Senior Backend Engineer (.NET Core)

We are looking for a passionate and skilled backend developer with strong expertise in .NET Core to join our engineering team at LeadSquared. This role is ideal for someone who thrives in building scalable, high performance services and is open to transitioning into Java-based technologies in the future. You will be responsible for designing and developing robust backend systems, APIs, and services that power our platform. A strong sense of ownership, attention to detail, and a commitment to writing clean, maintainable code are essential qualities we look for.

KEY RESPONSIBILITIES

▪️ Design, develop, and maintain scalable backend services using .NET Core.

▪️ Build and optimize RESTful APIs and microservices.

▪️ Collaborate with cross-functional teams to define, design, and ship new features. ▪️ Write clean, efficient, and testable code with a focus on long-term maintainability.

▪️ Optimize database queries and ensure high performance for data-intensive operations.

▪️ Implement caching and messaging solutions for performance and reliability. ▪️ Participate in code reviews and contribute to engineering best practices.

REQUIRED SKILLS & QUALIFICATIONS

▪️ 3–5 years of hands-on experience in backend development with .NET Core.

▪️ Strong programming skills in C#.

▪️ Experience with ASP.NET Core MVC, Web API, and WCF.

▪️ Solid understanding of multi-threading, asynchronous programming, and concurrency.

▪️ Experience with MySQL, SQL Server, or equivalent relational databases.

▪️ Strong expertise in SQL programming and query optimization for large datasets.

▪️ Familiarity with caching solutions such as Redis.

▪️ Experience with message brokers such as RabbitMQ, Kafka, or AWS SQS.

▪️ Hands-on experience with cloud platforms — preferably AWS, or Azure/GCP.

▪️ Exposure to analytics, observability, monitoring, and performance tuning.

▪️ Strong foundation in software design principles and logical thinking. Good to Have

▪️ Familiarity with containerization tools — Docker and Kubernetes.

▪️ Understanding of CI/CD pipelines and DevOps practices.

Role:  Fullstack .NET Engineer- Angular

Experience: 10+ Years

Employment Type: Full-time 

Location: Pune, Balewadi, Laxman Nagar (Hybrid)

Job Description

About the Role

We are looking for an experienced Fullstack .NET Engineer to join our engineering team. You will design, build, and maintain scalable, cloud-based applications end to end — from robust .NET Core APIs and services to responsive Angular front-ends deployed on AWS. Beyond hands-on delivery, you will help champion the responsible adoption of AI-assisted engineering practices across teams, raising the bar on productivity, quality, testing, documentation, onboarding, and delivery efficiency.

This role suits a senior engineer who combines deep technical craftsmanship with strong communication and a collaborative mindset, and who is eager to shape how modern, AI-augmented software is built at scale.

Key Responsibilities

• Design, develop, test, and maintain end-to-end features across the stack using .NET, .NET Core, and modern front-end technologies.
• Build and integrate secure, high-performance RESTful APIs and microservices.
• Develop responsive, maintainable user interfaces using Angular and modern JavaScript/TypeScript.
• Build, Deploy, and operate applications on AWS, leveraging core cloud services for compute, storage, messaging, and observability.
• Adoption of AI-assisted engineering practices across teams to improve productivity, code quality, testing, documentation, onboarding, and overall delivery efficiency.
• Write clean, well-tested, and well-documented code; contribute to automated testing and CI/CD pipelines.
• Collaborate closely with product managers, designers, and fellow engineers to translate requirements into reliable software.
• Participate in code reviews, technical design discussions, and continuous improvement of engineering standards.
• Mentor peers and help onboard new team members, sharing best practices and knowledge.

Required Skills & Experience

• ~10 years of professional software engineering experience in Fullstack development.
• Strong hands-on expertise in .NET and .NET Core with understanding of design patterns.
• Proven experience in API development (RESTful services, microservices, integrations).
• Strong experience in Docker and Containerization.
• Experience working with code quality tools (Ex.- SonarQube, Veracode), familiarity with secure code writing best practices.
• Strong analytical and troubleshooting skills using tools like CloudWatch, Datadog.
• Solid front-end development skills with Angular and JavaScript/TypeScript.
• Practical experience building and deploying applications using AWS services.
• Strong understanding of software design principles, data structures, and testing practices.
• Hands-on experience with AI coding assistants and applying them within team workflows.
• Excellent communication skills — able to collaborate effectively and articulate technical concepts clearly.
• Experience working in Agile/Scrum delivery environments.
• Interest in and openness to adopting AI-assisted engineering tools and practices responsibly.

Nice to Have

• Familiarity with CI/CD tooling and infrastructure-as-code.
• Exposure to SQL and NoSQL databases and performance tuning.
• Knowledge of Three.js/Babylon.js, 3D graphics development, and vector mathematics for building interactive, high-performance web-based visualization applications.   

Key Responsibilities

Design, develop, and maintain scalable applications using .NET Framework / .NET Core

Work with databases using MS SQL Server, Entity Framework, and Dapper

Build and consume RESTful APIs using ASP.NET MVC / Web API

Collaborate with front-end teams using HTML, CSS, JavaScript, Angular/React

Implement cloud solutions using Microsoft Azure (App Services, Azure SQL, Web Jobs, Automation)

Conduct code reviews and mentor junior developers

Ensure application performance, security, and scalability

Follow best practices for coding, testing, and deployment

Required Skills

Strong experience in C#, .NET Framework, .NET Core

Hands-on experience with MS SQL Server

Expertise in ASP.NET MVC, Web API

Proficiency in Entity Framework / Dapper

Experience with Git or similar version control systems

Front-end experience with Angular

Experience in project leadership or team handling

Key Responsibilities

● Lead and mentor a pod of 2–3 engineers, driving delivery planning, estimation, and execution.

● Design, build, and deliver high-quality software using .NET Core, Angular, and Azure.

● Ensure code quality, performance, scalability, and maintainability within the team.

● Contribute to system design and architecture decisions aligned with global services.

● Implement and uphold strong engineering practices, including code reviews, testing, and CI/CD discipline.

● Align solutions to org's global platform strategy and shared services model.

● Collaborate with Product Owners, Architects, and global engineering teams to deliver consistent outcomes.

● Support production readiness, monitoring, and operational stability.

● Drive continuous improvement of engineering processes and practices.

● Contribute to common services and promote reuse and standardization across regions.

Required Skills

● 6+ years of hands-on software engineering experience, including senior or lead roles.

● Expertise in C#, .NET, and .NET Core development.

● Strong experience with Docker/containerization and Azure cloud environments.

● Proficiency in Entity Framework, database performance optimization, and query tuning.

● Deep understanding of transaction and concurrency control, Domain Driven Design (DDD), and microservice architecture.

● Experience with unit and integration testing, and version management.

● Hands-on exposure to DevOps practices, including CI/CD and deployment concepts.

● Ability to scope and size requirements, mentor engineers, and drive technical delivery.

● Strong coding, code review, and quality assurance skills.

● Excellent communication and collaboration skills in distributed/global teams.

Nice to Have

● Over 5 years of experience with Azure cloud platforms.

● Familiarity with Azure frameworks and services.

● Exposure to mobile development, especially with Flutter.

● Experience with NoSQL databases.

● Frontend development experience with Angular.

● Knowledge of CI/CD tools such as GitHub Actions or Azure DevOps.

● Background in SaaS platforms or product-based environments.

● Understanding of performance, security, and scalability patterns.

Employment Type: Full-time, Contractual

Contract Duration: 3–6 Months

Job Summary

We are looking for a skilled .NET Developer with strong experience in C#, ASP.NET Core,

Web APIs, and modern application development practices. The ideal candidate should have a

solid understanding of .NET fundamentals, dependency injection, middleware, action filters,

model binding, and application architecture.

Key Responsibilities

 Design, develop, and maintain scalable applications using .NET and ASP.NET Core.

 Develop and consume RESTful APIs and microservices.

 Implement Dependency Injection and follow SOLID principles.

 Develop and configure Middleware components for request processing.

 Implement and customize Action Filters for authorization, validation, logging, and

exception handling.

 Work with Model Binding, Validation, and API request/response handling.

 Optimize application performance and troubleshoot production issues.

 Collaborate with cross-functional teams in Agile environments.

 Participate in code reviews and follow coding best practices.

Mandatory Technical Skills

.NET & C#

 Strong knowledge of C# and .NET Framework/.NET Core.

 Good understanding of OOPs concepts and design patterns.

 Hands-on experience with Extension Methods.

 Understanding of Delegates, Events, Lambda Expressions, LINQ, and Async

Programming.

 Knowledge of IDisposable interface and Using Statement.

ASP.NET Core

 ASP.NET Core MVC

 ASP.NET Core Web API

 Dependency Injection (Singleton, Scoped, Transient lifetimes)

 Middleware Pipeline

 Action Filters

 Model Binding

 Authentication & Authorization

 Exception Handling and Logging

Database

 SQL Server

 Stored Procedures

 Query Optimization

 Entity Framework Core

Additional Skills

 REST APIs

 Git

 Azure DevOps / CI-CD

 Unit Testing

Preferred Skills

 Microservices Architecture

 Docker & Kubernetes

 Azure Cloud Services

 Messaging Services (RabbitMQ, Service Bus)

 Clean Architecture / Domain Driven Design

Interview Focus Areas

Candidates should be able to explain and demonstrate:

 Dependency Injection and service lifetimes (Singleton, Scoped, Transient)

 Middleware vs Action Filters

 Model Binding in ASP.NET Core

 Extension Methods

 IDisposable and Using Statement

 ASP.NET Core Request Pipeline

 REST API Design Principles

Responsibilities

• Understand the business requirements and technical constraints and architect/design/develop.
• Participate in the complete development life cycle.
• Lead and Review the architecture/design/code of self and others.
• Develop enterprise application features/services using Azure cloud services, C# .NET Core, ReactJS etc, implementing AI-DevSecOps principles.
• Act as a hands-on technical leader of a scrum team.
• Own and be accountable for the Quality, Performance, Security and Sustenance of the respective product deliverables.
• Strive for self-excellence along with enabling success of the team/stakeholders.
• Appraise the performance of self, peers and team members.

Requirements:

• 6 to 10 years of experience in developing enterprise software products, with cloud native stack
• Strong knowledge of C# / .NET Core
• Working knowledge of the JS frameworks – React
• Good experience in automating development using combination of AI tools - Claude + CoPilot + MCP
• Strong experience in Micro-Services and/or Micro-Frontend architecture
• Strong experience in container-based development, AKS, Service Fabric etc
• Strong experience in messaging queue systems like RabbitMQ, Kafka
• Experience in Azure Services like Azure Logic Apps, Azure Functions
• Experience in Relational and No-SQL databases like MS SQL Server, PostgreSQL, MongoDB
• Preferable experience in integrating LLMs, vector databases, RAG into production apps.
• Experience in coaching/guiding/leading a scrum team of junior, senior full stack engineers
• Experience in owning/driving end to end development of multiple functional modules/areas (incl testing, performance testing, deployment)
• Experience in cross-functional collaboration with product owners, senior management etc.
• Strong knowledge of Code Quality, Code Monitoring, Performance Engineering, Test Automation Tools
• Knowledge of reporting solutions like PowerBI, Apache SuperSet etc

-Bachelor's degree in science/ IT/ Computer Science or equivalent

-Minimum 4-6 years of working experience in .NET Core, C#, SQL Server / PostgreSQL, Entity Framework

-Experience in Azure Functions, Azure App Services, Azure API 

-Very good proficiency in English

-stakeholder management

Job Summary

We are looking for an experienced .NET Core Developer with strong expertise in C#, Angular, ASP.NET, AWS Object-Oriented Programming (OOPS), SOLID Principles, and Unit Testing. The ideal candidate will be responsible for designing, developing, testing, and maintaining scalable, high-performance web applications while following coding best practices and clean architecture principles.

Mandatory Skills

• .NET Core / ASP.NET Core
• C#
• Angular
• AWS
• OOPS Concepts
• ASP.NET MVC / Web API
• SOLID Principles
• Unit Testing (xUnit, NUnit, or MSTest)
• Entity Framework Core
• RESTful API Development
• SQL Server

Roles & Responsibilities

• Develop, enhance, and maintain enterprise-grade applications using .NET Core and C#.
• Design and build scalable REST APIs and backend services.
• Apply OOPS concepts and SOLID principles to produce clean, maintainable code.
• Write comprehensive unit tests to ensure application reliability and code quality.
• Participate in code reviews and follow secure coding standards.
• Optimize application performance and troubleshoot production issues.
• Collaborate with cross-functional teams including UI developers, QA, and product owners.
• Follow Agile/Scrum methodologies throughout the development lifecycle.

We are seeking an experienced .NET Developer with strong expertise in C#, ASP.NET Core Web API, Entity Framework Core, PostgreSQL, automated testing, and software design patterns. The candidate should be capable of developing secure, scalable, and production-ready applications with complete technical ownership.

Required Skills and Responsibilities

• Strong knowledge of C#, OOP, LINQ, collections, generics, exception handling, and async/await.
• Proven experience designing secure, scalable, and high-performance ASP.NET Core Web APIs.
• Strong expertise in Entity Framework Core, migrations, transactions, concurrency handling, and query optimization.
• Advanced PostgreSQL knowledge, including complex queries, functions, indexing, execution plans, locking, and performance tuning.
• Experience with unit and integration testing using xUnit, NUnit, Moq, or similar frameworks that would be a plus.
• Good understanding of SOLID principles, Clean Architecture, dependency injection, and appropriate design patterns.
• Experience with authentication, authorization, validation, structured logging, monitoring, and centralized exception handling.
• Familiarity with Git, code reviews, Swagger/OpenAPI.
• Ability to troubleshoot API, application, database, memory, and performance issues.
• Take ownership of features from design and development through deployment and production support.
• Maintain high standards for code quality, security, testing, documentation, and maintainability.
• Proactively identify risks, resolve blockers, support critical releases, and perform root-cause analysis.
• Demonstrate strong problem-solving, communication, accountability, and teamwork skills.

Regards,

HR Team

www.onehubpos.com

Location: Bengaluru

Work Mode: On-site – 5 days a week

Experience: 6–9 years

Job Description:

ROLE OBJECTIVE

• Collaborate with design teams to architect AI-enhanced solutions aligned with business requirements utilizing Azure cloud infrastructure

• Integrate Large Language Models (Claude 4.6, Azure OpenAI Service) into production-grade .NET applications with MS SQL Server backends

Responsibilities specific to the band level are:

• Architect, design, build, and maintain scalable applications using .NET 6/7/8, ASP.NET Core Web API, and Entity Framework Core with MS SQL Server

• Develop innovative solutions integrating Azure OpenAI Service, Claude 4.6 API (Opus/Sonnet), and AI/ML capabilities into enterprise applications

• Implement Claude API and Azure OpenAI Service for intelligent features including RAG systems, NLP processing, and context-aware responses

• Produce production-ready, well-tested code and mentor junior developers on AI integration patterns, React best practices, and .NET development standards

• Actively participate in SCRUM ceremonies, maintain sprint commitments, and adhere to Agile development methodologies

• Collaborate with stakeholders, product owners, and cross-functional teams to deliver AI-driven solutions aligned with business objectives

• Enforce coding standards, implement clean architecture principles, and utilize AI-powered code review tools for quality assurance

• Develop responsive, performant applications with Bootstrap, modern CSS frameworks, and seamless Azure-hosted API integration

• Design and optimize MS SQL Server databases, implement stored procedures, functions, indexes, and query optimization strategies

Other responsibilities include:

• Adhere to established architectural patterns and develop AI-enhanced web applications following enterprise standards

• Execute comprehensive database design, normalization, stored procedure development, and T-SQL optimization in MS SQL Server environments

• Develop API-first applications employing schema-first design methodology using .NET 6/7/8, OpenAPI specifications, and Swagger documentation

• Maintain comprehensive technical documentation, API specifications, and codebase documentation utilizing AI-assisted documentation tools

EDUCATION / KNOWLEDGE

• BE / BTech with 6 to 9 years of relevant work experience

• Comprehensive knowledge of .NET 6/7/8 frameworks, C# 10-12 language features, ASP.NET Core, and Entity Framework Core

• Expertise in MS SQL Server database design, T-SQL programming, query optimization, and indexing strategies

CRITICAL EXPERIENCE

• Demonstrated experience developing production-grade AI-enhanced web applications using .NET 6/7/8 and React

• Proven track record with .NET Core 3.x / .NET 5/6/7/8 for building scalable enterprise applications and RESTful APIs

• Hands-on experience deploying and managing applications on Microsoft Azure cloud platform with Azure OpenAI Service integration

• Proficiency in MS SQL Server database development including schema design, stored procedures, triggers, and performance tuning

• Practical experience integrating Claude 4.6 API (Anthropic) or Azure OpenAI Service into .NET applications with production deployment

• API development expertise using schema-first approach, OpenAPI/Swagger specifications, and API versioning strategies

• Working knowledge of Azure DevOps or GitHub for source control and automated deployment workflows

COMPETENCIES

Working knowledge of: Front End

• Bootstrap 5 • jQuery, AJAX • Responsive design principles • CSS3, SASS/LESS • Azure DevOps (Repos, Pipelines, Boards) • GitHub / Git workflows

Backend

• C#, .NET 6/7/8 • ASP.NET Core Web API • Entity Framework Core 6-8 • API schema-first approach (OpenAPI/Swagger) • Design patterns (MVC, Repository) • Authentication/Authorization (OAuth 2.0, JWT, Azure AD) • SOLID principles, Clean Architecture

Database

• MS SQL Server 2016-2022 • T-SQL programming • Database design & normalization • Stored procedures, functions, triggers • Indexing strategies • Query optimization & execution plans • Performance tuning

Additional Skills

• xUnit, NUnit unit testing frameworks • Agile/SCRUM methodologies • Microservices architecture patterns • RESTful API design principles • Postman, Swagger for API testing • Application performance monitoring