Sr. Software Engineer (Numbers) New Raleigh, NC

Bandwidth; Raleigh, Northern (NC, KY); Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Medical, Vision, & Dental coverage

4 weeks PTO

PTO embargo policy

Volunteer hours & Bandwidth challenges

"Mahalo moments" time off program

Workout lunches & nutritionist

Job summary

Bandwidth is seeking a Senior Software Engineer to lead and own distributed systems powering our Numbers platform. You will design, build, test, deploy, and monitor services, API endpoints, and dashboards at scale. Collaboration across teams and mentoring will be key as you push for architectural excellence with AI at the core.

You should thrive in an environment embracing AI-driven tooling and continuous learning, delivering robust, scalable solutions with a customer-focused mindset.

Qualifications

• 5+ years building web services in a modern language (Java preferred).
• Cloud deployments and AWS experience emphasized.
• Strong understanding of HTTP, REST API design.
• Experience designing and working with distributed systems.
• Experience with relational and non-relational databases.
• Experience with scale, performance optimization and fault tolerance.
• Experience with test automation patterns and frameworks.
• Continuous learning mindset and enthusiasm for AI.
• Active use of AI coding assistants in the software lifecycle.
• 4-year technical degree or equivalent experience.

Responsibilities

• Own services end-to-end—from design and development to testing, operations, and production monitoring.
• Create and maintain REST APIs (Java/Spring), dashboards (React), and AWS infrastructure.
• Lead solutions end-to-end, collaborating across teams to ship value.
• Identify and solve scaling problems to ensure high availability.
• Mentor junior and mid-level developers via code reviews and design discussions.
• Partner with product owners to translate requirements into maintainable solutions.
• Use AI as a core engineering tool daily across lifecycle stages.
• Drive continuous improvement for craft and platform reliability.

Skills

5+ years

Distributed systems

HTTP & REST APIs

Cloud deployments

Scale & performance

Test automation

AI enthusiasm

Continuous learning mindset

AI coding assistants

4-year technical degree or equivalent

Education

4-year technical degree or equivalent

Tools

AWS

React

Kafka

ActiveMQ

GitHub Copilot

Cursor

Claude

Job description

At Bandwidth, we shape how the world connects. We're the global communications software company and Tier 1 network operator with global reach. The voice, messaging, and emergency services infrastructure behind the brands and apps you use every day.

Because we own the network we build on, the problems you'll solve here are bigger, more complex, and more impactful. And as communications shifts to AI, we're the infrastructure layer making it possible.

We call ourselves BANDmates because building something this big takes collaboration, different perspectives, and the freedom to bring your authentic self to the table.

We're experts who speak like humans. Ready to build what's next? #JoinTheBand

What We Are Looking For:

We're looking for a Senior Software Engineer who leads by example — someone who takes deep ownership of what they build, moves fast without cutting corners, and is genuinely excited by the challenge of designing and scaling distributed systems that millions of people depend on.

You are the right candidate if you thrive with mission-focus, enjoy solving complex problems at scale, and are energized — working in an environment where AI is woven into how great engineers work every day. We don't treat AI as a future capability. It's how we build now, and we want teammates who feel the same way.

What You’ll Do:

• Own your services end-to-end — from design and development to testing, operations, and production monitoring. You build it, you run it.
• Create and maintain REST APIs (Java/Spring), customer-facing dashboards (React), and the cloud infrastructure (AWS) that powers the Numbers platform.
• Lead solutions from start to finish, collaborating across teams to iteratively ship value aligned to customer and business needs.
• Identify and solve scaling problems through both application development and infrastructure optimization, ensuring high availability and fault tolerance.
• Mentor junior and mid-level developers through productive code reviews, thoughtful design discussions, and by modeling the engineering standards you want to see on the team.
• Partner with product owners and stakeholders to translate requirements into well-designed, maintainable solutions — contributing to feature sizing and technical roadmap discussions.
• Use AI as a core engineering tool — not occasionally, but daily. You reach for AI assistants in code generation, design exploration, debugging, and documentation, and you do it with the confidence of someone who knows the fundamentals well enough to lead the AI, not just follow it.
• Drive continuous improvement — look critically at what we're building and how we're building it, and originate ideas that advance both our craft and our platform’s reliability.

What You Need:

You are the right candidate if…

• You have 5+ years of experience building web services in a modern programming language (Java strongly preferred; C# or Go also welcome)
• You have built and deployed applications for the cloud, preferably AWS
• You have a solid understanding of network protocols, HTTP, and REST API design
• You have experience designing and working with distributed systems
• You have experience with relational and non-relational database systems
• You have experience with scale, performance optimization, and building for fault tolerance
• You have experience with test automation patterns and frameworks
• You bring a continuous learning mindset — the tooling, the patterns, and the pace of change don't unsettle you, they excite you. You adapt quickly, absorb new concepts eagerly, and bring others along with you.
• You are genuinely enthusiastic about AI — you follow the space, you experiment, and you have a point of view on where engineering is heading
• Actively use AI coding assistants (GitHub Copilot, Cursor, Claude, or similar) in all parts of the software development lifecycle
• You hold a 4-year technical degree or equivalent experience

Bonus Points:

It would be really great if you also…

• Have hands-on experience with AWS (ECS, EKS, API Gateway, S3, SQS, Lambda, Aurora)
• Have some experience with front-end development, preferably React
• Have experience with messaging brokers (Kafka, ActiveMQ)
• Have experience working with Agentic coding frameworks like Strands in a professional context
• Bring a genuine enthusiasm for AI — you follow the field, you form opinions, and you help teammates level up their own AI fluency

The Whole Person Promise:

At Bandwidth, we’re pretty proud of our corporate culture, which is rooted in our "Whole Person Promise." We promise all employees that they can have meaningful work AND a full life, and we provide a work environment geared toward enriching your body, mind, and spirit. How do we do that? Well…

• 100% company-paid Medical, Vision, & Dental coverage for you and your family with low deductibles and low out-of-pocket expenses.
• All new hires receive four weeks of PTO.
• PTO Embargo. When you take time off (of any kind!) you’re embargoed from working. Bandmates and managers are not allowed to interrupt your PTO – not even with email.
• Additional PTO can be earned throughout the year through volunteer hours and Bandwidth challenges.
• "Mahalo moments" program grants additional time off for life’s most important moments like graduations, buying a first home, getting married, wedding anniversaries (every five years), and the birth of a grandchild.
• 90-Minute Workout Lunches and unlimited meetings with our very own nutritionist.