Senior Software Engineer – Product Foundations

🔥 39 minutes ago

🇱🇹 Lithuania – Remote

💵 €6.5k - €9k / month

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 0%

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Cast AI

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2019

☁️ SaaS

🤖 Artificial Intelligence

🤝 B2B

SaaS • Artificial Intelligence • B2B

Cast AI is a SaaS platform that automates Kubernetes application performance, infrastructure, and cost optimization for cloud-native teams. It connects to EKS/AKS/GKE and on-prem clusters with no code changes, uses predictive models and runtime signals to rightsize pods, scale nodes, optimize GPUs and Spot instances, and run approved self-healing runbooks to maintain reliability and reduce cloud spend. Cast AI targets platform, SRE, and FinOps teams and supports AI/LLM workloads, GPU optimization, and real-time workload placement and cost intelligence.

📋 Description

• Design, build, and operate backend services in Go that teams and customers depend on • Own features end-to-end from design through implementation, testing, and production rollout • Debug complex production issues involving security-, money-, or trust-critical flows • Collaborate with product and engineering teams on problems without textbook solutions • Contribute to product direction and backlog • Work on authentication, authorization, SSO, billing, audit trails, notifications, feature flags, cloud pricing, Spot availability and discounts, and reporting systems • Participate in on-call rotation where required

🎯 Requirements

• Strong software engineering fundamentals, including clean abstractions, maintainable code, and justified architecture choices • Production experience with Go is strongly preferred; candidates without Go should demonstrate strong systems programming skills in a comparable language • Experience building or operating trust-critical systems at scale, such as authentication/authorization, billing, or financial/accounting-adjacent data • Understanding of API design best practices, including versioning, backward compatibility, authentication, idempotency, and asynchronous patterns • Strong debugging, optimization, and performance-tuning skills, including query profiling, index design, and database performance tuning beyond ORM usage • Experience operating and optimizing systems under high load • Hands-on Kubernetes experience, including pods, services, deployments, and deploying or debugging on a cluster • Experience with AI coding agents and agentic development workflows • Personally driven a complex project end-to-end • Strong verbal and written English skills • Startup mindset; adaptable, proactive, and comfortable with ambiguity • Willingness to participate in on-call rotation for teams that require it • Background check may be conducted at the final recruitment stage • Must be residing in one of the specified European countries • Cast AI does not provide visa sponsorship or work permits

🏖️ Benefits

• Separate compensation for on-call participation (passive coverage and active interventions) • Flexible, remote-first global environment • Equity options • 10% of work time for personal projects or self-improvement • Learning budget for professional and personal development, including international conferences and courses • Annual hackathon • Team-building budget and company events • Equipment budget • Extra days off • Travel costs covered for Vilnius onboarding

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