Job Title: Senior Staff Software Engineer

Company Name: NewtonX

Job Url: https://jobs.ashbyhq.com/newtonx/463365ed-d5cc-48ae-97a1-ac4d1ac65dfe?utm_source=oRvzlqnB5m&src=LinkedIn&jr_id=69c3b09b94007a2195e0430e

Job Description: About NewtonX

NewtonX is at the forefront of B2B market research, providing AI-powered insights to deliver firsthand data that the world’s leading Investment firms and enterprises use to make multi-million dollar decisions. As we enter the next stage of growth, we’re seeking a Senior Recruiter experienced in hypergrowth B2B startups to manage NewtonX’s end-to-end recruiting strategy and process.

We have partnered with leading organizations like McKinsey, Blackstone, Microsoft, Google, KKR and beyond to equip them with B2B insights to solve pressing business challenges. Our research has been cited by Fortune, Forbes, TechCrunch, Adweek and more.

NewtonX has raised $47m in funding from VCs like Two Sigma Ventures, Third Prime, XFund and Citi Ventures.

About The Role
We are looking for a Senior Staff Software Engineer with deep expertise in React on the frontend and Python/Django on the backend. You’ll help build and scale high-performing applications used by global teams, with a strong focus on delivering an exceptional user experience. As a Senior Staff Engineer, you will own organization-wide technical initiatives.

What We’re Looking For
6+ years full-stack engineering experience

Strong React skills — modern React (hooks, Context API), reusable component libraries, building robust web apps across multiple projects

Strong Python/Django expertise — Django + Django Rest Framework, designing and consuming REST APIs

Solid experience in JavaScript (ES6+), TypeScript, HTML, CSS/SCSS

Experience building scalable systems (race conditions, idempotency, backpressure)

Strong SQL knowledge with relational databases (postgres)

Unit + integration testing mindset (Jest/React Testing Library, pytest/unittest)
Comfortable with Git and Agile workflows

A strong, demonstrable commitment to developing secure software, including the ability to identify, defend against, and mitigate common application security vulnerabilities, especially those related to the OWASP Top 10.

Bonus Skills (Nice-to-Haves)
State management (Redux, Zustand, Thunk)
Responsive design with Material-UI, Bootstrap, or Tailwind

Cloud + infra experience: GCP, Kubernetes, Docker, Terraform
Messaging/queueing systems (Pub/Sub, Kafka, RabbitMQ, SQS)

SOLID design principles

What You’ll Do
Lead development of React-based UIs that are performant, scalable, and user-friendly

Build and maintain Python/Django REST APIs and backend services

Collaborate on architecture, design decisions, and code reviews

Maintain and improve test coverage across the stack

Debug, resolve technical debt, and improve code quality

Contribute to technology/tooling choices and best practices
Mentor teammates and help shape engineering processes

What We Offer
Excellent medical, dental, and vision insurance.

401k match with immediate vesting.

Generous Paid time off: vacation, holidays, sick, and parental leave.

A diverse, collaborative, and positive culture where we invest in and celebrate each other’s success.

Flexible work environment where we work hard but have fun (happy hours, team projects, and retreats).

NewtonX is proud to be an equal opportunity workplace. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity/expression, age, status as a protected veteran, status as an individual with a disability, or any other applicable legally protected characteristics.