Senior Web Application Developer

Tokio Marine HCC

$97K — $134K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of professional software development experience
  • Bachelor's degree in computer science or related field
  • Strong experience with C#, ASP.NET, and SQL Server
  • Experience developing and supporting web applications
  • Strong understanding of JavaScript, HTML5, and CSS3
  • Familiarity with frontend frameworks like React, Angular, or Vue.js
  • 2+ years supporting cloud-based environments preferred, with AWS/Azure certifications a plus

Responsibilities

  • Design and maintain web applications with C# and ASP.NET
  • Enhance frontend features using JavaScript, HTML, and CSS
  • Develop SQL queries for data reporting
  • Optimize web application performance and user experience
  • Integrate contest websites with external platforms and APIs
  • Collaborate with UI/UX designers for responsive interfaces
  • Manage data exports to third-party platforms

Benefits

  • Comprehensive medical, vision, and dental coverage from day one
  • 401(k) plan with 6% company match
  • 20 days of PTO plus holidays and volunteer time off
  • Paid parental leave and wellness program access
  • Student loan matching program
  • Opportunities for career advancement and ongoing development
Full Job Description
Role Details

Job Title: Senior Web Application Developer

Location: Woodbridge, NJ (onsite 5 days in the office)

Reports To: Senior Vice President

Employment Type: Full time

Job Requisition ID: 2026-539

Requisition Begin Date: 06/04/2026

Role Overview

We're looking for a candidate with AWS exposure, strong cloud infrastructure, and application support experience to join our team and help lead the development and management of our innovative web applications. Is that you?

This role will work closely with the Lead Developer and existing development staff to support, enhance, and modernize MDM's portfolio of online gaming, sweepstakes, sports contests, and promotional web applications.

Ideally, you will possess a strong blend of full-stack development expertise and cloud infrastructure knowledge, helping maintain current platforms while contributing to the strategic migration from our existing web-hosted environment to a fully redundant AWS architecture.

The successful candidate will serve as a senior technical contributor who can provide operational support, introduce new ideas and best practices, and function as a capable backup resource during periods when the Lead Developer is unavailable.

Key Responsibilities
  • Design and maintain web applications using C#, ASP.NET, and related technologies
  • Enhance frontend features using JavaScript, HTML, and CSS
  • Develop SQL queries for data reporting and manage relational databases
  • Optimize web application performance, scalability, and user experience
  • Integrate contest websites with external platforms, including CRM systems and APIs
  • Collaborate with UI/UX designers to create responsive and user-friendly interfaces
  • Manage data exports to third-party platforms and APIs


Role Overview

First 30 Days:
  • Become familiar with MDM's gaming and promotional platforms.
  • Understand the existing web-hosting environment.
  • Learn deployment, support, and operational processes.
  • Build relationships with development team members and business stakeholders.
  • Align with senior developers and the team on goals and ongoing projects.

First 90 Days:
  • Contribute code enhancements and bug fixes to production applications.
  • Begin supporting cloud infrastructure administration and monitoring activities.
  • Participate in AWS migration planning and implementation efforts.
  • Assume responsibility for selected application and infrastructure support functions.
  • Demonstrate ability to independently troubleshoot production incidents.
  • Troubleshoot and optimize website performance.
  • Develop and implement new features for web applications like sports contests and instant win games.
  • Coordinate with stakeholders to integrate products into client platforms.
  • Write and optimize SQL queries for data management and reporting.


What You Bring
  • 5+ years of professional software development experience
  • Bachelor's degree in computer science, a related field, or the equivalent education and/or experience

Application Development
  • Strong experience with C#, ASP.NET MVC/Core, SQL Server
  • Experience developing and supporting production web applications
  • Strong understanding of: JavaScript, HTML5, CSS3
  • Experience with: REST APIs, API integrations, Data exchange processes
  • Familiarity with frontend frameworks like React, Angular, or Vue.js
  • Experience with Docker and Containerization


Infrastructure & Cloud (Preferred but Optional)
  • 2+ years supporting cloud-based or hosted web environments
  • AWS / Azure Certifications a plus (Solutions Architect or Developer)
  • Prior experience in the sweepstakes, gaming, or entertainment industries
  • Experience administering or supporting: Liquid Web / Similar hosting providers
  • Knowledge of: EC2, S3, RDS, CloudWatch
  • Understanding of: Load balancing, High availability, Disaster recovery


If this position sounds like a perfect fit, please apply WITH A COVER LETTER, expressing why you want to join our team.

What We Offer
  • Competitive salary and comprehensive benefit package
  • Strong learning culture with ongoing development opportunities
  • Opportunities for growth and career advancement
  • Comprehensive medical, vision, and dental coverage, with eligibility beginning on your first day of employment
  • Basic life and disability insurance
  • 401(k) plan with 6% company match
  • 20 days of PTO, two floating holidays, approximately 11 paid holidays, and volunteer time off
  • Paid parental leave
  • Access to our award-winning wellness program, including mental health services, fitness network membership, and a complimentary Headspace subscription
  • Student loan matching program
  • Employee discount program
  • An opportunity to do meaningful work and love what you do


Pay Transparency

The pay range for this position is $97,800 - $134,400 annually, which includes geographic adjustments, where applicable. The pay range is the range THMCC, in good faith, believes is the range of compensation for this role at the time of this posting. The hired applicant will be offered pay within the entire range based on the candidate's geographic location, qualifications, work experience, education, and/or skill level. The Company is fully committed to ensuring equal pay opportunities for equal work regardless of color, race, sex, national origin, sexual orientation, religion, age, veteran status, disability, pregnancy, citizenship status, genetic information, or any other basis protected by federal, state, or local pay equity laws.

Disclaimer

As an insurance company, we comply with certain federal, state and local laws such as the Violent Crime Control and Law Enforcement Act of 1994 (18 USC § 1033(e)), which restricts our ability to employ individuals with certain types of criminal convictions. Where not restricted by law and for criminal history not covered by this law, the Company will consider qualified applicants with arrest or conviction history in compliance with applicable law.

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