R2026-297 Senior Software Engineer

Agency

Flywheel

Account Management and Growth

Account Management

About Flywheel Flywheel’s suite of digital commerce solutionsaccelerategrowth across all major digital marketplaces for the world’s leading brands. We give clients access to near real-time performancemeasurementand improve sales, share, and profit. With teams across the Americas, Europe, APAC, and China, we offer a career with real impact, endless growthopportunitiesand the support you need to be the best you can be.

The Opportunity In this role, you will support our Perpetua product, which focuses on the seller and SMB market segment within the Flywheel portfolio.

Perpetua provides growth optimization and reporting technology for the world’s smartest eCommerce businesses. Through the platform, brands and sellers create goals based on strategy and rely on Perpetua’s best-in‑class, always‑on optimization to execute tactically. Amazon Ads is a $40B business today and every retailer on the planet is replicating the Amazon playbook, we’vealready transformed the way businesses approach e-commerce and online advertising andwe’reready to continue growing.

As a Senior Software Engineer - Full Stack with Perpetua, you will contribute to our core platform built primarily with Python, Django, React, Type Script, Big Query, and GCP. You will help build scalable systems and intuitive user experiences that power advertising optimization and analytics for thousands of eCommerce brands across Amazon, Walmart, Instacart, and emerging retail media platforms. We are looking for engineers who embrace modern AI-assisted software development practices and can leverage tools such such as Claude Code, and other AI coding assistants to accelerate development while maintaining high engineering standards.

• Build and maintain backend services and APIs using Python and Django, as well as customer-facing applications using React and Type Script.
• Design and implement scalable data pipelines that process terabytes of advertising and commerce data.
• Develop features across the full stack, from data ingestion and processing to intuitive user interfaces and customer-facing functionality.
• Design, build, and optimize data models and analytics workflows using Big Query and cloud‑native technologies.
• Contribute to architecture decisions for distributed systems and modern web applications running on Google Cloud Platform (GCP).
• Collaborate closely with Product, Design, Data Science, and Engineering teams to deliver customer value.
• Use AI‑assisted development tools such as Claude Code, Cursor, and Git Hub Copilot to improve productivity, code quality, and engineering velocity.
• Participate in technical design discussions, RFCs, code reviews, and mentoring of other engineers.
• Continuously improve system reliability, scalability, observability, security, and frontend performance.
• Help establish engineering best practices around AI‑assisted software development.

• 5+ years of professional software engineering experience building and operating production systems.
• Strong experience with Python and modern backend frameworks, preferably Django.
• Strong experience building modern web applications with React and Type Script.
• Experience building scalable cloud applications on GCP.
• Strong understanding of distributed systems, microservices architecture, and event‑driven systems.
• Experience working with large‑scale data platforms and analytics systems, including Big Query or similar data warehouses.
• Proficiency with relational databases (PostgreSQL, MySQL, Cloud SQL) and data modeling.
• Experience designing and consuming RESTful APIs and asynchronous processing systems.
• Practical experience using AI‑powered software development tools such as Claude Code, Cursor, Git Hub Copilot, Windsurf, or equivalent.
• Ability to effectively leverage LLMs for software design, coding, testing, debugging, documentation, and developer productivity.
• Strong understanding of software engineering fundamentals, including algorithms, data structures, OOP, testing, design patterns, and frontend application architecture.
• Experience with CI/CD pipelines, automated testing,…