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:

Bachelor’s or Master’s 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.