Software Engineer – Platform

Smartleaf

Software Engineer developing investment portfolio management solutions at Smartleaf, ensuring correctness and reliability across complex data models and real-world events.

Posted 5/29/2026full-timeRemote • Massachusetts • 🇺🇸 United StatesJuniorMid-Level💰 $140,000 - $160,000 per yearWebsite

Tech Stack

Tools & technologies

LinuxRubyRuby on RailsSQLUnix

About the role

Key responsibilities & impact

As a member of our platform team, you’ll be at the intersection of domain knowledge, a complex data model and a stream of real-world events.
Make sure the right things happen in the right order, and that edge cases are handled correctly.
Spend a lot of your time figuring out what correctness even means when multiple actions hit a portfolio at once.
Distill this complexity into a clear experience that allows financial advisors to understand the impact of their choices.

Requirements

What you’ll need

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

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account Smartleaf Website LinkedIn All Job Openings 11 - 50 employees Founded 1999 💳 Fintech Fintech
Investment
Wealth Management Smartleaf is a financial technology company that simplifies the management of personalized and tax-optimized investment portfolios. Through its innovative platform, Smartleaf provides wealth management firms with the tools to automate portfolio rebalancing and trading, allowing advisors to focus on client relationships and strategy. The company's services include direct indexing, tax management, and customizable portfolio solutions, enabling firms to deliver high levels of client personalization without increasing operational complexity. Software Engineer – Platform 🔥 2 minutes ago 🏢🏡 Remote – Hybrid 💵 $140k - $160k / year ⏰ Full Time 🟢 Junior 🟡 Mid-level 🧑‍💻 Full-stack Engineer 🦅 H1B Visa Sponsor Linux Ruby Ruby on Rails SQL Unix Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
As a member of our platform team, you’ll be at the intersection of domain knowledge, a complex data model and a stream of real-world events.
Make sure the right things happen in the right order, and that edge cases are handled correctly.
Spend a lot of your time figuring out what correctness even means when multiple actions hit a portfolio at once.
Distill this complexity into a clear experience that allows financial advisors to understand the impact of their choices. 🎯 Requirements
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 Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

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Hard Skills & Tools

Ruby on RailsMVC frameworksSQLmultithreadingmultiprocessingbash scriptingweb applicationsdata integritycomplex domain logicconcurrent state

Soft Skills

reasoningproblem-solvingcommunicationdistillation of complexityunderstanding user experienceattention to detailhandling edge casesorganizational skills