Senior Full Stack Engineer

Job not on LinkedIn

October 23

🗽 New York – Remote

Although this job is listed in New York, this company may be open to hiring remote in other states.

💵 $200k - $225k / year

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

🦅 H1B Visa Sponsor

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NewtonX

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B2B • SaaS

NewtonX is a full-service B2B market research company that connects enterprise decision-makers with verified subject-matter experts and actionable insights. Using an AI-driven NewtonX Graph to search a global pool of professionals and a SaaS platform (NewtonX Hub) for transforming raw survey data into analysis, they provide custom quantitative, qualitative, and hybrid research, expert recruitment, and research consulting across numerous industries. NewtonX emphasizes 100% ID-verified samples, fast custom recruiting, and research methodologies like brand & communications, product research, customer segmentation, and market opportunity studies.

51 - 200 employees

Founded 2016

🤝 B2B

☁️ SaaS

📋 Description

• 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

🎯 Requirements

• 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 • 5+ years full-stack engineering experience • 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.

🏖️ Benefits

• Competitive compensation with a total comp range of 200-225k (includes base and annual performance bonus) and equity. • Career advancement and training opportunities. • Excellent medical, dental, and vision insurance. • 401k match with immediate vesting. • Health savings/flexible savings account, and pre-tax commuter benefits. • 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 with a focus on work-life balance. • Good vibes (happy hours, team projects, and retreats).