Senior Full Stack Software Engineer, Quote Engine

**About Command\|Link** Command\|Link is a global SaaS Platform providing network, voice services, and IT security solutions, helping corporations consolidate their core infrastructure into a single vendor and layering on a proprietary single pane of glass platform. Command\|Link has revolutionized the IT industry by tackling the problems our competitors create. In recognition for our unprecedented innovation and dedication, Command\|Link was recognized as the SD\-WAN Product of the Year, ITSM Visionary Spotlight, UCaaS Product of the Year, NaaS Product of the Year, Supplier of the Year, and the AT\&T Strategic Growth Partner. Command\|Link has built the only IT platform for scale that solves ISP vendor sprawl and IT headaches. We make it easy for our customers to get more done, maximize uptime and improve the bottom line. Learn more about us here! **This is a 100% remote position.** **About Your New Role** We’re seeking a Senior Software Engineer to help drive the next evolution of our 13\-year\-strong Quote Engine—a mission\-critical system powering our quoting and pricing operations. This is a high\-impact opportunity to build and ship features in a complex, high\-throughput environment while modernizing a battle\-tested platform for the next decade. You’ll work closely with product and engineering peers to design and deliver production code that scales, focusing on reliability, performance, and maintainability. This role is ideal for someone who thrives on solving tough technical problems and contributing directly to business\-critical outcomes. **Key Responsibilities** * Design, build, and maintain core components of our Quote Engine in production. * Develop scalable, concurrent, and resilient services using modern patterns. * Collaborate with cross\-functional teams (Sales, Finance, Vendor Management) to deliver features aligned with business goals. * Implement event\-driven and queue\-based architectures with a focus on durability and fault tolerance. * Contribute to operational excellence by writing observable, maintainable, and secure systems. * Participate in code reviews, testing, and deployment to ensure high\-quality releases. * Takes on additional responsibilities and projects as needed to support the success of the team and organization. **Must\-Have Technical Expertise** * 5\+ years experience designing, building, and maintaining features across backend (PHP, Python, or Go) and frontend (React) with a 50/50 focus. * Proven experience building highly scalable, concurrent systems. * Strong knowledge of: * + Multithreaded architectures, concurrency primitives, and non\-blocking I/O. + Distributed systems design (CAP trade\-offs, consistency models). + Event\-driven architectures and microservices (Kafka, RabbitMQ, NATS, Service Bus). + Fault tolerance, back\-pressure strategies, and circuit breakers. * Familiarity with Azure (preferred) or other cloud platforms, including serverless orchestration. * Solid understanding of authentication/security standards (OAuth 2\.0, mTLS, secrets management). **Why you'll love life at Command\|Link** Join us at CommandLink, where you'll have the opportunity to shape the future of business communication. We value the innovative spirit and seek individuals ready to bring their unique vision and expertise to a team that values bold ideas and strategic thinking. Are you ready to make an impact? * Room to grow at a high\-growth company * An environment that celebrates ideas and innovation * Your work will have a tangible impact * Flexible time off * Fun events at cool locations * Employee referral bonuses to encourage the addition of great new people to the team At CommandLink, we’re committed to creating a fair, consistent, and efficient hiring experience. As part of our process, we use AI\-assisted tools to help review and analyze applications. These tools support our recruiting team by identifying qualifications and experience that align with the requirements of each role. AI tools are used only to assist in the evaluation process — they do not make final hiring decisions. Every application is reviewed by a member of our recruiting or hiring team before any decisions are made.