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Senior Software Engineer, Full-Stack

United States

ThreeFlow is looking for teammates who are naturally curious and love to ask questions, even when it means questioning industry standards. We cultivate an inclusive culture where everyone can contribute, grow, and feel valued.

We’re excited to add a Senior Full-Stack Engineer to our Apex team, reporting to the Engineering Manager. As a Senior Software Engineer at ThreeFlow, you’ll make meaningful contributions from early on, working on projects that are important to our success as we scale and move forward post-Series C. Our team collaborates to plan and execute engineering projects to develop and improve client-facing features within our application.  

Our tech stack uses a Ruby on Rails RESTful API on the back-end with PostgreSQL and Redis, with RSpec for testing and RuboCop for code style. Our UI stack is Vue.js 3 with Vitest for unit testing and ESLint and Prettier for code style. We use Cypress and Playwright for end-to-end testing across the full stack. All of our data and applications are hosted on AWS, with infrastructure managed via CloudFormation.

AI is a meaningful and growing part of our product; we use Anthropic Claude models via the Anthropic API and AWS Bedrock for structured data extraction, where recall and accuracy are critical, orchestrated via AWS Step Functions and Lambda. It's deliberate, high-stakes work rather than a bolt-on, and our team is close to it.

About the role

  • Collaborate in an agile environment on a team that includes front-end, back-end, QA, and design specialists.

  • Partner with product, design, and other specialists to launch new products, iterate on existing features, and build the best user experiences. 

  • Collaborate with the engineering team to build and revise the API that provides the backbone for our three Vue.js-based UIs: Broker, Carrier, and Underwriting.

  • Build and maintain front-end features across our Vue.js applications, contributing to a shared component library and design system.

  • Scope new initiatives to determine the work effort and turnaround time.

  • Write, test, document, and support efficient, reusable code across the full stack.

  • Participate in design and code reviews.

About you

  • 5+ years of experience building and maintaining highly available web applications, with at least 3 of those years working with Ruby on Rails.

  • 2+ years of recent experience building production UIs with a reactivity-based SPA framework—our stack is Vue.js, and experience with Nuxt or Svelte translates well. React experience is valued, but its reactivity model differs meaningfully from Vue’s; we'll dig into this in the interview, so we encourage you to be specific about your hands-on experience. 

  • Experience with PostgreSQL, with the ability to understand and write efficient queries taking full advantage of Postgres' JSON/B data types.

  • Meticulous attention to detail and excellent problem-solving, analytical, and troubleshooting skills.

  • Comfortable using AI tools in your development workflow, with a strong commitment to understanding and owning everything you ship—we encourage AI-assisted development, but not at the expense of code quality or engineering judgment.

  • Comfortable presenting architectural approaches, recommendations, and decisions to a combination of peers, managers, and non-technical team members, and giving feedback to peers in similar situations.

  • Experience working with Product Managers to break down specifications for larger efforts into stories, provide order-of-magnitude estimates, and take ownership of efforts through to completion.

  • Comfortable working on an agile team and enjoy learning new concepts, processes, and technologies.

  • Strong interest in tying technical solutions to business problems and understanding technology value propositions.

  • Experience working with a component library or design system is preferred. 

  • Familiarity with domain-driven design (DDD) or module-based architecture patterns on the backend is preferred. 

It's a plus if you have:

  • Experience working with AWS and Buildkite.

  • Experience with HIPAA-related data handling.

Please note that immigration sponsorship (H-1B, TN, etc.) is not currently available for this position.

Notice

Scams in which fraudsters impersonate legitimate businesses for personal gain are on the rise and can come in many forms. ThreeFlow doesn’t interview candidates via email, and job offers are only extended by the hiring manager after a thorough interview process involving phone and/or Zoom interviews. Our recruiters only use @threeflow.com email addresses, and we'll never ask you to provide sensitive information like your social security number or bank account details as a part of our interview process or through a PDF form. If you receive a suspicious email regarding a position or job offer with ThreeFlow, please don’t respond. Report it as spam, and forward that email to careers@threeflow.com.

Our (FTE) benefits

  • Competitive salary and equity
  • Comprehensive health benefits for you and your family
  • 401(k) plan
  • Generous paid time off
  • Paid parental leave 
  • Stipend to improve your work from home experience
  • Stipend for learning and development

Our values

ThreeFlow's core values are the foundation of our culture and remain constant as we grow.

  • Constantly push boundaries
    We think beyond what might be easy or obvious when we're problem solving. We get scrappy and creative in front of hurdles.
  • Collaborate enthusiastically
    Our collaboration as a team is our most valuable asset. We’re able to go farther when we act together.
  • Work with respect
    We’re deliberate, honest, and kind with the words and actions we use. We believe people have positive intent with their actions. 
  • Grow together
    We value developing ourselves personally and professionally to achieve our goals. We encourage taking chances and celebrate curiosity.

About ThreeFlow

ThreeFlow is a Benefits Placement System, a new category of enterprise software that allows benefits brokers and insurance carriers to manage the entire placement process in one shared system. We make it easier for carriers to win business and brokers to empower employers with the details they need to make better decisions. By connecting people, systems, and information, we enable easier communication, a quicker process, and better decisions making busy people more productive. Learn more at threeflow.com

ThreeFlow is committed to building an inclusive working environment regardless of gender, sexual orientation, religion, ethnicity, race, education, age, or other personal characteristics. We believe that people do their best work when they can be themselves, and we’re creating an environment to enable them to do just that.

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Please note that immigration sponsorship (H-1B, TN, etc.) is not currently available for this position.

We are only able to hire candidates based in the United States. 

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