Sandeep Jaiswal

Senior Software Engineer at Bolt

Tallinn, Estonia

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About Me

I have over 7 years of experience building scalable distributed systems and full-stack applications. Throughout my career, I've played various roles including Backend Developer, Fullstack Developer, Platform Engineer, and Senior Software Engineer.

Currently at Bolt, I lead cross-functional initiatives and develop features that drive significant business impact. I enjoy solving challenging problems and building products that make a difference.

Technologies I work with

TypeScriptNode.jsJavaPythonGoReactAngularKubernetesDockerAWSPostgreSQLMongoDB

Experience

Senior Software Engineer

Bolt

Jul 2025 - Present · Tallinn, Estonia

  • Spearheaded development of the Cashback feature for Bolt Food, coordinating 7+ cross-functional teams including Engineering, Product, Finance, and Legal
  • Feature projected to save over €1M annually by replacing standard discounts with expiring cashbacks, optimizing unused liability

Tech: TypeScript, Node.js, SQL Server, React

Software Engineer

Bolt

Nov 2022 - Jul 2025 · Tallinn, Estonia

  • Led design and full-stack development of Bolt Plus subscription model, scaling to 10+ countries with €220K revenue impact in Q1 2025
  • Architected Restaurant Portal feature enabling partner item discounts, driving €3M revenue increase in 6 months
  • Managed coordination across engineering, product, and business teams

Software Development Engineer II

Disney+ Hotstar

Aug 2021 - Oct 2022 · Bengaluru, India

  • Decreased Kubernetes deployment time by 40% through internal automation tooling
  • Maintained 99.95% service availability by integrating Grafana and Victoria Metrics
  • Integrated SaaS logging platform for long-term application log retention
  • Managed and upgraded multiple Kubernetes clusters without downtime
  • Mentored interns on building an internal AWS Access Management portal

Tech: Kubernetes, Docker, React, Ruby on Rails, Prometheus, AWS

Application Developer

Thoughtworks

Jun 2019 - Aug 2021 · Bengaluru, India

  • Doubled e-commerce client revenue by building scalable microservices for marketplace transition
  • Optimized JPA queries using Entity Graph to handle 3000+ requests/second
  • Automated performance tests with Python and Locust to identify slow API endpoints
  • Enhanced test coverage with JUnit and Mockito, reducing bugs and improving availability
  • Mentored new graduates through code reviews, walkthroughs, and assignments

Tech: Java, Spring Boot, Angular, PostgreSQL, Cassandra

Let's Connect

I'm always interested in hearing about new opportunities and interesting projects.

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