Senior Backend Engineer, Audio Processing

ApplyMint; Denmark; Hybrid; DKK 900,000 - 1,300,000; Full time

Benefits offered by this job

Equipment provided by Corti

Hybrid work in Copenhagen

Job summary

Corti is seeking an engineer to build the next generation of high-scale audio processing infrastructure for life-critical environments like emergency dispatch centers and hospitals. You will integrate AI capabilities into SIP/SIPREC-based systems and maintain a backend processing over 100,000 calls per day.

You will work with cloud-native architectures, REST/WebSockets, and real-time audio tech, reporting to Platform Engineering in a hybrid Copenhagen setup.

Qualifications

• Mastery of Go programming language.
• Deep understanding of network protocols (SIP and SIPREC).
• Proven track record building and scaling foundational infrastructure.
• Experience designing features with high complexity.
• Hands-on experience with cloud computing architecture.
• Experience running, monitoring, and operating REST, WebSockets, Kafka or an event-driven architecture.
• Experience with containers and orchestration tools.
• Strong code quality mindset and efficiency.
• Experience with WebRTC and real-time audio processing is a plus.
• Excellent English verbal and written communication, including remote work.

Responsibilities

• Architect and maintain systems processing over 100,000 calls per day.
• Develop foundational infrastructure using SIP and SIPREC.
• Integrate AI capabilities into low-latency audio processing pipelines.
• Collaborate with Platform Engineering to ensure reliability and scalability.
• Hands-on development of innovative solutions where design choices matter.
• Participate in design reviews and code reviews with colleagues.
• Mentor developers across levels to foster strong development culture.

Job description

We are on a mission to ensure everyone has access to medical expertise, no matter where they are.

Half the world still lacks access to quality healthcare. Even in advanced systems, outcomes are uneven, and clinicians are overwhelmed. Medical knowledge grows faster than human capacity can keep up.

Corti exists to close that gap. Our AI platform expands access to medical expertise, reducing errors, restoring time to clinicians, and making care more affordable, accessible, and human again.

There is no quality healthcare without a quality dialogue, and no reliable AI without a strong foundation. Help us build both.

Corti is the frontier lab for clinical-grade AI. We build world-leading models and infrastructure that power healthcare's most ambitious software - from EHR vendors and virtual care platforms to the health systems that care depends on. Today, Corti serves over 100 million patients annually, including the NHS.

Our flagship model, Symphony, is trained and validated on real clinical data from real patient interactions, and powers the clinical and administrative work that healthcare runs on.

We power the builders who are redefining how healthcare works, from startups creating new patient experiences to enterprises modernizing the systems that care depends on.

If you believe that AI purpose-built for medicine will define the next century of healthcare, you belong at Corti.

We are looking for an engineer passionate about building the next generation of high-scale audio processing infrastructure for communication centers that form a vital part of our critical infrastructure, including emergency dispatch centers and hospitals. You will be responsible for integrating AI capabilities into environments dominated by network protocols like SIP and SIPREC, ensuring robust and scalable performance at the heart of life-critical operations.

What you'll be doing:

• Architect and maintain systems processing over 100,000 calls per day.

• Develop foundational infrastructure using network protocols such as SIP and SIPREC.

• Integrate AI capabilities into low-latency, high-throughput audio processing pipelines.

• Collaborate with the Platform Engineering team with a commitment to engineering excellence to ensure system reliability and scalability.

• Hands-on development of an innovative solution where design choices matter

• Work with colleagues in design and code reviews

• Contribute to a strong culture of development at Corti through mentorship of developers of all levels

What you bring:

• Master of Golang

• Deep understanding of network protocols, specifically SIP and SIPREC

• Proven track record of building and scaling foundational infrastructure

• Experience in ideating and implementing features with high complexity

• Hands‑on experience with cloud computing architecture and development

• Experience running, monitoring, and operating REST, WebSockets, Kafka or an event-driven architecture

• Experience with containers and orchestration tools

• A passion for writing clean and efficient code

• Experience with WebSocket, gRPC and CockroachDB is a significant plus.

• Experience with real‑time audio processing and WebRTC is a significant plus.

• Excellent English verbal and written communication skills, including all‑remote communication

Life at Corti

• You will be reporting to the Director of Platform Engineering.

• The position is full‑time and starts as soon as possible.

• Hybrid working environment in Copenhagen.

• Equipment provided by Corti

Bringing in top talent from all backgrounds is crucial in our pursuit to improve the world of healthcare. We encourage applications from all people and do not discriminate based on race, religion, national origin, gender, sexual orientation, age, and/or disability status.

At Corti, experience comes in many forms, and we’re passionate about creating teams with a multitude of perspectives! If you believe your experience is close to what we’re looking for but not an exact match, we still hope you’ll consider applying!