Sr. Software Engineer (PHP, Python and Golang)

About Affinity

Affinity is pioneering new frontiers in AdTech by building privacy-first advertising infrastructure that helps publishers maximize monetization and enables advertisers to reach the right audiences beyond walled gardens. Operating across 10+ markets in Asia, the US, and Europe, with a team of 500+ professionals, Affinity continues to innovate at scale in the global AdTech ecosystem.

Role: Sr. Software Engineer

Location: Mumbai (Malad)

We are seeking a Senior Backend Engineer to design, develop, and maintain high-performance backend systems for products. This role involves building scalable, cloud-native applications, collaborating with cross-functional teams, and integrating AI/ML capabilities into our platforms. The ideal candidate is hands-on, technically strong, and experienced with modern backend architectures.

Key Responsibilities

• Design, develop, and maintain backend services and APIs using PHP. Having experience with Python, and Go will be added advantageous
• Implement cloud-native solutions on GCP, ensuring scalability, reliability, and performance.
• Work on server-side architecture, networking, and high-load system design.
• Manage codebase, version control, and team collaboration using GIT.
• Collaborate with front-end, data, and product teams to deliver integrated solutions.
• Leverage AI/ML coding assist tools to enhance application functionality.
• Troubleshoot and optimize backend performance, database queries, and network interactions.
• Maintain high code quality through testing, code reviews, and adherence to best practices.

Required Skills:

• Bachelors or Masters degree in Computer Science, Engineering, or related field.
• 5+ years of professional experience in backend development.
• Strong programming skills in PHP. Basic understanding of Python and Go.
• Hands-on experience with cloud platforms, preferably GCP.
• Solid understanding of server architecture, networking, and web development principles.
• Experience with version control systems (GIT), Linux terminal.
• Practical experience integrating or leveraging AI/ML coding assist tools in applications.
• Strong problem-solving skills, ownership mindset, and ability to work independently.