About Us
Constructor is reimagining search and discovery for ecommerce - and we're not just talking incremental improvements. Our entirely in-house search engine, powered by transformers and generative LLMs, is designed to directly optimize critical metrics like revenue, conversion, and profit. We're so confident in our technology that we've literally never lost an A/B test against competitive solutions. Engineering is our powerhouse, and we're laser-focused on staying at AI's bleeding edge.
Our platform isn't just impressive on paper - it handles over 1 billion queries daily across 150 languages and nearly 100 countries. Major players like Sephora, Under Armour, and Petco trust us to power their search experiences.
We're a team of problem-solvers who genuinely care about making life better for our customers and each other. Empathy, openness, curiosity, and continuous improvement aren't just words - they're how we operate. We believe that when everyone does what they do best, magic happens.
Constructor has been pushing tech boundaries since 2019, founded by Eli Finkelshteyn and Dan McCormick, who continue to lead our vision.
The Team
Our ML Recall team doesn't just deliver incremental improvements - we drive measurable KPI gains in search that translate to real user satisfaction. We're obsessed with building transparent, reproducible, and scalable data workflows that give customers real visibility and trust. We manage critical high-load services, guaranteeing rock-solid availability, lightning-fast latency, and performance at massive scale. Our culture is collaborative and curiosity-driven, where every team member can genuinely shape the future of search.
Challenges you'll tackle
- Build, deploy, and maintain our search services, including I/O-bound web services, CPU- and GPU-bound workloads, and data services
- Develop using AWS CloudFormation, AWS CDK, Jenkins, and GitHub Actions
- Optimize system performance - particularly for scaling large ML models efficiently
- Maintain and enhance our observability stack, including tools like Prometheus, Grafana, PagerDuty, and AWS CloudWatch
- Collaborate with both technical and non-technical stakeholders to design and evolve search functionality
- Contribute to broader ML improvements across the platform
Requirements
- Excellent communicator with a passion for performance optimization
- Excited to build scalable ML platforms and practical search systems
- Strong proficiency in Python
- Proven experience designing, developing, and maintaining high-load, distributed, real-time services
- Demonstrated experience setting up and improving CI/CD pipelines
- Hands-on experience with cloud platforms (AWS preferred) and Infrastructure as Code (e.g., Terraform, CloudFormation)
- Proficiency with big data technologies across the end-to-end ML product lifecycle
- Solid experience in server-side web service development and API design
What can help to stand out
- Experience with Rust or another low-level programming language
- Deep knowledge of data structures, algorithms, and their trade-offs
Benefits
- 🏝️ Unlimited vacation time - we strongly encourage all of our employees take at least 3 weeks per year
- 🌎 Fully remote team - choose where you live
- 🛋️ Work from home stipend! We want you to have the resources you need to set up your home office
- 💻 Apple laptops provided for new employees
- 🧑🎓 Training and development budget for every employee, refreshed each year
- 👪 Maternity & Paternity leave for qualified employees
- 🧠 Work with smart people who will help you grow and make a meaningful impact
- 💵 This position has a base salary range between $80k and $120k USD. The offer varies on many factors including job related knowledge, skills, experience, and interview results.
- 🎉 Regular team offsites to connect and collaborate
Diversity, Equity, and Inclusion at Constructor
At Constructor.io we are committed to cultivating a work environment that is diverse, equitable, and inclusive. As an equal opportunity employer, we welcome individuals of all backgrounds and provide equal opportunities to all applicants regardless of their education, diversity of opinion, race, color, religion, gender, gender expression, sexual orientation, national origin, genetics, disability, age, veteran status or affiliation in any other protected group.
Studies have shown that women and people of color may be less likely to apply for jobs unless they meet every one of the qualifications listed. Our primary interest is in finding the best candidate for the job. We encourage you to apply even if you don't meet all of our listed qualifications.
