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Software Engineer IV - Billing and Internal Systems Infrastructure at Sinch. 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. . Responsibilities . 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. . Preferred. 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.  . Company Location: United States.