Sr. Software Engineer (Java/React) Major Entertainment Company NO H1B OR C2C

TechLink Resources, Inc; Los Angeles (CA); Hybrid; USD 120,000 - 160,000; Full time

Job summary

TechLink Resources, Inc. is seeking a Senior Full Stack Software Engineer to join a hybrid team in Los Angeles. You’ll work across Java/Spring Boot backend and React/TypeScript frontend, with a balance leaning toward backend engineering.

The role supports a large-scale advertising technology platform focused on campaign management and operations. Responsibilities span designing services, integrating REST/GraphQL, and modernizing the platform while improving operational efficiency.

Qualifications

• 3-5+ years of professional software engineering experience
• Proficient in Java and Spring Boot
• Experience with React and REST APIs
• Strong relational database experience (MySQL)
• Solid understanding of full-stack development across backend and frontend
• Experience with distributed or SOA architectures
• Excellent problem-solving and communication skills

Responsibilities

• Design, develop, and maintain backend services using Java and Spring Boot
• Build frontend functionality with React and TypeScript
• Develop services supporting campaign trafficking, search, targeting, and ads workflows
• Integrate services via REST, GraphQL, and event-driven patterns
• Work with MySQL and other data technologies
• Support CI/CD and deployment processes
• Participate in system design, code reviews, and technical decisions
• Troubleshoot production issues across multiple services
• Collaborate with engineers, product partners, and stakeholders
• Help modernize the platform while reducing manual effort for users

Skills

Java

Spring Boot

React

REST APIs

MySQL

Full-stack

Distributed architectures

Debugging

Communication

Job description

Senior Full Stack Software Engineer - Java / React

Work Model: Hybrid - 4 days onsite / 1 day remote

We are seeking a Senior Full Stack Software Engineer to join a team responsible for developing and supporting a large-scale advertising technology platform. This engineer will work across both backend services and frontend applications that support campaign management, search, targeting, and advertising operations.

This is a true full-stack position with responsibilities across Java/Spring Boot backend development and React/TypeScript frontend development. While there is a slight emphasis on backend engineering, candidates should be comfortable contributing across the entire technology stack.

The team is currently focused on improving operational efficiency, modernizing its platform, and enhancing the overall user experience of its Mission Control advertising system.

Key Responsibilities

• Design, develop, and maintain backend services using Java and Spring Boot
• Build and enhance frontend functionality using React and TypeScript
• Develop services supporting campaign trafficking, search, targeting, and advertising workflows
• Design and implement integrations across services using REST APIs, GraphQL, and event-driven architecture
• Work with MySQL and other application data technologies
• Contribute to modernization efforts involving service architecture, shared libraries, and platform independence
• Support CI/CD pipeline adoption and improvements to engineering and deployment processes
• Participate in system design, architecture discussions, code reviews, and technical decision-making
• Troubleshoot production issues and provide operational support across multiple services
• Collaborate with engineers, product partners, and other stakeholders on cross-service initiatives
• Help improve and modernize an established advertising platform while reducing manual processes for internal users

Required Qualifications

• Approximately 3-5+ years of professional software engineering experience
• Strong experience with Java
• Hands-on experience developing applications with Spring Boot
• Experience with React
• Experience developing and integrating REST APIs
• Experience working with relational databases such as MySQL
• Strong understanding of full-stack application development
• Ability to work across both backend and frontend systems
• Experience working within distributed or service-oriented architectures
• Strong problem-solving, debugging, and communication skills

Preferred Qualifications

• Experience with GraphQL
• Experience with Node.js
• Experience with event-driven systems or technologies such as Kinesis
• Experience with CI/CD pipelines
• Experience modernizing or decoupling legacy services
• Experience working with advertising technology, campaign management, or digital media platforms
• Experience supporting production systems and troubleshooting issues across multiple interconnected services

What You’ll Be Working On

The team owns more than ten services and components supporting the advertising ecosystem. Current initiatives include improving campaign trafficking and filtering capabilities, modernizing event infrastructure, migrating functionality to GraphQL, improving CI/CD processes, and enhancing the overall user experience.

You’ll join a full-stack engineering environment where engineers share responsibility across frontend and backend development. The workload is approximately balanced between the two areas, although there is currently a slightly greater need for strong backend Java expertise.