Principal Software Engineer

About AdsWizz

AdsWizz, a subsidiary of SiriusXM, is the leading global provider of digital audio and podcast advertising solutions. AdsWizz is the underlying monetization solution for well-known music platforms, podcasts, and broadcasting groups worldwide, giving advertisers of all sizes unprecedented access to premium and niche audio content. Through dynamic ad insertion, advanced programmatic platforms, and innovative audio formats, AdsWizz efficiently connects buyers and sellers for digital audio and podcast advertising. AdsWizz is a global company with a presence in over 40 countries and a Technology Development Hub in Bucharest, Romania.

How You’ll Make An Impact

As a Principal Software Engineer, you will be a senior technical lead in a high-performing team focused on building scalable backend systems, high-trust data products, and advanced reporting solutions that power SiriusXM’s and AdsWizz’s ad monetization platforms. You will lead architecture and design efforts across our data pipelines, services, and data APIs ensuring performance, reliability, and extensibility at scale.

What You’ll Do

• Design and build high-performance, stable, scalable AdsWizz data systems that will be deployed in an enterprise setting.
• Design and evolve low-latency APIs and access layers enabling downstream audience and content targeting activation and analytics.
• Own and evolve microservices built for massive scale using performant languages (Java, Go, Rust) and backed by fast distributed datastores like DynamoDB, Aerospike, and Redis.
• Translate privacy and governance requirements into robust engineering designs that support safe, observable handling of listener identity data.
• Lead architecture reviews and technical planning sessions in close partnership with data and personalization product leadership counterparts to align systems design with business goals.
• Work with various teams of engineers building software in a collaborative development process.
• Execute tasks with utmost clarity and precision, demonstrating a strong sense of ownership and providing clear direction to drive projects forward effectively.
• Collaborate with the Product team to clarify the scope of the projects by giving thoughtful feedback which challenges and clarifies requirements intent.
• Collaborate with the Global Operations and Cloud Infrastructure teams to ensure flawless production deployments and support the Incident Management team.
• Responsible for conducting technical interviews as needed, ensuring a consistently high bar for engineering excellence and performance standards.
• Responsible for mentoring/growing junior engineers.

What You’ll Need

• Bachelor’s Degree in Computer Science/Mathematics or a similar field.
• Strong understanding of engineering software processes, lifecycle methodology, configuration management, release management, and system verification and testing.
• Ability to work independently and oversee entire projects or significant parts, focusing on completing the tasks on time.
• Proven ability to research and become proficient in new technologies.
• Strong analytical and problem-solving skills, with meticulous attention to detail and a dedication to continuous improvement.
• Proficiency in constructing detailed software architecture diagrams.
• Interpersonal skills and ability to interact and work with staff at all levels.
• 10+ years of backend engineering experience; 3+ years in senior/principal IC roles.
• 6+ years of software engineering experience in Java / python / RUST programming language.
• 4+ years of experience microservices development supporting scalable products, utilizing diverse cloud platforms (ideally AWS).

Mandatory Technical Expertise In The Following Areas

• Building and operating low-latency RESTful microservices using Java, Go, or similar in cloud-native environments.
• Deep experience with high-throughput distributed systems and real-time APIs backed by key-value stores like Aerospike, DynamoDB, or Redis.
• Proven expertise in orchestrating microservices and jobs across containerized environments (Docker, Kubernetes), with solid CI/CD pipeline integration.
• Experience with message passing and channel based communication paradigms with frameworks like ZeroMQ.
• Observability tools like Prometheus, Grafana, ELK stack.
• Collaboration tools like Miro (or Lucidchart), Jira and Confluence.

We consider a plus having relevant expertise in any of the following areas:

• Designing durable, scalable APIs and data contracts for high-velocity data flows.
• Security basics (e.g., OAuth2 standard).
• Foundational Amazon Cloud Services, like S3, CloudTrail, SQS, SNS, Lambda, API Gateway, ElasticCache, Athena, Kinesis, EKS, Cognito, and others.
• Hands on experience with AI coding assistants and tools to help with coding and data analytics.

Our Offer – What’s In It For You

• Casual & friendly working environment with opportunities to impact the company with your ideas and involvement.
• Technology diversity, interesting technical exposure in building the best ad-tech product on the market.
• Corporate annual bonus system to celebrate personal and company wins.
• Individual training budget to use as you like for skill improvement.
• Sports bonus for activities such as gym, biking, and yoga.
• Meal tickets card for enjoyable lunch breaks.
• Gift cards for special events and holidays.
• Days off for your birthday and special events, to recharge and enjoy your BIG moment.
• Private medical subscription to keep you healthy.
• Private Pension Fund (Pillar III) based on your years of tenure.
• Free library subscription for the book lover in you.
• Good hardware devices (new laptops / Macs, displays etc.).
• Parking lots at office location – 60% co-funded by the company.
• Company offsites, CSR activities, and getaways to stay connected and keep the flame alive.

Key skills/competency

• Principal Software Engineer
• Backend Systems
• Data Products
• Reporting Solutions
• Ad Monetization
• Microservices
• Java
• Go
• Rust
• AWS