Source Job

$220,000–$300,000/yr
Global

  • Build and evolve sophisticated, multi-stage retrieval and ranking systems.
  • Bridge applied ML/AI with production backend engineering to deliver performant and intelligent algorithms.
  • Scale recommendation systems to support growth and increasingly complex marketplace dynamics.

Golang Node.js Python Postgres MongoDB

20 jobs similar to Staff Backend Engineer, Recommender Systems

Jobs ranked by similarity.

$125,235–$150,690/yr
North America Unlimited PTO

  • Lead architecture and system design for high-scale, member-facing systems, making thoughtful tradeoffs between velocity, reliability, and long-term maintainability
  • Drive complex, cross-team initiatives from idea through execution, ensuring delivery of measurable business impact
  • Partner cross-functionally with Product, Design, Data, and other Engineering teams to shape roadmaps and align technical strategy with company goals

MasterClass is a streaming platform where the world’s best come together so anyone, anywhere, can access and be inspired by their knowledge and stories. They are a remote-first workforce with collaborative work spaces in San Francisco and Kitchener, Ontario, and employees in several U.S. states.

$217,000–$303,900/yr
US

  • Work with the team to select, scope, and drive high-velocity experiments and features that directly impact advertiser retention and revenue.
  • Define the technical roadmap for full campaign lifecycle support, designing systems that can intelligently guide advertisers through optimization, reporting, and reactivation.
  • Maintain a hands-on focus, executing on strategies to create world-class experiences for SMBs.

Reddit is a community of communities built on shared interests, passion, and trust, and is home to open and authentic conversations. With 100,000+ active communities and approximately 121 million daily active unique visitors, Reddit is one of the internet’s largest sources of information.

Europe

  • Building scalable systems in an innovative environment.
  • Shaping the value we deliver to our customers.
  • Making architectural decisions that will hold up as we grow.

Dragonboat is a leading provider of an AI platform for Strategic Product and Portfolio Management. They are a venture-backed, fast-growing SaaS startup with remote teams in Portugal and the US.

Latin America

  • Design and implement core systems for AI-powered matchmaking, integrating frontend, backend, and agentic workflows.
  • Own architectural decisions and collaborate on long-term platform direction.
  • Lead planning, scoping, and execution of feature initiatives in partnership with product management.

Upwork is the world’s work marketplace, serving everyone from one-person startups to over 30% of the Fortune 100. They provide a powerful, trust-driven platform that enables companies and talent to work together. Last year, more than $3.8 billion of work was done through Upwork.

Europe

  • You will be responsible for owning and delivering quarterly goals for your team.
  • You will support your peers and stakeholders in the product development lifecycle.
  • You will proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. They are a remote-first company with competitive benefits.

$100,000–$135,000/yr
Canada

  • Design, build, and maintain backend API services that power our e-commerce platform.
  • Own features end-to-end, from understanding the problem through implementation, testing, release, and production support.
  • Ship code continuously through our delivery pipeline, with proper review, testing, and documentation at every step.

Elastic Path's mission is to break through barriers that prevent commerce leaders from delivering extraordinary shopping experiences by making Composable Commerce accessible to all brands. They are a remote-first company focused on a culture built on mutual respect, curiosity, honesty, and the belief that everyone’s voice matters.

$98,000–$210,000/yr
Canada Ireland Netherlands UK US Unlimited PTO

  • Implement and iterate on backend features in the Rust-based Knowledge Graph service.
  • Help maintain integrations between Knowledge Graph and the rest of the GitLab platform.
  • Contribute to system design discussions by proposing options, raising questions, and documenting decisions.

GitLab is the intelligent orchestration platform for DevSecOps. More than 50 million registered users and more than 50% of the Fortune 100 trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: they embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact.

  • Own Technical Excellence: Define and drive the architecture, design patterns, and engineering standards for the feature store platform.
  • V2 Implementation: Assist and execute the next generation of our feature store—building for scale, low-latency serving, and enterprise-grade reliability.
  • Guide Product Roadmap: Partner with Product and leadership to help shape the technical roadmap.

Redis created the product that runs the fast apps our world runs on. At Redis, people work with technology and build it, tell its story, and sell it to 10,000+ worldwide customers creating a faster world with simpler experiences.

US Canada

  • 5+ years of backend experience with technologies such as Python, GCP, MySQL, and Redis.
  • Demonstrated ability to design and implement features within strict external platform or API requirements.
  • Communicate clearly across remote channels and contribute thoughtfully to discussions and reviews.

Recharge is the subscription platform for innovative brands. They help merchants deliver seamless customer experiences. Recharge is known for its relentless product innovation and focus on ease of use, helps merchants drive customer retention and revenue growth and currently employs over 20,000 brands globally.

Global

  • Contribute to architecture and development across Agency Module and Billing systems.
  • Design and implement robust backend APIs for subscription management and payments.
  • Deliver performant frontend experiences for agency onboarding and billing dashboards.

HighLevel is an AI powered, all-in-one white-label sales & marketing platform that empowers agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth. With over 1,500 team members across 15+ countries, they operate in a global, remote-first environment.

Europe

  • Develop a distributed platform with high availability and scalability.
  • Participate in code reviews and resolution of client tickets.
  • Be an active developer and coder in our team.

Mediasmart is part of the Affle group, a global adtech company that completed its successful IPO in India in 2019 and has been growing profitably since. Our culture and values include being a generous team player, loving curiosity, and collaborating to build a smart company.

Global Unlimited PTO

  • Shape and scale GitLab CI backend infrastructure to improve performance, reliability, and usability.
  • Design and implement AI-powered features for Agentic CI, including agents and LLM-backed tooling.
  • Own and drive measurable performance improvements across CI systems.

GitLab is the intelligent orchestration platform for DevSecOps. They enable organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. Their high-performance culture is driven by their values and continuous knowledge exchange, enabling their team members to reach their full potential while collaborating with industry leaders to solve complex problems.

$217,000–$303,900/yr
US

  • Lead the complete lifecycle of features for ads lift measurement products.
  • Rigorously evaluate campaign performance by expanding core products.
  • Build automated data validation, randomization/holdout integrity checks, imbalance diagnostics, and continuous verification/backtesting.

Reddit is a community of communities built on shared interests, passion, and trust, and is home to open and authentic conversations. With 100,000+ active communities and approximately 121 million daily active unique visitors, Reddit is one of the internet’s largest sources of information.

US

  • Architect and evolve internet-scale systems with performance, reliability, and scalability.
  • Lead the technical direction for Ruby on Rails and React applications across the platform.
  • Design clean, extensible APIs and modern front-end architectures that deliver fast, intuitive user experiences.

OfficeSpace is the AI workplace management platform that helps teams plan, connect, and perform in the modern workplace. They are a performance-based, PE-backed company, that hires based on merit and a willingness to do what it takes to succeed long-term.

$193,600–$253,000/yr
US

  • Lead architecture, system design and engineering efforts for high-scale, data-intensive B2B systems supporting eligibility, billing, marketing, and file ingestion.
  • Design and implement batch and real-time processing architectures that are reliable, observable, and performant.
  • Drive efforts in database performance optimization, schema design, and long-term scalability planning across multi-terabyte PostgreSQL and other persistent stores.

Omada Health is a digital care provider that empowers people to achieve their health goals through sustainable behavioral change. Their multi-condition platform treats diabetes, hypertension, prediabetes, musculoskeletal, and GLP-1 management.

Global

  • Design, build, and maintain backend services that power mission-critical platform functions within your team’s scope
  • Optimize data models and system performance to improve scalability, reliability, and maintainability
  • Work across APIs, databases, and deployment systems to deliver cohesive, production-ready solutions

Onebrief provides AI-powered collaboration and workflow software tailored for military staffs, enhancing speed, intelligence, and efficiency. Founded in 2019, Onebrief boasts a team of veterans and technologists, backed by $320m+ from investors, valuing the company at $2.15B.

US Unlimited PTO

  • Design, build, and scale technology and intelligent systems for Clover Care Services.
  • Translate operational complexity into scalable systems that improve efficiency and care coordination.
  • Partner with Product to build foundational infrastructure that enables scalable clinical impact.

Clover Health is reinventing health insurance by combining the power of data with human empathy to keep their members healthier. They've created custom software and analytics to empower their clinical staff to intervene and provide personalized care to the people who need it most. They are an Equal Opportunity Employer, and their employees are people with different strengths, experiences and backgrounds, who share a passion for improving people's lives.

US Europe

  • Full-cycle technical recruiting for backend engineering and AI/ML roles.
  • Building talent pipelines across multiple requisitions and skillsets.
  • Partnering with hiring managers for calibration and feedback.

Employer.com is revolutionizing the hiring landscape by streamlining recruitment processes and enhancing the job search experience. They work alongside recruiter.com, BountyJobs, Bench Accounting, and Before You Apply, providing workplace solutions.

$187,000–$283,800/yr
US

  • Design, build, and ship full-stack growth experiments end-to-end
  • Improve key metrics across acquisition, activation, engagement, and monetization
  • Analyze experiment results and iterate quickly based on data

Calendly's product helps millions of people with scheduling. They have a product growth team and a collaborative culture.

$125,000–$175,000/yr
Canada

  • With support, break down projects into tasks, deliver in phases, and collaborate for timely delivery.
  • Support peers and stakeholders by collaborating with product management, design & analytics.
  • Support operations and availability by creating/monitoring metrics and supporting on-call efforts.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The company is remote-first with employees working almost anywhere within the country of employment and focuses on providing a simple and transparent pay structure.