Senior Software Engineer, Fullstack

We are looking for a Senior Software Engineer to join our team to develop core services within our platform. You will work on a distributed application for building and simulating cybersecurity ranges and construct a training and assessment platform for cybersecurity professionals. Collaboration is key, as you'll work with UX, Product, and Data Science teams, contribute to technical planning and team roadmaps, and participate in regular lunch-and-learns and demos. This role involves balancing maintenance with innovation and solution delivery, as well as supporting and mentoring fellow engineers.
Who you are:
You can work across the stack, whether it's expanding our API or enhancing the frontend
You enjoy solving complex problems & building solutions through collaborative methods
You’re always open for feedback, and are willing to give feedback to your colleagues
You understand that nothing is perfect and there is always room for improvement
You are driven off of goals and team outcomes
You’re focused on the iterative delivery of high-quality code, along with tests and documentation
You’re conscious of scalability, re-usability, but also pragmatic when it comes to trade-offs
What you'll be doing:
Developing core services as part of a distributed application for the construction and simulation of cybersecurity ranges
Building a training and assessment platform for cyber security professionals
Collaborating with teammates across UX, Product, and Data Science domains
Contributing to technical planning and team roadmap decisions
Our Tech Stack:
Typescript, React, Postgres, Kotlin, Kubernetes, Spring Boot
What are the qualifications to apply? To be successful as a Senior Software Engineer, Fullstack you need to have:
Strong bilingual proficiency in English and Spanish skills required across written, virtual, and in-person interactions
Proficient with Typescript and React.js
Proficient with API Design
Proficient with the principles of testing software
Experience with frontend state management libraries (Redux, Zustand, React-Query)
Have production experience developing and operating services at scale
Experience working with remote teams
Nice to have but not required:
4+ years of industry software development experience
Experience with a11y standards
Familiarity with Kubernetes
Familiarity with Cybersecurity and Networking
A bachelor's degree in Computer Science or equivalent experience

We’re proud to offer a competitive and comprehensive package designed to support your well-being, growth, and success:
Compensation. Base salary range: _____, reflecting our confidence in your expertise and impact, with the opportunity for annual bonuses tied to company performance and individual contributions.
Health & Wellness. Comprehensive medical, dental, and vision benefits.
Mental Health Support. Access to company-paid counseling, coaching, and resources for you and your family through Spring Health.
Parental Leave. Paid leave plans to support you and your loved ones during life’s most important moments.
Ownership Opportunities. Equity stock options at hire, with annual performance-based grants—become an invested stakeholder in our shared success.
Referral Rewards. Earn $1,500–$3,500 for every qualified hire through our employee referral program.
Continuous Learning. Access a LinkedIn Learning membership to prioritize your personal and professional development.
Social Connections: Monthly reimbursements for meaningful connections with teammates through our SocialSpace Community.