Senior Fullstack Engineer

Job Description

Senior Fullstack Engineer, Pune

We’re looking for a passionate Senior Full Stack Engineer who not only writes solid, production-grade code, but also thrives on solving real-world problems at scale. You are excited about building modern, scalable web applications that serve thousands of users and power AI-driven insights.
You’ll act as a technical leader within your squad—guiding design decisions, promoting high engineering standards, and contributing directly to the development of performant and user-friendly data-intensive applications. You’re not tied to one specific language or tool, but instead bring a polyglot mindset and a deep eagerness to learn, coach, and grow alongside your peers.
Our platform sits at the intersection of UI/UX, complex analytics, and AI/ML infrastructure—and you’ll be instrumental in ensuring that our user interfaces, APIs, and services meet the highest standards of performance, maintainability, and usability.

Responsibilities

• Lead the development and evolution of full-stack applications within a microservices architecture that power predictive insights and forecasts.
• Write and optimise complex SQL queries (PostgreSQL, BigQuery) to support fast, data-heavy UI interactions with large datasets.
• Build performant, scalable, and elegant user interfaces using React or similar frontend frameworks.
• Design and develop RESTful or GraphQL APIs that power web applications and connect to backend data services.
• Collaborate with data scientists, engineers, and product managers to translate business problems into robust technical solutions.
• Review designs and code to ensure performance, security, and maintainability across the stack.
• Champion best practices in code quality, CI/CD, testing, and agile delivery—ensuring the team delivers features that scale both technically and in value.
• Guide and mentor other engineers by sharing knowledge, pair programming, and leading by example.

Qualifications

• 7+ years of experience building software applications, with significant experience across both frontend and backend systems
• Strong proficiency in JavaScript and TypeScript
• Deep experience building modern, responsive UIs using React
• Expertise in designing and building high-performance APIs using Node.js, Python, Java, or similar languages
• Proven ability to write performant SQL queries, especially when working with large datasets (PostgreSQL, BigQuery)
• Familiarity with cloud-based architectures and the ability to deploy and operate services on GCP (or similar cloud providers)
• Experience working within CI/CD pipelines, Git-based workflows, and agile development methodologies
• A collaborative mindset, and a desire to lead by example, mentor junior engineers, and influence across teams
• Passion for problem-solving, debugging, performance tuning, and continuously improving engineering quality and team velocity

Good to have

• Worked with large-scale platforms or SaaS products with significant user traffic or data throughput.
• Exposure to event-driven architectures
• Experience building internal tools or platforms used by data scientists and ML engineers.
• Familiarity with data pipelines, analytics tooling, or integrating AI/ML outputs into frontend applications.

Benefits:

• A highly collaborative environment solving impactful forecasting and pricing problems across global markets.
• Work with cutting-edge tools and a modern tech stack, fully hosted on Google Cloud Platform.
• Continuous learning through access to top-tier engineering peers, training programs, and mentorship opportunities.
• Great compensation and performance-linked bonus plans.
• Flexible hours, remote-first culture, and support for work-life balance.

Additional Information

Our Benefits

• Flexible working environment
• Volunteer time off
• LinkedIn Learning
• Employee-Assistance-Program (EAP)

About NIQ

NIQ is the world’s leading consumer intelligence company, delivering the most complete understanding of consumer buying behavior and revealing new pathways to growth. In 2023, NIQ combined with GfK, bringing together the two industry leaders with unparalleled global reach. With a holistic retail read and the most comprehensive consumer insights—delivered with advanced analytics through state-of-the-art platforms—NIQ delivers the Full View™. NIQ is an Advent International portfolio company with operations in 100+ markets, covering more than 90% of the world’s population.

For more information, visit NIQ.com

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Our commitment to Diversity, Equity, and Inclusion

NIQ is committed to reflecting the diversity of the clients, communities, and markets we measure within our own workforce. We exist to count everyone and are on a mission to systematically embed inclusion and diversity into all aspects of our workforce, measurement, and products. We enthusiastically invite candidates who share that mission to join us. We are proud to be an Equal Opportunity/Affirmative Action-Employer, making decisions without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability status, age, marital status, protected veteran status or any other protected class. Our global non-discrimination policy covers these protected classes in every market in which we do business worldwide. Learn more about how we are driving diversity and inclusion in everything we do by visiting the NIQ News Center: https://nielseniq.com/global/en/news-center/diversity-inclusion