Senior Software Engineer

Defendify

. Architect, build, and ship features across the cybersecurity platform .

Posted 10/22/2026full-timeRemote • Maine • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in backend services, automation, and systems within a cybersecurity platform, with a strong focus on secure coding practices and production software maintenance. Proficient in collaborating with cross-functional teams and utilizing AI tools for enhanced development workflows.

Highest-signal resume keywords

Go ProgrammingNode.js ProgrammingPostgreSQL Database ManagementSoftware Engineering ExperienceSecurity Best Practices

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend DevelopmentAutomationSystems IntegrationProduction Software MaintenanceSecure CodingTechnical SpecificationTestingObservabilityInfrastructure ManagementAI-Assisted Workflows

Soft Skills

Written CommunicationProblem-SolvingCollaborationTechnical Tradeoff Analysis

Industry Keywords

CybersecurityMonitoringReliabilityCode ReviewArchitectural Decisions

Tech Stack

Tools & technologies

Cyber SecurityJavaScriptNode.jsPostgresGo

About the role

Key responsibilities & impact

Architect, build, and ship features across the cybersecurity platform
Focus on backend services, automation, and systems while contributing across the stack
Build and maintain integrations with external services
Design and deliver secure, well-tested, maintainable code
Investigate and resolve production issues
Participate in on-call support
Strengthen monitoring and reliability
Improve tests, interfaces, observability, and operational simplicity
Participate in architectural decisions, code reviews, and planning
Own features end to end from problem understanding through technical specification, implementation, testing, and production operation
Collaborate with the Director of Engineering, lead, other engineers, and product team
Use AI tools for research, implementation, testing, and review while applying engineering judgment
Contribute to technical design, identify gaps, challenge assumptions, and improve outcomes

Requirements

What you’ll need

5+ years of professional, hands-on software engineering experience designing, building, shipping, and maintaining production software and systems
Strong in at least one of Go or Node.js and willing to work across both
Meaningful experience with relational databases, particularly PostgreSQL
Comfortable with infrastructure and operations, not just application code
Strong written communication and ability to think clearly about technical tradeoffs
Thoughtful approach to security, especially security-adjacent experience
Experience using modern development tools, including AI-assisted workflows
Ability to pick up new languages and systems quickly
Ability to work in the Portland, Maine area or remotely; preference for U.S.-based candidates who can occasionally visit headquarters

Benefits

Comp & perks

Remote-first work environment with in-person, hybrid, or remote options
Flexible hybrid arrangements
Opportunity to work across 13 cybersecurity modules and multiple service layers
Real ownership with work shipped directly to production
AI-augmented development workflows
Infrastructure as code, structured architecture decisions, and a trusted CI pipeline
Work with a proven growth company
Meaningful mission protecting small and midsized organizations
Occasional visits to the Portland, Maine headquarters for collaboration and team activities