Responsive - Software Architect - SaaS

About The Role Responsive is looking for a product-minded Software Architect with deep technical expertise and a strong track record of designing and scaling multi-tenant B2B SaaS applications.

We are looking for someone who can drive architecture across scalability, security, performance, reliability, and cloud-native systems, while also evaluating and adopting emerging technologies such as Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), Agentic AI, and modern search technologies.

What You'll Be Doing

• SaaS Architecture: Design and evolve scalable, secure, and reliable multi-tenant SaaS platforms.
• Scalability & Performance: Architect systems to support growing customers, users, workloads, and data volumes while maintaining strong performance.
• Security & Reliability: Define architecture for tenant isolation, access control, data protection, high availability, and fault tolerance.
• Technical Leadership: Lead architecture reviews, drive key technical decisions, mentor engineers, and establish engineering best practices.
• Cloud & Platform Engineering: Design cloud-native solutions across microservices, APIs, databases, caching, messaging, and containerized platforms.
• Emerging Technologies: Evaluate and guide the adoption of LLMs, RAG, Agentic AI, AI orchestration, semantic search, and other emerging technologies.
• Collaboration: Work closely with engineering, product, security, and infrastructure teams to align technology decisions with business goals.

Education What We're Looking For :

• Bachelor's or Master's degree in Computer Science, Information Technology, or a related field.

Experience

• 14+ years of software engineering experience, with at least 5 years in architecture or senior technical leadership roles.
• Strong experience designing and scaling multi-tenant B2B SaaS or enterprise applications.

Skills, Qualifications & Ability

• Deep understanding of multi-tenant SaaS architecture, including tenant isolation, data segregation, authorization, and configuration.
• Strong experience with distributed systems, microservices, APIs, and cloud-native architectures.
• Strong expertise in Java, Spring Boot, and backend system design.
• Experience with React and modern frontend technologies, with a good understanding of frontend architecture and integration with backend services.
• Experience with MongoDB, SQL/NoSQL databases, caching, messaging, and event-driven architectures.
• Strong knowledge of scalability, performance optimization, high availability, fault tolerance, and disaster recovery.
• Strong understanding of application security, cloud security, authentication, authorization, and data protection.
• Experience with AWS, Azure, or GCP, Kubernetes, Docker, and CI/CD.
• Experience with observability, monitoring, logging, and distributed tracing.
• Understanding of LLMs, RAG, Agentic AI, AI agents, semantic search, vector search, and AI orchestration frameworks.
• Strong problem-solving, communication, mentoring, and technical leadership skills.

What Can Help You Stand Out

• Experience scaling multi-tenant SaaS platforms across large customers, users, and data volumes.
• Experience leading major platform modernization, scalability, security, or performance initiatives.
• Experience building or architecting AI-powered applications using LLMs, RAG, or Agentic AI.
• Experience designing globally distributed, highly available cloud platforms.

(ref:hirist.tech)