Senior Fullstack Engineer (Python/React)

About the role

BlackLine is looking for a Senior Fullstack Engineer with an AI-first mindset, based in Bengaluru. The role combines deep backend expertise with strong frontend engineering to design, build and operate scalable, secure SaaS applications, embedding AI-driven capabilities such as intelligent automation and AI-assisted workflows. It calls for end-to-end ownership from UX/UI components to distributed backend services.

Key responsibilities

• Lead frontend and backend development, including requirements analysis, system design, estimation, implementation, testing and delivery.
• Build, test, optimize and scale user-facing UI components and backend services, turning product requirements into specifications, architecture diagrams and test plans.
• Review code across the stack and guide developers toward quality, consistency and maintainability.
• Design and build scalable, secure distributed backend services in Go and Python, focusing on concurrency, performance and production readiness.
• Develop RESTful APIs, microservices, backend workflows and platform services.
• Modernize and migrate legacy .NET/C# services into Go/Python microservices or cloud-native platforms.
• Use AI-assisted development tools (coding copilots, intelligent IDEs, test generation, code review assistants) and integrate AI-powered services or agents into products.
• Evaluate emerging AI tools and collaborate with product, design and platform teams to turn AI capabilities into customer value.

Required profile

• BS/MS in Computer Science or equivalent practical experience.
• 6+ years of professional software engineering experience across frontend and backend systems.
• 3+ years building highly optimized web applications and/or SaaS platforms.
• Experience with or modernization of C#/.NET systems.

Required skills

• Backend: Go or Python, SQL and relational database design, distributed systems, microservices, multi-tenant SaaS.
• Frontend: HTML5, CSS3, JavaScript, TypeScript, React/Angular/Vue, SPAs, Micro-Frontends.
• Cloud and platform: AWS/Azure/GCP, Docker, Kubernetes/Nomad, API gateways, OAuth2/OIDC, Kafka or RabbitMQ.

Candidates living within a reasonable commute to an office will work in the office at least 3 days a week. BlackLine is an equal opportunity employer and offers professional development seminars and affinity groups.