Software Engineer - .NET

CREATIVITY IS OUR SUPERPOWER. It's our heritage and it's also our future. Because we don't just make toys. We create innovative products and experiences that inspire fans, entertain audiences and develop children through play. Mattel is at its best when every member of our team feels respected, included, and heard—when everyone can show up as themselves and do their best work every day. We value and share an infinite range of ideas and voices that evolve and broaden our perspectives with a reach that extends into all our brands, partners, and suppliers.

The Team:
The Opportunity:
What Your Impact Will Be

The .NET program developer is responsible for analyzing, designing, and developing business applications built on the .NET platform. This role ensures requirements are effectively translated into system solutions. The developer will work on system enhancements, production issues, and continuous improvements to ensure applications meet business needs, performance expectations, and compliance standards, and will take over the existing application developed by the intern.

Key Responsibilities

Application Development support:

• Work closely with the .NET System Analyst
• Review technical designs and ensure alignment with requirements
• Program coding based on the requirement, testing, and deployment phases.
• Assist in code reviews and solution validation when necessary
  
  

Testing & Quality Assurance

• Define test scenarios, test cases, and acceptance criteria based on requirements.
• Support SIT (System integration test) and UAT (User acceptance testing)
• Validate functionality and ensure it meets business expectations.
• Coordinate defect tracking and resolution with development teams.
  
  

Production support and enhancement:

• Provide L2/L3 production support for .NET applications.
• Analyze and troubleshoot system issues, perform root cause analysis (RCA).
• Support application releases, patches, and enhancements.
• Work proactively to identify improvement opportunities and reduce recurring issues.
  
  

Integration and Data Management

• Design and support system integrations using REST APIs, Web Services, and messaging systems.
• Work with SQL Server databases for data analysis, reporting, and troubleshooting.
• Ensure data consistency, accuracy, and integrity across systems.
  
  

Governance, Compliance & Best Practices

• Ensure adherence to SDLC, ITIL, and change management processes.
• Follow security, audit, and compliance requirements.
• Maintain proper version control and documentation standards.
• Required Skills & Qualifications
• Strong experience in .NET / C#, ASP.NET, .NET Core, Java, VB, and web services.
• Hands-on experience with IIS, Windows Services, and application configuration.
• Strong SQL skills with SQL Server (querying, performance tuning, troubleshooting).
• Experience with logging and monitoring tools.
• Understanding of production environments, incident management, and ITIL concepts.
• Experience with ITIL, ServiceNow, or any ticketing system process
• Experience with Azure or AWS cloud environments.
• Experience supporting high-volume, business-critical applications, e.g., EDI
• Analytical & Functional Skills
• Strong business analysis and problem-solving skills
• Ability to convert business needs into technical requirements
• Soft Skills
• Strong analytical and problem-solving skills.
• Ability to work under pressure in high-availability production environments (supporting manufacturing plants with an expected shorter resolution time)
• Strong communication and presentation skills with end users and business stakeholders
• Strong attention to detail and documentation discipline.
• Attention to detail and structured thinking
• Degree in computer science, Information Technology, or related field (or equivalent experience)
• Min 3 years of experience in .NET/web application development or support area
• Understanding of manufacturing back office, shop floor operation, and trading companies operation is value added
• Eager to work on-call or non-standard hours (Asia time zone) whenever necessary
• Eager to travel occasionally as required
  
  

Don't meet every single requirement At Mattel, we are dedicated to an inclusive workplace and a culture of belonging. If you're excited about this role but your past experience doesn't align perfectly with every qualification in the job description, we still encourage you to apply. You may be just the right candidate for this or other roles.

How We Work

We are a purpose driven company aiming to empower generations to explore the wonder of childhood and reach their full potential. We live up to our purpose employing the following behaviors

• We collaborate Being a part of Mattel means being part of one team with shared values and common goals. Every person counts and working closely together always brings better results. Partnership is our process and our collective capabilities is our superpower.
• We innovate At Mattel we always aim to find new and better ways to create innovative products and experiences. No matter where you work in the organization, you can always make a difference and have real impact. We welcome new ideas and value new initiatives that challenge conventional thinking.
• We execute We are a performance-driven company. We strive for excellence and are focused on pursuing best-in-class outcomes. We believe in accountability and ownership and know that our people are at their best when they are empowered to create and deliver results.
  
  

Our Approach to Flexible Work:
We embrace a flexible work model designed to empower a culture of growth, optimism, and wellbeing, where every employee can reach their full potential. Combining purposeful in-person collaboration with flexibility, our focus is to optimize performance and drive connection for moments that matter.

Who We Are

Mattel is a leading global toy and family entertainment company and owner of one of the most iconic brand portfolios in the world. We engage consumers and fans through our franchise brands, including Barbie, Hot Wheels, Fisher-Price, American Girl, Thomas & Friends, UNO, Masters of the Universe, Matchbox, Monster High, MEGA and Polly Pocket, as well as other popular properties that we own or license in partnership with global entertainment companies. Our offerings include toys, content, consumer products, digital and live experiences. Our products are sold in collaboration with the world's leading retail and ecommerce companies. Since its founding in 1945, Mattel is proud to be a trusted partner in empowering generations to explore the wonder of childhood and reach their full potential.

Mattel's award-winning workplace culture has been recognized by Forbes, Fast Company, Newsweek, Great Place to Work, TIME, and more.

Visit us at https //jobs.mattel.com/ and www.instagram.com/MattelCareers .

Mattel is an Equal Opportunity Employer where we want you to bring your authentic self to work every day. We welcome all job seekers, and all applicants will receive consideration for employment.

Videos to watch

The Culture at Mattel

Corporate Philanthropy