Full Stack Engineer

Mithrl; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Mithrl in San Francisco is seeking a Full Stack Engineer to build, scale, and evolve a core product used by scientists and technical users. This product-oriented role spans frontend, backend, and system design with ownership from concept to production.

You will contribute to technical direction and architecture while collaborating with product, design, ML, and scientific teams for high-performance software used daily by sophisticated users.

Qualifications

• 7+ years of professional software engineering experience.
• Strong full-stack experience with Python and React in production environments.
• Proficiency with backend frameworks (e.g., Django) for APIs and data-intensive systems.
• Experience building modern frontend apps using React.
• Experience designing GraphQL APIs, including schema design and performance considerations.
• Experience designing scalable databases and data-intensive applications.
• Strong understanding of system design, architecture, and best practices.
• Experience shipping and owning production systems used by real users.
• Ability to operate effectively in fast-paced, ambiguous environments.
• Strong problem-solving skills and a product-oriented mindset.
• Excellent communication and cross-functional collaboration.

Responsibilities

• Design, build, and maintain core product features across frontend and backend.
• Own end-to-end feature development, from requirements to production deployment and iteration.
• Build intuitive user interfaces that abstract complex technical and data workflows.
• Develop scalable backend services, APIs, and data pipelines.
• Collaborate with product, design, ML, and scientific teams to translate user needs into technical solutions.
• Make architectural decisions balancing speed, scalability, reliability, and developer velocity.
• Improve system performance, reliability, and observability as usage and data volumes grow.
• Write clean, maintainable, and well-tested code with high quality standards.
• Mentor engineers and contribute to raising the overall engineering bar.
• Participate in technical planning, code reviews, and ongoing platform evolution.

Skills

Python

React

Django

GraphQL

System design

Production systems

Mentoring

Tools

PostgreSQL

AWS

Docker

Job description

We are hiring a Full Stack Engineer to help build, scale, and evolve a core product used by scientists and technical users. This is a highly product-oriented engineering role with deep ownership across frontend, backend, and system design. You will work closely with product, design, machine learning, and scientific teams to turn complex workflows into intuitive, high-performance software used daily by sophisticated users.

As an engineer, you will contribute not only to execution but also to technical direction, architectural decisions, and engineering standards. You will own features end-to-end—from initial concept through production, iteration, and scale. This role requires strong full-stack fundamentals, a bias toward shipping, and the ability to operate effectively in fast-moving, ambiguous environments.

If you enjoy building real products, thinking deeply about system design and user experience, and taking ownership of critical parts of a growing platform, this role is an excellent fit.

WHAT YOU WILL DO

• Design, build, and maintain core product features across frontend and backend
• Own end-to-end feature development, from requirements to production deployment and iteration
• Build intuitive user interfaces that abstract complex technical and data workflows
• Develop scalable backend services, APIs, and data pipelines
• Collaborate closely with product, design, ML, and scientific teams to translate user needs into technical solutions
• Make architectural decisions balancing speed, scalability, reliability, and developer velocity
• Improve system performance, reliability, and observability as usage and data volumes grow
• Write clean, maintainable, and well-tested code with high quality standards
• Mentor engineers and contribute to raising the overall engineering bar
• Participate in technical planning, code reviews, and ongoing platform evolution

WHAT YOU BRING

Required Qualifications

• 7+ years of professional software engineering experience
• Strong full-stack experience with Python and React in production environments
• Proficiency with backend frameworks (e.g., Django) for building APIs and data-intensive systems
• Experience building modern frontend applications using React
• Experience designing and working with GraphQL APIs, including schema design and performance considerations
• Experience designing scalable systems, databases, and data-intensive applications
• Strong understanding of system design, software architecture, and engineering best practices
• Experience shipping and owning production systems used by real users
• Ability to operate effectively in fast-paced, ambiguous environments
• Strong problem-solving skills and a product-oriented mindset
• Excellent communication skills and ability to collaborate cross-functionally

Nice to Have

• Experience building products for technical or scientific users
• Familiarity with data-heavy, analytics, or ML-enabled platforms
• Experience with cloud infrastructure (e.g., AWS, GCP, Azure)
• Experience mentoring or leading engineers
• Exposure to scientific, biotech, or R&D workflows

WHAT YOU WILL LOVE

• High ownership and impact: Own meaningful parts of a product used by advanced technical users, with direct influence on how they interact with data and AI systems
• Team: Work with a tight-knit, highly skilled group of engineers, scientists, and builders
• Culture: A focus on clarity, consistency, and solving hard problems through disciplined execution
• Speed: Fast iteration cycles with continuous improvement driven by real user feedback
• Environment: In-person, collaborative office setting with high energy