Senior Web Application Developer

Description

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.

Skills

C#, .NET, Javascript, REACT, Angular, Vue.js

Top Skills Details

C#,.NET,Javascript

Additional Skills & Qualifications

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. tools.

Experience Level

Expert Level
Job Type & Location
This is a Contract position based out of Indianapolis, IN.
Pay and Benefits
The pay range for this position is $40.00 - $54.50/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a fully onsite position in Indianapolis,IN.
Application Deadline
This position is anticipated to close on Jul 24, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.