Senior Backend Engineer - AI

Mango Voice; United States; Hybrid; USD 100,000 - 130,000; Full time

Job summary

Mango Voice is seeking a Senior Backend Engineer to design, develop, and maintain cloud-native applications for their VoIP systems. This role involves a focus on API development using Golang and integrating AI features within AWS infrastructure.

The ideal candidate will have over 5 years of backend software engineering experience and familiarity with agentic development in high-volume environments. It's a remote or hybrid position based in Utah, emphasizing team collaboration and operational excellence.

Qualifications

• 5+ years of software engineering experience, specifically in backend development.
• Extensive experience using Golang for building production-ready systems.
• Hands-on experience with AI-driven agentic development.
• Solid understanding of AWS and microservices architecture.
• Experience in Agile or structured development methodologies.

Responsibilities

• Design and implement scalable, secure APIs and routing logic.
• Monitor, troubleshoot, and resolve platform issues; participate in on-call support.
• Collaborate with the team to drive the full software development lifecycle.
• Mentor junior engineers and ensure adherence to security requirements.

Skills

Golang programming

Cloud infrastructure management

API design and development

Agentic development

Database schema design

Tools

AWS services

Terraform

Git

Job description

Location: Remote or Hybrid in Lehi or St George, UT

• Reports To: Director of Engineering

About Mango Voice

Mango Voice is a leading provider of cloud-based communication solutions, helping businesses of all sizes connect with their customers through innovative VoIP, SMS, and collaboration tools. We are rapidly expanding our partner ecosystem and are looking for a driven individual to help build the technical evolution of our platform.

The Role

Mango Voice is searching for an experienced and collaborative Senior Backend Engineer to design, write software for, and maintain cloud native applications for viewing, configuring, and using the Mango Voice Business VoIP software system. This role will involve working on a small team of 3-5 engineers to build and improve features, handle on‑call duties and support escalations, and maintain software and infrastructure. The focus for this role is integrating and developing AI‑driven features and agentic systems using AWS services and in‑house AI technology.

Key Responsibilities

Technical Design & Development

• Help build our proprietary AI agent — from LLM integration and prompt orchestration to the APIs and infrastructure that run it in production at scale.
• Design and implement scalable, secure, and reliable APIs and routing logic using Golang as the primary language.
• Write, test, and deploy production‑ready code that enhances our platform.
• Contribute to the architectural vision for the unified Conversational AI and Communications Platform, ensuring high performance in a high‑volume environment.

Delivery & Operational Excellence

• Collaborate with Product Management and the engineering team to refine user stories and execute projects.
• Drive the full software development lifecycle for assigned features, from technical design through deployment and maintenance.
• Monitor, troubleshoot, and resolve issues related to platform reliability and API performance, while participating in on‑call rotations.
• Maintain and improve cloud infrastructure (primarily AWS) using automation tools.
• Partner with other engineers, UX/Design, and Product teams to ensure the technical implementation aligns with the intended user experience and product vision.
• Collaborate with the Security and Compliance team to ensure features meet HIPAA, PHI‑handling, and broader security requirements throughout design and delivery.
• Mentor and provide technical guidance to more junior engineers.

Required Qualifications

• Experience: 5+ years of software engineering experience, with a focus on backend development.
• Technical Domain: Extensive experience with Golang (Go) for high‑volume, production‑ready systems.
• AI/ML Depth: Hands‑on experience with agentic development — designing, building, and deploying production LLM‑powered agents and AI‑driven workflows. Familiarity with prompt engineering, retrieval, and agentic frameworks (e.g., LangChain, LlamaIndex), and an understanding of how to evaluate and improve agent reliability in production.
• Cloud Platform: Strong hands‑on experience designing and building solutions on AWS using one or more of the following services: EC2, S3, RDS, Lambda, CloudWatch, CodePipeline, API Gateway, Bedrock.
• Architecture: Solid understanding of microservices principles, API design (REST/gRPC), and solving scalability challenges.
• Datastores: Experience designing efficient database schemas (relational SQL and NoSQL datastores).
• Methodology: Experience working in a structured development methodology such as Shape Up or Agile.
• Collaboration: Proficient in collaborative code management via Git and GitHub; excellent communication and teamwork abilities in a remote environment.

Preferred Qualifications

• Additional Languages: Experience with Typescript.
• Automation: Experience with automating processes like CI/CD, server management, and migrations using tools like Terraform, Ansible, and Bash.
• Industry Experience: Experience in VoIP technologies (SIP, RTP, WebRTC) or messaging (SMS/MMS/RCS).
• Healthcare Experience: Prior experience building software for the Healthcare space, with a deep understanding of HIPAA compliance and security requirements.

Mango Voice is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

We are unable to provide employment visa sponsorship at this time. Applicants must be authorized to work in the United States without current or future sponsorship requirements.