Senior Software Engineer - Core Platform

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer - Core Platform (Ruby/Rails) based in United States. This is a senior engineering role focused on building and scaling foundational platform capabilities for a growing cybersecurity product suite. You’ll own complex projects end to end, from technical design and implementation through testing, deployment, and rollout. The role spans backend, frontend, databases, infrastructure, and external integrations, giving you broad technical ownership. You’ll work primarily with Ruby on Rails while contributing to modern frontend experiences and large-scale platform systems. Your work will directly support critical capabilities such as authentication, onboarding, notifications, APIs, and the overall user experience. You’ll also help shape engineering practices through technical leadership, mentoring, code reviews, pairing, and thoughtful architectural decisions. This is a fully remote environment where strong collaboration, ownership, maintainability, and practical problem-solving are highly valued. Accountabilities Own and drive software projects from conception through engineering design, development, automated testing, deployment, and rollout.Build robust, secure, scalable, and maintainable solutions across the full technology stack, including frontend, backend, databases, and infrastructure.Develop and enhance foundational platform capabilities supporting authentication, onboarding and activation, notifications, APIs, and end-to-end user experiences.Break down complex technical initiatives and defined epics into actionable milestones and user stories that enable efficient team execution.Maintain a high standard for code quality, scalability, reliability, and maintainability through automated testing, code reviews, technical pairing, and sound engineering practices.Contribute to team-level technical solutions, architectural decisions, and new engineering initiatives.Collaborate closely with engineers and cross-functional stakeholders to deliver secure and effective platform capabilities.Mentor, coach, and provide actionable feedback to other engineers, helping strengthen technical skills and overall team effectiveness.Identify opportunities to improve development velocity, system reliability, and engineering workflows through responsible use of AI-assisted development tools.Contribute to the evolution of platform architecture and engineering practices as systems and customer needs scale. Requirements 8+ years of professional experience developing complex and scalable software products.5+ years of hands-on experience with Ruby on Rails, with a strong focus on writing clean, maintainable, and efficient code.Demonstrated full-stack development experience, including JavaScript, CSS, and modern Rails frontend technologies such as Stimulus, Turbo, and Hotwire.Strong knowledge of Linux-based infrastructure, relational and analytical databases such as PostgreSQL and ClickHouse, and integrations with external APIs.Proven ability to take complex epics or initiatives and translate them into clear milestones, actionable stories, and executable engineering plans.Experience working collaboratively in Agile environments, including pairing, code reviews, mentoring, and iterative delivery.Strong problem-solving and analytical skills, with the ability to independently navigate complex technical challenges and make sound engineering decisions.Proactive and responsible approach to AI-assisted software development, with the ability to use AI tools to improve productivity and code quality while maintaining appropriate engineering judgment.Strong communication and collaboration skills, with a demonstrated ability to work effectively within a distributed engineering team.Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent professional experience.Experience with AWS cloud environments is preferred.Experience working within a Ruby on Rails monolith is a plus.Interest in building reusable platform capabilities and improving developer and customer experiences is advantageous.Familiarity or eagerness to work with Tailwind UI is helpful. Benefits $160,000–$190,000 USD annual base salary, plus bonus and equity.Fully remote work environment within the United States.Generous paid time off, including vacation, sick time, and paid holidays.12 weeks of paid parental leave.Comprehensive medical, dental, and vision insurance plans.401(k) with a 5% employer contribution, regardless of employee contribution.Life and disability insurance coverage.Stock options available to all full-time employees.One-time $500 home-office reimbursement for building or upgrading your workspace.Annual allowance for education and professional development.$75 USD monthly digital reimbursement.Access to BetterUp for coaching and personal and professional development.Opportunity to work remotely alongside a distributed engineering organization.Meaningful opportunities to contribute to cybersecurity technology and large-scale platform systems. How Jobgether Works We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team. We appreciate your interest and wish you the best! Why Apply Through Jobgether? Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time. 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