Open to opportunities

Arup Das

@arupdas1

Message

Engineering manager and integration architect building event-driven APIs and agentic AI for 150+ tenant SaaS.

India

Message

What I'm looking for

I’m looking to lead integration and platform engineering, ship secure event-driven systems, and productionize agentic LLM capabilities—partnering with product stakeholders to improve reliability, MTTR, and scalable onboarding.

I’m an engineering manager and integration architect with 9 years owning the API, webhook, and event-driven middleware layer of a 150+ tenant B2B SaaS platform. I design custom connectors and orchestration layers across enterprise systems with OAuth/JWT auth, data consistency, and security built in.

I rearchitected webhook event processing using AWS Lambda and SQS to cut event lag from 4+ minutes to near real-time while reducing Lambda compute costs by ~15%. I also built and shipped generative AI features using RAG pipelines and LLM APIs in core product workflows, and I build agents on AWS Bedrock.

I focus on reliability and operational rigor: a FK-safe, wave-based data migration framework for 150 tenants dropped production incidents from 20 to 2 and accelerated onboarding by ~25%. I’ve led SOC 2 Type II compliance end to end with zero escalated findings and direct 14 engineers across backend, integrations, and data engineering to deliver measurable outcomes.

Experience

Work history, roles, and key accomplishments

Current

Vertical Lead, Server Side

Current

Thoughts2Binary

Sep 2020 - Present (5 years 9 months)

Rearchitected a webhook event processing pipeline with AWS Lambda and SQS, reducing event lag from 4+ minutes to near real-time and cutting Lambda compute costs by ~15%. Led multi-tenant B2B SaaS integration architecture for 150+ enterprise tenants and delivered agentic AI on AWS Bedrock/Claude API using RAG and LLM workflows.

AWS Lambda Amazon SQS Event Driven Architecture Anthropic Claude API SaaS architecture

Senior Software Developer

Thoughts2Binary

Aug 2018 - Aug 2020 (2 years)

Optimized PostgreSQL queries and REST endpoints to reduce response times from 1s+ to under 500ms (~70% faster). Led backend and frontend squads using Scrum, mentored ~12 engineers, and improved release reliability by standardizing CI/CD and monitoring.

REST APIs CI CD Scrum Code Review Mentoring System Architecture

Software Developer

Thoughts2Binary

Nov 2016 - Aug 2018 (1 year 9 months)

Developed 30+ REST APIs and integrated legacy SOAP payment services, reducing manual intervention by 40% and accelerating settlements by 25%. Built an ETL-based migration framework to migrate 10M+ rows with zero data loss and designed secure, reliable backend architectures and documentation for integrations.

REST API Development SOA Integration ETL API Design Django FastAPI Backend Work System Design Data Integrity