Senior Full Stack Software Engineer

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 remote position open to candidates residing in the following states: Alabama, Arizona, Arkansas, Colorado, Florida, Georgia, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Mississippi, Missouri, Nevada, New Hampshire, North Carolina, Ohio, Oklahoma, South Carolina, Tennessee, Texas, Utah, Virginia, Wisconsin

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.

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
• Generous Medical, Dental, and Vision coverage for full-time employees
• Flexible time off  
• 401k to help you save for the future
• Fun events at cool locations
• Free DoorDash lunches on Fridays
• Employee referral bonuses to encourage the addition of great new people to the team

Commandlink hires individuals in a number of geographic regions and the pay ranges listed reflect the cost of labor across these regions. The base pay for this position as displayed at the bottom of the job description is a range based on our lowest geographic region, up to our highest geographic region. Pay is based on location among other factors, such as skill-set, experience, and qualifications held.