Sr Software Engineer

BlackLine¯SaaS is the system of interaction for finance and accounting teams and it integrates with numerous ERPs, CRMs, Payment systems, Point of Sale systems and other applications.

As a Senior Software Engineer, you will play a crucial role in building the next generation of BlackLine application. You will be driving innovation into our product suite by designing, developing, troubleshooting, maintaining, optimizing and scaling cloud-based applications and services. In addition to being a hands-on engineer, you will also lead and mentor other engineers in the team.

If you have a passion for delivering products that make a difference, are driven to make things better in all that you do and are eager to work in a collaborative agile environment where developers are dedicated to solving customer problems and innovating, we would love to talk to you.

• Provide deep technical expertise in requirements analysis, system design, effort estimation, development, testing, and delivery of highly scalable, secure, and resilient distributed backend services. 
• Work closely with product managers, architects, and partner engineering teams to translate both explicit and implicit product needs into robust functional and technical specifications. 
• Maintain a strong sense of business value and ROI while making engineering decisions and proposing design or architectural approaches. 
• Lead and influence architecture discussions, driving technical decisions and trade-offs across technology choices, performance, extensibility, reliability, and modernization goals. 
• Estimate work scope accurately and deliver consistently against commitments. 
• Implement, refine, and enforce engineering best practices to ensure that services meet high standards for performance, security, observability, reliability, and maintainability. 
• Research, prototype, benchmark, and adopt emerging technologies—particularly in Go and Python—to evolve the backend platform and support the organization's modernization roadmap. 
• Write clean, idiomatic, testable, and maintainable code primarily in Go and Python, with an emphasis on concurrency, performance optimization, and production-readiness. 
• Contribute to the migration and modernization of existing .NET/C# services into Go/Python-based microservices or cloud-native platforms. 
• Mentor and coach engineers by providing guidance on design patterns, code quality, observability, performance optimization, and system-level thinking. 
• Identify system bottlenecks, technical debt, reliability gaps, or operational inefficiencies, and drive or advocate for continuous improvements. 
• Support release management, deployments, observability improvements, and production operations, including occasional off-hours support as needed. 

Technical / Specialized Knowledge, Skills & Abilities 

• Strong hands-on experience with Go and Python, including: 

• Building concurrent, performant, production-grade Go services using goroutines, channels, and Go’s native concurrency model. 

• Designing Python-based microservices, automation frameworks, backend workflows, or platform tools with emphasis on robustness and maintainability. 

• Experience with Go module management, Python packaging, virtual environments, dependency management, and application structuring. 

• Developing RESTful or gRPC APIs and distributed service components using Go or Python. 

• Experience building web-scale, highly available, multi-tenant SaaS platforms with strong emphasis on backend architecture, distributed systems, and microservices. 

• Experience with C# and .NET Framework / .NET Core is a plus, especially in: 

• Maintaining, extending, or refactoring existing codebases. 

• Supporting modernization efforts for legacy .NET/C# services transitioning into Go/Python-based systems. 

• Cloud & Data Skills 

• Experience with a major public cloud (AWS, Azure, or GCP) and strong understanding of cloud-native architectures, IAM, networking, and managed services. 

• In-depth experience with SQL, relational database schema design, transactional flows, and query/profile optimization. 

• Systems & Architecture 

• Strong foundation in computer science fundamentals: data structures, algorithms, design patterns, concurrency models, and distributed systems concepts. 

• Experience with one or more supporting ecosystem components: 

• API gateways 

• Identity and access management (OAuth2, OIDC) 

• Messaging systems (Kafka, RabbitMQ) 

• Workflow orchestration / job scheduling engines 

• Distributed caching or search systems, etc. 

• Excellent analytical, problem-solving, and system-level thinking capabilities. 

• Strong written and verbal communication skills, able to articulate designs and trade-offs clearly. 

• Collaborative team player with a focus on delivering value and outcomes. 

• Experience working in Agile/Scrum environments. 

• Passion for engineering excellence through automation, CI/CD, unit testing, and continuous improvement.