Senior Software Engineer (Ruby on Rails)

Workstream; San Francisco (CA); On-site; USD 100,000 - 150,000; Full time

Benefits offered by this job

Competitive salary

Equity

Health coverage

401K plan

Learning stipend

Flexible PTO

Office amenities

Job summary

Workstream is a mission‑driven company delivering an all‑in‑one HR, payroll, and hiring platform for the hourly workforce. We build cloud‑based services that scale to millions of users and operate in a hybrid office model in San Francisco with strong emphasis on cross‑functional collaboration.

The Senior Software Engineer will own backend systems, collaborate with PMs and engineers, and drive high quality through TDD and CI/CD.

Qualifications

• Proficiency in Ruby on Rails or other backend languages.
• Experience building scalable, high‑availability systems.
• Strong knowledge of SQL/NoSQL databases.
• Experience with CI/CD and test‑driven development (TDD).
• Cloud experience with AWS.

Responsibilities

• Develop backend services and APIs.
• Collaborate with Product Managers and engineers to deliver features.
• Implement test‑driven development to ensure high quality software.
• Design and reason about distributed systems and data stores.

Skills

Ruby on Rails

Golang

Node.js

Python

CI/CD

TDD

English communication

Cloud AWS

Tools

PostgreSQL

MongoDB

Redis

Job description

Senior Software Engineer (Ruby on Rails)

Workstream is a mission-driven company building the all-in-one HR, payroll, and hiring platform for managing the hourly workforce. There are 2.7 billion hourly workers, making up 80% of the global workforce, but this market has been heavily underserved by technology and deserves better. Workstream has been purpose‑built for the hourly workforce from day one so that these businesses and their employees can thrive.

Our customers include leading brands from multiple sectors, including Burger King, Carl's Jr./Hardee's, IHOP, KFC, and Culvers. We are a high growth series B company and quickly expanding our product portfolio to deliver on our vision. We are backed by legendary VCs and industry experts like Founders Fund, BOND, and Coatue.

In addition to our core business, Workstream is home to a small, fast-moving Robotics team focused on advancing the next generation of artificial intelligence and robotics. We partner with a leading AI and robotics company to produce high-quality, large-scale egocentric (first‑person) video datasets that help train advanced AI models.

Our Robotics team develops scalable data collection and annotation pipelines that enable the efficient creation of high-quality training datasets, helping AI systems better understand human actions, environments, and everyday interactions. We're also building a new category of connected hardware designed to operate reliably throughout the day in thousands of homes and businesses. By combining cutting‑edge data collection, automation, and hardware innovation, this team is helping shape the future of intelligent systems and real‑world AI applications.

Grow With Us

We are a team from UC Berkeley, Cornell, SJTU, Cambridge, NUS, with broad industry experiences from Tencent, Alibaba, Amazon, ByteDance, and more. Our engineering team is composed of passionate, driven, and talented engineers who focus on building and innovating cloud technology solutions that empower local businesses to thrive and better serve the deskless workforce in their communities. We are seeking a talented Senior Engineer to join our growing engineering team.

This is a full‑time, hybrid position with 2 to 4 days a week in‑office to support close cross‑functional collaboration.

Day In The Life

• You are a seasoned Software Engineer with a strong background in application development.
• Work closely with Product Managers, Engineering Managers, and peer engineers to deliver well‑scoped product features.
• You advocate for and practice test‑driven development (TDD) to ensure the delivery of high‑quality, reliable software.
• Your technical skills are complemented by your ability to communicate effectively in English, both verbally and in writing.

Who You Are

• Proficiency in at least one of the following languages: ruby on rails, golang, node.js, python, with experience in developing high‑performance and high‑availability backend systems. Ruby on rails is preferred.
• Strong foundation in programming principles and design patterns.
• Experience with building scalable systems and test driven CI/CD commitment to quality software development.
• Experience with SQL and NoSQL databases, such as PostgreSQL or MongoDB, have comprehensive understanding of the decision‑making process between SQL and NoSQL databases.
• Knowledge of caching mechanisms such as Redis or Memcached.
• Familiarity with cloud platforms such as AWS.
• Demonstrated experience in designing distributed systems with a holistic perspective.
• Keep up with the latest technological trends and continuously improve productivity.
• Bilingual in English and Chinese preferred.

Nice To Have

• Experience with NextJS or other front end technologies.

What We Offer

• A mission‑driven and value‑based company dedicated to empower deskless workers and local businesses.
• An early employee opportunity at a Series B hyper‑growth startup; work with the founding team and industry veterans to accelerate your career.
• Competitive salary and equity.
• Comprehensive health coverage: medical, dental, and vision. We pay 95% of your premiums for our employees and 85% for dependents.
• In‑office amenities and stocked kitchen.
• 401K Plan.
• Learning/development stipend.
• Flexible PTO.

Salary Range

In compliance with the California Pay Transparency Law, the base salary range for this role is between $100,000 to $150,000 in San Francisco. This range is not inclusive of our discretionary bonus or equity package. When determining a candidate’s compensation, we consider a number of factors including skillset, experience, job scope, and current market data.

Workstream provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

We are committed to the full inclusion of all qualified individuals.