Senior Software Engineer

About the role

As a Senior Software Engineer (Infra), you’ll own core backend services end to end and keep them fast, reliable, and cost-efficient at scale. You’ll design, build, and operate systems that power assessments, project workspaces, and content for millions of developers. Most work happens in Golang, running on Kubernetes across AWS and GCP, shipped through CI/CD with clear SLOs, strong observability, and safe rollouts. You’ll lead projects that reduce latency and incidents, improve unit costs, and simplify our platform, while partnering with other teams. You’ll join our on-call rotation with solid runbooks, mentor engineers, and set a high bar for design, code, and operations.

What you’ll do

• End-to-End Project Execution: Lead the design, development, and deployment of large and complex backend projects, ensuring timely and quality delivery.
• Technical Leadership: Play a key role in technical discussions, guiding the team through architectural decisions, troubleshooting, and performance optimization.
• Scalability & Performance: Build and maintain systems that can scale to meet the demands of high-traffic applications, with a focus on reliability and uptime.
• Containerization & Orchestration: Implement and manage containerized applications using Docker, Kubernetes, and other container technologies to ensure efficient resource utilization and deployment.
• Cloud Infrastructure: Utilize cloud services (AWS, GCP) to build and deploy infrastructure that supports our product needs, focusing on cost-efficiency, security, and scalability.
• Continuous Improvement: Drive best practices in coding, code reviews, and DevOps, while continuously seeking opportunities for system and process improvements.
• Mentorship: Provide guidance and mentorship to junior engineers, fostering a culture of learning and collaboration within the team.
• Stakeholder Collaboration: Work closely with cross-functional teams to understand business requirements and translate them into technical solutions that meet performance, quality, and availability standards.

Who you are

• Industry Experience: 3–6 years of experience in backend development, with a focus on building scalable, high-performance applications.
• Technical Proficiency: Strong expertise in backend development, preferably in Golang, Python or Java. Experience with containerization technologies such as Docker and Kubernetes is essential.
• Cloud Expertise: Solid experience with cloud platforms, specifically AWS and GCP, including services like SQS, Kinesis, Lambda, GKE, EKS, and others.
• Systems Knowledge: Deep understanding of operating systems, networking, distributed systems, and other relevant areas crucial for building and maintaining high-scale applications.
• Database Skills: Proficiency in database modeling, optimization, and query performance, preferably with relational databases.
• Problem-Solving: Ability to independently drive decisions and solve complex technical challenges.
• Team Player: Strong interpersonal skills, with the ability to build trust and rapport with internal and external stakeholders.
• DevOps Tools: Familiarity with CI/CD tools and workflows, and a willingness to explore new technologies and become a Subject-Matter Expert.

Even better if you have

• Multi-region or large event scaling experience.
• Observability depth: Prometheus/Grafana, OpenTelemetry tracing.
• Traffic shaping: canary, blue-green, feature flags.
• Data pipelines or queueing at scale; backpressure patterns.
• Migrations or provider swaps with zero/minimal downtime.
• Shipped an LLM/AI-backed feature with guardrails, rate limits, and cost/latency/error metrics.

You will thrive in this role if

• You like owning services from design to operations.
• You prefer simple, operable designs over clever ones.
• You measure before/after and aren’t afraid to rollback.
• You handle incidents calmly and fix root causes.
• You mentor others and raise the bar for the team.