About Us

Constructor is the next-generation platform for search and discovery in ecommerce, built to explicitly optimize for metrics like revenue, conversion rate, and profit. Our search engine is entirely invented in-house utilizing transformers and generative LLMs, and we use its core and personalization capabilities to power everything from search itself to recommendations to shopping agents. Engineering is by far our largest department, and we’ve built our proprietary engine to be the best on the market, having never lost an A/B test to a competitive technology. We’re passionate about maintaining this and work on the bleeding edge of AI to do so.

Out of necessity, our engine is built for extreme scale and powers over 1 billion queries every day across 150 languages and roughly 100 countries. It is used by some of the biggest ecommerce companies in the world like Sephora, Under Armour, and Petco.

We’re a passionate team who love solving problems and want to make our customers’ and coworkers’ lives better. We value empathy, openness, curiosity, continuous improvement, and are excited by metrics that matter. We believe that empowering everyone in a company to do what they do best can lead to great things.

Constructor is a U.S. based company that has been in the market since 2019. It was founded by Eli Finkelshteyn and Dan McCormick who still lead the company today.

About the Role

The Platform Solutions team is dedicated to building and maintaining foundational systems that empower all product teams by providing highly reliable and scalable platform services. We focus on infrastructure-level solutions, enabling seamless functionality while abstracting away complexities for developers across the organization. Our work is not tied to specific business logic but rather serves as the backbone for key capabilities such as authentication, rate limiting, and always-on availability.

As a Platform Engineer in the Platform Solutions team, you will design, develop, and optimize custom platform services to ensure our systems are resilient, secure, and performant. Youll collaborate with engineers across the organization to deliver cutting-edge infrastructure solutions that align with business needs and support the growth of our platform.

Proficiency in at least one programming language such as Go (preferred), Java, Python, C# or similar
Hands-on experience with AWS services (e.g., ECS, DynamoDB, S3, Lambda, SQS)
Familiarity with cloud-native system design best practices
Experience with infrastructure-as-code tools like CloudFormation (preferred), Terraform or Pulumi
Understanding of CI/CD pipelines and tools such as GitHub Actions, or CircleCI
Experience with containerization and orchestration tools (e.g., Docker, ECS)
Knowledge of networking concepts, security, and distributed systems
Understanding of web concepts and security, including OAuth, SAML, CORS, Cookies, and HTTP security