Senior Software Engineer - Billy Team at Castaigroupinc

Castaigroupinc

Bulgaria; European Union; Lithuania; Poland; Romania·3d ago

SeniorFull-timeGolangRustRailsAWSGCPAzureKubernetesAIAPI

Salary Range

$46,410 - $62,790 /year

Estimated

This salary is estimated based on similar roles. The actual salary may vary.

About the Role

We are looking for a GoLang Developer to join the Billy Team at Cast AI, an automation platform that operates cloud-native and AI infrastructure at scale. This role focuses on building critical foundations for day-2 operations, ensuring the platform runs smoothly, transparently, and at scale.

Key Responsibilities

→Develop and maintain billing systems, including cloud SaaS marketplace integrations and platform usage tracking
→Implement internal feature flags to enable engineering teams to innovate and ship features safely
→Create notification systems to provide customers with real-time visibility into critical events
→Build audit systems for end-to-end auditing, ensuring transparency and trust
→Develop Admin API to enable customer support and internal teams to work efficiently

Requirements

✓Strong software engineering skills with experience in distributed systems and backend development in GoLang
✓Strong debugging, optimization, and performance-tuning skills
✓Experience integrating platforms with payment providers such as Stripe or AWS/GCP/Azure SaaS marketplaces
✓Strong English skills, both verbal and written
✓Must be physically located in any European country, GMT +0 to GMT +3
✓Ability to work independently and collaboratively within a team
✓A proactive, problem-solving mindset with a 'yes, we can' attitude.