Sandeep Singh
Sandeep

Sandeep Singh

Backend & AI Engineer

Career

13 years, 6 companies,
one through-line.

Every role taught me something the previous one couldn't. From shipping Android apps in Java to architecting AI systems in Python.

L
LevelShift· formerly PreludeSys

Remote · Nov 2021Present5 roles

Technical Lead

Current

Apr 2026Present

Full-time

Leading backend architecture and AI engineering, designing production-grade RAG pipelines and LLM-powered APIs with Python and FastAPI.

  • Leading backend architecture decisions across RAG pipelines, LLM integrations, and FastAPI microservices, owning technical direction for AI feature delivery in production
  • Architecting multi-agent orchestration systems that dynamically route user intent across enterprise integrations including Salesforce, Boomi, and Dynamics 365
  • Conducting code reviews, enforcing engineering standards, and guiding team members to build and adopt reusable backend components
  • Leading technical knowledge-sharing sessions and mentoring team members, raising overall engineering capability across the backend team
  • Participating in RFPs and client requirement gathering, providing technical solutions and effort estimates to support pre-sales and project scoping
  • Collaborating with cross-functional stakeholders to translate AI product requirements into maintainable backend solutions, consistently delivering on schedule
PythonFastAPILangChainOpenAIAzure OpenAIPineconeChromaDBPandasPostgreSQL
Promoted

Senior Technical Specialist

Oct 2025Mar 2026

Full-time

Built scalable backend systems and AI-powered APIs focused on Retrieval Augmented Generation pipelines and LLM integrations.

  • Developed production RAG pipelines leveraging vector embeddings and semantic search for context-aware AI features
  • Integrated OpenAI and Azure OpenAI APIs into backend workflows, enabling LLM-powered automation pipelines
  • Built and maintained FastAPI services with a focus on reliability, performance, and maintainability
  • Managed vector database infrastructure to support efficient similarity search across large document sets
PythonFastAPIAzure OpenAIPineconeChromaDBPandas
Company rebranded to LevelShift

Senior Technical Specialist

Apr 2025Oct 2025

Full-time

Led full-stack architecture and delivery for web platforms, driving performance improvements and scalable backend solutions.

  • Architected and maintained production systems using React, Next.js, and Node.js with measurable performance improvements
  • Built robust RESTful APIs with NestJS enabling modular, maintainable backend services integrated with frontend applications
  • Defined and enforced code quality standards, testing practices, and CI/CD pipelines that improved team velocity
  • Conducted system analysis to identify bottlenecks and architectural improvements for more scalable, resilient solutions
React.jsNext.jsNode.jsNestJSPostgreSQLDockerCI/CD
Promoted

Senior System Analyst

Oct 2022Mar 2025

Full-time

Drove full-stack development and system architecture across web platforms, translating business requirements into scalable technical solutions.

  • Partnered with stakeholders to translate business requirements into detailed technical specifications, consistently delivering on schedule
  • Led architectural decisions across the stack, improving system scalability and long-term maintainability
  • Built and scaled React and Node.js applications with a focus on performance and reliability
  • Introduced testing and deployment standards that reduced release friction across the engineering team
React.jsNext.jsNode.jsNestJSPostgreSQLREST APIs
Promoted

System Analyst

Nov 2021Sep 2022

Full-time

Drove cross-platform mobile and web development, delivering polished user experiences across React Native, React.js, Android, and iOS.

  • Built and maintained shared React Native codebases, reducing time-to-market for cross-platform releases while preserving native-level performance
  • Analyzed and enhanced system functionalities across mobile and web surfaces, reducing defects and improving end-user experience
  • Applied platform-specific best practices from mobile to React.js projects, bridging the gap between the two surfaces
  • Operated effectively in a fully remote environment with strong async communication and consistent on-time delivery
React NativeReact.jsAndroidiOSJavaScriptTypeScript
P
ProEves

Gurugram, India · Apr 2019Oct 2021

Technology Lead, Mobile

Apr 2019Oct 2021

Full-time

Led end-to-end design, development, and delivery of mobile products across Android and iOS, managing a team and owning the full product lifecycle.

  • Directed cross-platform mobile development using React Native, Android (Java/Kotlin), and iOS (Swift), shipping products to production
  • Established code review processes and structured deployment pipelines, improving code quality and reducing release cycle time
  • Designed and shipped product features in close collaboration with product and design teams, improving user satisfaction and retention
  • Mentored junior engineers, fostering a culture of technical excellence, accountability, and continuous learning
  • Managed sprint planning and backlog prioritization across multiple concurrent mobile workstreams
React NativeAndroidJavaKotliniOSSwiftFirebase
N
NetSet Software Solutions

Sahibzada Ajit Singh Nagar, India · Jan 2018Mar 2019

Sr. Android Developer

Jan 2018Mar 2019

Full-time

Spearheaded Android development within an agile team, taking ownership of delivery from sprint planning to production release.

  • Collaborated directly with clients to establish program specifications and ensure clear, measurable deliverables
  • Resolved complex Android-specific challenges including performance bottlenecks, device compatibility, and architectural decisions
  • Facilitated Scrum ceremonies including sprint planning, daily standups, and retrospectives to keep the team aligned
  • Worked across the full delivery cycle from requirements through testing, QA, and production release
AndroidJavaREST APIsSQLiteScrum
A
Ameba Technologies

Sahibzada Ajit Singh Nagar, India · Jun 2015Dec 20172 roles

Team Lead Android

May 2016Dec 2017

Full-time

Led a mobile engineering team in the design, development, and delivery of Android and iOS applications, owning both technical direction and project outcomes.

  • Managed end-to-end delivery of mobile products across Android (Java) and iOS (Objective-C), ensuring quality and on-time releases
  • Conducted rigorous code reviews and established deployment processes that raised engineering standards and reduced post-release defects
  • Coordinated between engineering, design, and product stakeholders to align technical execution with business goals
  • Designed and shipped features with a strong focus on performance, maintainability, and user satisfaction
AndroidJavaiOSObjective-CGit
Promoted

Senior Android Developer

Jun 2015May 2016

Full-time

Contributed as a senior individual contributor on Android development, working across the full feature lifecycle from requirements to release.

  • Designed and developed Android applications in Java, applying best practices in architecture, performance, and code quality
  • Expanded into iOS (Objective-C) development, broadening platform coverage for the team
  • Partnered with product, design, and QA to define requirements, craft intuitive UIs, and deliver polished user experiences
  • Contributed to architecture discussions and helped define technical standards adopted across the mobile team
AndroidJavaiOSObjective-CUIKit
O
Oditi Global Solution

Sahibzada Ajit Singh Nagar, India · Jul 2014Jun 2015

Senior Android Developer

Jul 2014Jun 2015

Full-time

Delivered high-quality Android applications while leading bug triage and performance optimization efforts across the team's mobile products.

  • Owned core Android modules end-to-end from architecture through deployment
  • Led bug-fixing and performance optimization sprints, improving app stability, responsiveness, and crash-free rates
  • Introduced code refactoring practices that improved long-term maintainability and reduced technical debt
  • Coordinated with project managers and cross-functional teams to prioritize workloads and ensure quality delivery
AndroidJavaSQLiteREST APIsGit
J
Jandec Corp

Sahibzada Ajit Singh Nagar, India · Dec 2012May 2014

Android Application Developer

Dec 2012May 2014

Full-time

Built Android applications from the ground up, collaborating with design and product teams to deliver user-centric mobile experiences.

  • Designed and developed Android features in Java, working with cross-functional teams to gather requirements and implement scalable solutions
  • Translated graphic designs into pixel-perfect layouts ensuring visual fidelity across a range of device sizes and screen densities
  • Contributed to all phases of the development lifecycle from scoping and design through testing, QA, and release
  • Built a strong foundation in Android development patterns and mobile engineering best practices
AndroidJavaXMLSQLiteREST APIs