Senior Full-Stack Engineer, Platform

Censys; Canada; Remote; CAD 188,000 - 251,000; Full time

Job summary

A tech firm specializing in internet intelligence is seeking a Senior Full-Stack Engineer to develop scalable microservices and design robust APIs for their SaaS product. The role requires expertise in backend technologies like Golang and Python, along with frontend skills in React. Ideal candidates thrive in dynamic environments and are eager to drive innovation. Benefits include competitive salary and a range of health perks.

Benefits

401k match

Health insurance

Vision insurance

Dental insurance

Equity options

Qualifications

• 4+ years of professional experience building distributed web applications, APIs, and frontends.
• Expertise building backend microservices in Golang.
• Desire to improve test coverage and increase code maintainability.

Responsibilities

• Develop scalable microservices and design robust APIs.
• Integrate with internal and external APIs.
• Own the full development lifecycle including deployment and monitoring.

Skills

Backend engineering skills in Golang

Experience with Python (FastAPI)

Proficiency in React

Knowledge of retrieval-augmented generation (RAG)

Understanding of embedding models

Tools

Docker

Job description

Overview

Censys’ mission is to be the one place to understand everything on the internet. We deliver real-time Internet intelligence and actionable threat insights to global governments, and to more than 50% of the Fortune 500 and leading threat intelligence providers worldwide.

Location: This position is remote within the United States or Canada.

Role Summary

Censys is seeking a high-caliber Senior Full-Stack Engineer with a strong backend focus to help build and evolve our next-generation Censys Platform. In this role, you’ll develop scalable microservices and design robust APIs that power our SaaS product. While your primary focus will be backend systems, you’ll also contribute to frontend development to deliver intuitive, crafted user experiences. You’ll work closely with product and engineering teams to translate complex requirements into well-architected, maintainable software that powers critical security insights.

Your contributions will help users explore and understand the global Internet, enabling them to uncover threats and better protect their organizations.

What You’ll Do

• Full-Stack AI Development
• Expert backend engineering skills in Golang
• Strong experience with Python (FastAPI) for backend API development
• Proficiency in React and frontend frameworks for integrating AI-powered UI features

Partner with Product, Design, and Frontend Engineers to deliver features that solve real customer problems

Design, build, and enhance backend services that power core functionality across the Censys Platform

Integrate with internal and external APIs to support rich, data-driven experiences

Own the full development lifecycle by automating build, test, deployment, and monitoring workflows

Contribute to an iterative development process that emphasizes continuous improvement and rapid feedback

What You’ll Bring

• 4+ years of professional experience building distributed web applications, APIs, and frontends
• Expertise building backend microservices in Golang
• Familiarity with Docker and interest in improving our CI/CD deployment process
• Desire to improve test coverage and increase code maintainability
• AI & LLM Knowledge
• Knowledge of retrieval-augmented generation (RAG), vector search, or LLM fine-tuning
• Understanding of embedding models and AI-driven analytics

This Role Might Be A Good Fit If You...

• You thrive in a fast-paced environment where change is constant, and you are able to navigate with ease and adaptability
• You take ownership of projects and don’t wait for direction—you proactively find ways to move forward
• You believe that to be your best, you need to work alongside the best, and you welcome constructive feedback as part of a growth mindset
• You hold yourself to high standards, striving for excellence in everything you do
• You proactively seek opportunities to go above and beyond, driving innovation, improving efficiency, and enhancing the team's overall output
• Your soft skills are just as strong as your technical expertise—you excel at collaboration and communication, and people look forward to working with you

This Role Might Not Be A Good Fit If You...

• Believe that engineering’s role ends once the code is delivered, rather than throughout the product life cycle
• Don’t value the code review process or resist constructive feedback
• Settle for the status quo and don’t seek improvement
• Prefer to wait for direction instead of taking the initiative
• Don’t enjoy supporting and mentoring your colleagues to foster team growth

Salary range: $135,000 USD to $180,000 USD, plus bonus eligibility and equity.

Benefits are effective on day one and include 401k match, health, vision, dental, and more. See the careers page for details.

Remote status: We are open to remote employees across the continental US and Canada.

EEO Note

We are an equal opportunity employer. We do not discriminate on the basis of any protected status. Inclusion and diversity are core to our culture.