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[Remote] Software Engineer, Platform

Remote, USA Full-time Posted 2026-06-21

Note: The job is a remote job and is open to candidates in USA. Smartleaf is a Boston-based investment portfolio rebalancing service handling over $90 billion in assets. They are seeking a Software Engineer to own problems end to end and ensure the correctness of complex data models while working closely with product management and users to design effective solutions.

Responsibilities

  • Make sure the right things happen in the right order, and that edge cases are handled correctly so that financial advisors can trust what they’re seeing
  • Spend time figuring out what correctness means when multiple actions hit a portfolio at once
  • Distill complexity into a clear experience that allows financial advisors to understand the impact of their choices and present the best possible information to their clients
  • Work closely with the product management team and users to gather requirements and design solutions
  • Participate in the support rotation and see firsthand how users are interacting with the system
  • Explain issues, potential solutions, and tradeoffs in ways that make sense to a variety of stakeholders
  • Build internal tools or pick up new skills to achieve goals

Skills

  • 2-6+ years of experience building production web applications
  • Demonstrated ability to reason about systems with complex domain logic and concurrent, order-sensitive state
  • Strong understanding of computing fundamentals, particularly multiprocessing and multithreading considerations
  • Proficiency in Ruby on Rails or similar MVC frameworks
  • Strong SQL skills: comfortable writing complex multi-table queries, understanding query plans, and reasoning about data integrity
  • 1+ years of daily experience working in a Linux environment: strong familiarity with common command-line utilities and Unix process management; comfortable with bash scripting
  • Are able to dive into unfamiliar codebases and quickly build up working knowledge of how multiple components interact
  • Enjoy taking a cloud of complex problems and making them clear and straightforward

Company Overview

  • Simartleaf is a financial service business that offers portfolio management solutions. It was founded in 1999, and is headquartered in Cambridge, Massachusetts, USA, with a workforce of 11-50 employees. Its website is http://www.smartleaf.com/.
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