Full-Stack Senior Software Engineer

RADICL

13d•Hybrid

About The Position

As a RADICL Senior Full-Stack Software Engineer, you will: lead the design and delivery of scalable, secure, cloud-native systems powering RADICL’s cybersecurity platform. This role owns features end-to-end—from architecture and backend services to frontend user experience— while helping shape engineering standards, system direction, and technical strategy. You will operate as a senior technical contributor responsible for building resilient distributed systems, maintaining the highest-quality engineering standards, and driving execution across the full application stack. If the above excites you, RADICL Defense is seeking high performing, motivated individuals to join our mission. As an early member, you will work closely alongside an experienced founding team and realize the life-changing experience of building a company. You will work with the latest technologies in software, cybersecurity, and cloud and will have a significant impact on the formation of our platform and offering. About You You enjoy fast-paced environments, bring a positive attitude, and excel at getting things done. You enjoy being part of a high performing team and are also able to self-direct and self-start. You consider yourself to be top tier talent and are eager to help others raise their game. You enjoy working with customers, are an excellent communicator, and able to engage and interact with people of various backgrounds and skill levels. You want your work to have meaning, to be important. You want to be part of creating something great. About the Workplace At RADICL, we prioritize our culture and believe the strongest teams are built through daily, side-by-side collaboration and experiential sharing. We also value individual freedom and flexibility. For this reason, we have a hybrid work model. As a team, we are in office M/W/Th with work-from-home on Tuesdays and Fridays. For remote positions, periodic travel to Boulder will be expected to participate in company events and meaningful side-by-side collaboration opportunities. RADICL offices are in downtown Boulder, Colorado with easy-to-access employee parking provided by the company. We offer comprehensive, competitive benefits including health, dental, and vision as well as 401K and a responsible PTO plan. We encourage motivated, talented, mission-oriented, and fun people to apply. Let’s do this!

Requirements

7+ years of professional software engineering experience
Strong full-stack development experience using React, API (NodeJS), and a relational database
Expert proficiency in TypeScript, Golang, or comparable modern languages
Production experience with cloud platforms (AWS, GCP, or Azure)
Deep understanding of API design, system scalability, and performance optimization
Experience with containerization and orchestration (Docker, Kubernetes)
Strong experience with Git workflows and modern SDLC practices Excellent written communication skills

Nice To Haves

Experience building security, compliance, or mission-critical platforms
Familiarity with PostgreSQL, Kafka, Elasticsearch, or large-scale data systems
Experience with GitHub Actions or modern CI/CD tooling
Infrastructure-as-Code experience (Terraform, Ansible)
Experience operating high-availability SaaS platforms
Background in cybersecurity, defense, or regulated environments Startup or high-growth company experience

Responsibilities

Build and evolve modern frontend applications using TypeScript, React and NodeJS
Architect, design, and implement scalable backend services using Golang
Own features end-to-end across API, service, infrastructure, and UI layers
Lead technical design discussions and influence system architecture decisions
Improve platform scalability, observability, reliability, and security posture
Collaborate cross-functionally with product, security, and operations teams
Opportunity to mentor engineers and provide technical leadership across the team
Contribute to incident response, performance tuning, and production troubleshooting
Maintain architectural documentation and technical decision records