Software Engineer IV - Billing and Internal Systems Infrastructure

Sinch is pioneering the way the world communicates. More than 150,000 businesses — including Google, Uber, Paypal, Visa, Tinder, and many others — rely on Sinch’s Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email. 

Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey. 

At Sinch we “Dream Big”, “Win Together”, “Keep it simple”, and “Make it Happen”. These values are our foundation! 

We are looking for a highly experienced Software Engineer IV with a deep background in cloud infrastructure, distributed systems design, and large-scale deployment architecture. You’ll help architect and implement core infrastructure platforms that power high-availability services and enable developer velocity across the company. 
As a technical leader on the team, you’ll design scalable, reliable systems using Python and Go, and collaborate cross-functionally to improve observability, performance, and deployment efficiency for our cloud-native applications. 

• Design and implement infrastructure systems that support scalability, resiliency, and maintainability across cloud environments (AWS, GCP, or Azure). 

• Lead architectural discussions and drive technical decisions for large-scale distributed systems and microservices. 

• Build tools and services in Python and Go to automate operational workflows, CI/CD pipelines, and deployment processes. 

• Develop and maintain IaC (Infrastructure as Code) using Terraform, Helm, or similar tools. 

• Ensure systems are observable, secure, and compliant, incorporating metrics, logs, and alerting into every layer. 

• Collaborate with product, DevOps, and security teams to ensure platform reliability and velocity. 

• Provide technical leadership across engineering teams, particularly when working on shared infrastructure, tooling, or services. 

• Mentor and support engineers on your immediate team, helping them grow in their technical careers and navigate complex challenges. 

• 7+ years of professional software engineering experience. 

• Strong proficiency in Go and Python for building backend services and automation tools. 

• Proven experience designing, deploying, and operating cloud-native systems (e.g., Kubernetes, service meshes, autoscaling infrastructure). 

• Deep understanding of distributed systems, networking, caching, and resilient design patterns. 

• Expertise in CI/CD pipelines, containerization (Docker), and orchestration (Kubernetes). 

• Experience with observability tooling (e.g., Prometheus, Grafana, OpenTelemetry, Datadog). 

• Familiarity with Infrastructure-as-Code tools (e.g., Terraform, Pulumi, Ansible). 

• Demonstrated technical leadership across engineering teams, especially in the context of shared platforms or infrastructure. 

• Proven experience mentoring engineers within your team and helping foster a culture of technical growth. 

• Experience with zero-downtime deployments and blue/green or canary rollouts. 

• Prior work with high-throughput, low-latency systems at scale (millions of users or transactions). 

• Contributions to open-source infrastructure tools or frameworks. 

• Familiarity with compliance frameworks (SOC 2, HIPAA, etc.) in cloud infrastructure. 

• Hands-on experience integrating with billing platforms like Zuora, including API usage, data synchronization, and operational monitoring.  

• Degree in Computer Science or equivalent experience.  

• STAY HEALTHY: We offer comprehensive market competitive medical, dental, and vision plans. A variety of supplemental plans are also provided to meet your individual needs including access to telehealth for all participants. 
• CARE FOR YOURSELF: Take advantage of our free virtual counseling resources through our global Employee Assistance Program. Your mental health is as important as your physical health. 
• SECURE YOUR FUTURE: Plan for your future with our Roth and Pre-tax 401(k) options including an employer match for all participants. 
• TAKE A BREAK: Enjoy a generous paid time off program. We value balance and understand that performance at work requires time to rest at home and/or rejuvenate on vacation. 
• PUT FAMILY FIRST: We know that families can be built in a variety of ways; therefore, we offer paid parental leave and family planning support. 
• WORK WHEREVER: Our flexible remote work offerings allow you to work wherever you are the most productive and successful. It is what you do, not where you work, that matters. 
• MAKE AN IMPACT: Support betterment in your community and beyond by taking paid time off to support a volunteer program of your choice. 

We’re proud to be an equal opportunity employer, and all qualified applicants will be considered to join our team regardless of race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other legally protected class. 

The annual starting salary for this position is $152,768.00 - $180,960.00. Factors which may affect starting pay within this range may include geography/market, skills, education, experience, and other qualifications. This role will be accepting applications until 8/08/25 at a minimum. Please note that the application timeline may be flexible to accommodate a comprehensive candidate evaluation.