Sandeep H M
Backend Software Engineer
Bengaluru, India
Professional Summary
Backend Software Engineer with over 3.5 years of experience architecting highly available distributed systems and serverless microservices. Proven track record of designing fault-tolerant platforms using Node.js, Go, AWS, and Temporal, including scaling concurrency 10x, handling 15M+ operations, and eliminating critical external infrastructure costs. Adept at optimizing cloud-native environments, integrating diverse payment gateways, and mentoring engineering teams.
Technical Skills
Languages & Runtimes
Node.js, TypeScript, JavaScript, Go, Python, HTML/CSS, Java
Distributed Systems & Messaging
Temporal, Apache Kafka, AWS SQS, Event Webhooks
APIs, Validation & Frameworks
Express.js, GraphQL, REST, Zod, Hasura, Serverless Framework, React
Databases & Persistence
PostgreSQL, Redis, Elasticsearch, MongoDB, Firebase
Cloud & Infrastructure
AWS (CDK, Lambda, S3, SQS), GCP, Docker, Kubernetes, Nx Monorepo
Integrations & Telemetry
LiveKit, Twilio, Stripe, Verifone, LemonSqueezy, OpenAI, Mixpanel, Grafana, Sentry
Work Experience
Software Engineer
Independent Consultant- Mereos (Paris, France): Engineered performance improvements for a Django/Celery assessment platform, resolving asynchronous worker bottlenecks to scale concurrent user sessions 10x from 1K to 10K.
- Envizen Consulting LLP: Engineered a high-compliance document management pipeline featuring asynchronous AWS S3 and Elasticsearch ingestion with strict Maker-Checker RBAC to enforce Separation of Duties.
Software Engineer
Talview- Short Link & Platform Scale: Architected and built a URL shortening service end-to-end, scaling to 15M+ redirects with a cache-aside strategy on Redis and eliminating 100% of external provider costs.
- Payment Systems & Concurrency: Integrated Stripe, LemonSqueezy, and Verifone as Merchants of Record (MoR), building a multi-provider checkout abstraction that cut payment failure rates by 18% across 10K+ daily transactions. Engineered automated refund engine as a Temporal local activity — detecting failed transactions and triggering refunds without manual intervention. Extended drive slot capacity logic to Temporal with workflow conflict policies to eliminate booking race conditions.
- Notifications & Reliability: Built the 24-hour SMS booking reminder pipeline end-to-end, driving a 25% reduction in session no-shows across 20,000+ daily candidate alerts. Designed event-driven triggers across candidate assessment lifecycles, decoupling form state changes from downstream notification and scoring services.
- AI Orchestration & Infrastructure: Architected AI candidate assessment pipelines using Temporal workflows to orchestrate GPT agents for automated behavioral scoring. Engineered centralized Service Discovery module across a TypeScript Nx monorepo.
- Mentorship: Mentored 4+ junior engineers through pair programming and code review, reducing ramp-up time by 30% and boosting PR acceptance by 40%.
Associate Software Engineer
Talview- Proctoring Platform & Integrations: Maintained stability for LiveKit/Twilio proctoring services supporting 1,800+ concurrent live video sessions. Built Caveon external proctoring webhook callbacks and Cancel Proctoring APIs with unique constraint enforcement.
- Reconciliation Service: Automated session state auditing by building a concurrent reconciliation service that detected and resolved Twilio ↔ database drift across active proctoring sessions.
- AI Alert Pipeline & Cost Optimization: Replaced rule-based alert heuristics with an OpenAI confidence scoring agent for behavioral signal triage. Implemented Temporal orchestration to prune stale S3 multipart uploads, saving $12,000 annually in AWS costs.
- Configuration & Telemetry: Engineered dynamic configuration management service with a centralized UI, cutting client onboarding time by 70%. Built Mixpanel telemetry pipeline processing 1M+ monthly events.
Software Intern
Talview- Built notification module leveraging iCal integration with RSVP negotiation functionality for event management.
Education
Bachelor of Computer Applications (Web Applications)
Jain University • Bengaluru, India
Awards & Recognition
Quarterly Engineering Champion
Talview • August 2023