Senior Software Engineer - job 1 of 3

This role is for one of the Weekday's clients

Min Experience: 5 years

Location: USA, California City

JobType: full-time

We are searching for a highly skilled Senior Software Engineer who brings deep expertise across backend engineering, distributed systems, and high-performance data processing. This role is ideal for someone who enjoys solving complex technical challenges, building scalable systems, and working with modern data technologies such as ClickHouse, along with programming languages like Java, Golang, and Python.

Key Responsibilities

• Design, develop, and optimize backend services using Java, Golang, and Python, depending on system requirements and performance needs.
• Work extensively with ClickHouse, designing efficient schemas, optimizing queries, and building high-speed data pipelines.
• Develop scalable and reliable services to support real-time analytics, large data ingestion, and high-volume data processing.
• Contribute to architectural decisions, ensuring that system designs are scalable, fault-tolerant, and aligned with long-term product goals.
• Collaborate closely with product teams and engineering peers to turn complex business requirements into well-designed, robust technical solutions.
• Build microservices, APIs, and system components that integrate seamlessly into distributed systems.
• Implement performance tuning, profiling, and debugging to maintain high efficiency and low latency across services.
• Write clean, testable, and maintainable code following coding standards and best engineering practices.
• Participate in code reviews, share engineering best practices, and mentor junior developers when needed.
• Ensure system reliability, security, and observability through proper logging, monitoring, and alerting processes.
• Automate workflows and contribute to CI/CD processes to support continuous delivery and operational excellence.
• Troubleshoot production issues, conduct root-cause analysis, and implement long-term fixes to enhance platform stability.
• Create and maintain documentation for architectural diagrams, APIs, data flows, and system components.
• Continuously research new technologies, evaluate technical feasibility, and contribute innovative ideas for platform improvements.

What Makes You a Great Fit

You will thrive in this role if you bring:

• 5+ years of professional software engineering experience, preferably in backend, data engineering, or distributed systems roles.
• Strong proficiency in ClickHouse—including database design, query optimization, and large-scale analytics workloads.
• Advanced programming skills in at least two of the following: Java, Golang, Python.
• Experience building high-performance, low-latency systems capable of handling large datasets and high throughput.
• Solid understanding of distributed system architecture, concurrency, data modeling, and system design principles.
• A solutions-driven mindset with the ability to break down complex challenges into simple, elegant technical implementations.
• Strong communication skills with the ability to collaborate effectively in a dynamic engineering environment.
• A proactive and ownership-oriented approach, with enthusiasm for building scalable systems and driving engineering excellence.
• A passion for learning new technologies and improving existing systems for better performance and reliability.