Qualifications

Certifications in AWS, Azure, or AI/ML-related technologies.

Experience building or integrating generative AI solutions in production environments.

Familiarity with Python for AI/ML workflows.

Experience with DevSecOps, CI/CD pipelines, and automation tools.

Prior experience in client-facing technical leadership roles within complex or mission-driven environments



Benefits (employee contribution):
  • Health insurance
  • Health savings account
  • Dental insurance
  • Vision insurance
  • Flexible spending accounts
  • Life insurance
  • Retirement plan

All qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Rate of pay within the stated range will depend on the qualification of the applicant.

About the Company

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inSync Staffing

We recognize the VMS program management team is our customer and needs to be serviced with integrity, so we built and continue to improve upon our delivery methods as we strive to provide the highest quality service possible. inSync Staffing’s management team recognized ten years ago the inevitable changes to the staffing industry being brought about by technology and the growing trend of Fortune 1000 corporations to outsource management of their contingent workforces to meet compliance and cost control goals. Rather than swim upstream against the changes, inSync Staffing has embraced MSP and VMS programs as our customers, not competitors. We asked program managers how they want to be serviced. The result of their input is that we have structured inSync Staffing as a recruiting and customer service organization, unlike traditional staffing companies who sell directly to the end client. Our delivery model allows us concentrates our resources on how to best supply candidates in a very competitive MSP/VMS program environment.
COMPANY SIZE
50 to 99 employees
INDUSTRY
Staffing/Employment Agencies
FOUNDED
2014
WEBSITE
http://www.insyncstaffing.com/default.html