Senior Fullstack Engineer

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Abusix, Inc.

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2009

🔒 Cybersecurity

☁️ SaaS

🤝 B2B

💰 $1.3M Seed Round - Abusix on 2013-11

Cybersecurity • SaaS • B2B

Abusix, Inc. is a cybersecurity company that provides real-time threat intelligence and network/email abuse management through its Guardian SaaS platform. It offers commercial blocklists, abuse reporting tools, and operational security services to help ISPs, mail providers, data centers and enterprises detect and mitigate spam, phishing, malware, ransomware and other network abuse. Abusix focuses on B2B customers, integrating threat data and automation into security workflows to reduce false positives and speed incident response.

📋 Description

• Review pull requests across the team to maintain code quality and consistency — provide opinionated, substantive feedback that raises the technical bar and unblocks teammates quickly. • Build backend services across all our products to deliver reliable, production-grade features — writing code that handles high request volumes without flinching. • Lead technical design discussions to bring the team to the best solution — contributing senior judgment that shapes architecture decisions and prevents costly wrong turns. • Investigate complex, hard-to-diagnose problems to become the team's go-to expert — turning ambiguous incidents into clear root causes and lasting fixes. • Mentor engineers through pairing, reviews, and design conversations — helping them level up sustainably and feel supported in a fast-moving environment. • Experiment with AI-assisted development tools to identify what actually works for the team — then roll out proven workflows that make everyone measurably more productive.

🎯 Requirements

• Solid backend engineering depth — you've built and operated production systems at scale and know what it takes to keep them reliable. • Hands-on experience with agentic coding and AI-assisted development — you've already integrated these into how you work, not just experimented with them. • A sharp, opinionated approach to code reviews — you ask hard questions, push for clarity, and make it count for the person on the other end. • A genuine mentorship instinct — you invest in the people around you, not just the codebase. • Senior engineering judgment — you can lead a design discussion, spot the tradeoffs others miss, and help a team land on the right call. • Remote-first mindset with the self-direction to thrive in an async, distributed team. • Exposure to cybersecurity, high-throughput data pipelines, or event-driven architectures is a bonus. • Fluent English — clear written and verbal communication across a fully remote, international team.

🏖️ Benefits

• Fair compensation according to your location. • Meaningful ESOP — you share in what we build together. • Additional location-based benefits (e.g. medical, dental, vision, pension, 401k where applicable). • Annual learning and development budget to keep growing. • Budget for your remote workplace setup or a co-working space.