Senior Backend Developer(C#&.Net)

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.

Strong Backend Node.js Developer Profile

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Mandatory (Experience 1) – Must have 7+ years of hands-on Backend Engineering experience using Node.js building production-grade systems for B2C products at meaningful consumer scale

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Mandatory (Experience 2) – Must be AI-native in their own engineering workflow: already uses LLMs and agentic tooling across the SDLC, from design and code generation through testing and debugging

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Mandatory (Experience 3) – Must have owned backend architecture end to end, including greenfield builds. Should be able to make early architecture calls and reason clearly about service boundaries, data flow, caching, queueing, failure modes, scalability, and reliability trade-offs under real constraints.

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Mandatory (Experience 4) – Must have a solid understanding of backend fundamentals, including API development, service-oriented architecture, data structures, algorithms, and clean coding practices

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Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs and backend services, including integrations with external systems and third-party platforms

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Mandatory (Experience 6) – Must have strong experience working with databases (SQL and/or NoSQL), including efficient data modeling, query optimization, and performance tuning

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Mandatory (Company) – Must have worked in B2C product companies / startups at meaningful consumer scale. (WealthTech, FinTech, or high-growth consumer product background is highly preferred)

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Mandatory (Stability) – Must have a stable career history, with consistent tenure across previous companies; frequent job-hopping will not be considered

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Mandatory (AI Product) – Must have experience building and shipping products that use LLMs and agentic workflows to end users.

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Mandatory (College) – ) - B.Tech or Dual degree (Btech and Mtech or Integrated Msc/MS) from Tier 1 Engineering Institutes (IITs, not NITs). Candidates from other institutions will not be considered unless they come from top top-tier product companies

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Mandatory (Compensation Alignment) – Candidate must be comfortable with the compensation structure where the company matches their current CTC and provides ESOPs, without any salary hike

Senior / Staff Software Engineer – Backend Engineering

Experience: 7+ years

Location: India

Role Type: Individual Contributor | Hands-on Engineering

About the Role

Oddr is looking for a deeply hands-on Senior / Staff Software Engineer who combines strong backend engineering fundamentals with an AI-first way of building software.

This is not a traditional development role where AI is used only for code completion. We are looking for engineers who can understand a problem, design the right solution, define architectural and security guardrails, and then use AI aggressively to accelerate implementation without compromising quality.

You will be expected to code regularly, own solutions end-to-end, build POCs, drive technical design, review critical code, and help raise the engineering bar across the team.

This is not a people-management role.

What You’ll Do

• Design and build scalable, secure backend systems using C# / .NET.
• Own features from problem definition and architecture through coding and production delivery.
• Use AI coding tools such as Claude Code, Codex, Cursor or GitHub Copilot to accelerate development.
• Define the right context, constraints, tests and guardrails around AI-generated code.
• Build POCs and evaluate technical approaches before scaling them into production.
• Drive system design, API design, data modelling and integration decisions.
• Review code for correctness, security, performance and maintainability.
• Build automated tests, observability and validation into the development lifecycle.
• Mentor engineers through technical reviews, pairing and architecture discussions.
• Identify opportunities to create reusable engineering patterns, automation, agents or developer tooling.

What We’re Looking For

• 7+ years of software engineering experience building production systems.
• Strong hands-on expertise in C# and .NET / .NET Core.
• Strong system design and architecture skills.
• Experience with distributed systems, APIs, databases, asynchronous processing and cloud-native applications.
• Good understanding of Azure, CI/CD, containers and modern software delivery practices.
• Strong debugging and problem-solving skills.
• Experience using AI coding tools as a meaningful part of day-to-day software engineering.
• Ability to critically review AI-generated code and identify architectural, security or quality issues.
• Strong understanding of software design, testing and engineering best practices.

Nice to Have

• Experience with React / TypeScript.
• Experience in legal-tech, fintech, billing, payments or enterprise SaaS.
• Exposure to AI agents, RAG, MCP or LLM-powered applications.
• Experience building reusable engineering platforms, tooling or automation.
• Familiarity with SOC 2, ISO 27001 or other security/compliance environments.

What Great Looks Like

You can take a complex problem from:

Problem → Design → POC → Architecture → Code → Validation → Production

You know when to rely on engineering judgment, when to challenge the AI, and when to use AI to dramatically accelerate execution.

At Oddr, we are looking for engineers who can think deeply, build quickly and ship safely.

Eligibility:

• Only IIT / NIT graduates
• Immediate joiners preferred

Mandatory Skills:

• Strong experience in Core Java
• Spring Boot & Microservices
• REST APIs
• SQL / Relational Databases
• Data Structures & Algorithms
• Strong problem-solving skills
• Experience in designing scalable backend applications

Good to Have:

• Cloud (AWS/Azure/GCP)
• Kafka / Messaging Systems
• Docker & Kubernetes

Interested candidates who meet the above criteria can share their updated resume along with:

• Total Experience
• Current CTC
• Expected CTC
• Notice Period
• Current Location

Technical Expertise

• Proficiency in Node.js or Python – Hands-on experience with backend development frameworks

and best practices.

• Expertise in SQL/NoSQL Databases – Strong experience with MySQL, PostgreSQL, MongoDB, or

DynamoDB.

• ElasticSearch & API Development – Strong knowledge of REST APIs, ElasticSearch, and high-

availability system design.

• Cloud & DevOps – Hands-on experience with AWS, Kubernetes, Docker, and CI/CD pipelines.

• Data Structures & Algorithms – Strong command over data structures, algorithms, OOD, and

design patterns.

• Version Control & Deployment – Experience with Git, GitHub Actions, and other deployment

systems.

• High-Performance Systems – Implemented solutions that handle high availability, concurrency,

and low-latency requirements.

Location: Bangalore

Experience: 5+ years

Employment type: Full-time, permanent

Work Hours: 10.00 AM to 7.00 PM (General Shift)

website: www.amazech.com

Qualifications: 

B.E./B.Tech/M.E./M.Tech in Computer Science, Information Technology, Electrical or Electronic with a good academic background. 

Key Responsibilities:

·       Develop and maintain backend services using ASP.NET Core (latest LTS), RESTful APIs, and microservices architecture

·       Implement authentication and authorization using OAuth2 and Azure AD

·       Design and maintain clean, scalable domain models and service layers

·       Lead and execute .NET Framework to .NET Core migrations, ensuring stability and backward compatibility

·       Optimize backend services for performance, scalability, and security

·       Contribute to CI/CD pipelines using Azure DevOps with automated builds and deployments

·       Support production environments, perform root cause analysis, and ensure operational stability

·       Develop and maintain frontend applications using Angular or ReactJS, ensuring responsive and high-performance user interfaces

·       Integrate frontend components with backend RESTful APIs and microservices

·       Collaborate closely with UX/UI designers and backend teams to deliver end-to-end features

·       Maintain high-quality technical documentation and API specifications

Required Skills and Experience: 

·       Strong hands-on experience with ASP.NET Core (latest LTS), REST APIs, and Microservices

·       Minimum hands-on experience in frontend development using Angular or ReactJS

·       Proficiency in HTML5, CSS3, JavaScript/TypeScript

·       Experience integrating frontend applications with backend services

·       Proficiency in Azure App Services, Azure SQL, and Key Vault

·       Experience with Git and Azure DevOps CI/CD pipelines

·       Solid understanding of unit and integration testing

·       Strong performance tuning and secure coding practices

Other Requirements:

·       Exposure to Node.js preferred

·       Experience using GitHub Copilot and modern developer tooling preferred

At BigThinkCode, our technology solves complex problems. We are looking for talented back-end (node.JS) engineer to join our at Chennai.

Please find below our job description, if interested apply / reply sharing your profile to connect and discuss.

Company: BigThinkCode Technologies

URL: https://www.bigthinkcode.com/

Experience required: 3-4 years

Work location: Chennai

Joining time: Immediate – 4 weeks

Work Mode: Work from office / Hybrid

Must have skills:

·      Hands on expertise in OOJS, node.js, distributed systems.

·      Event drive architecture (EDA) microservices project experience MUST

·      Any programming: Typescript or nodeJS or Golang

·      Hands on experience using docket containers and Kubernetes.

·      Aware about Asynchronous and Loose Coupling.

·      Familiar with API’s gateway and microservice design patterns.

A skilled Node.js Developer with 5+ years of experience in building scalable applications using event-driven architecture within distributed systems. The ideal candidate should be comfortable in high-performance backend services and have a strong understanding of asynchronous programming patterns.

Experience or exposure to knowledge embedding and vectorization techniques is a strong plus, especially in the context of modern data-driven or AI-powered systems.

Required Skills

·      5+ years of hands-on experience with Node.js

·      Strong understanding of event-driven architecture and non-blocking I/O

·      Experience working with distributed systems and microservices architecture

·      Proficiency in RESTful API design and implementation

·      Experience with databases such as MongoDB, PostgreSQL, or MySQL

·      Experience with containerization tools like Docker and orchestration tools like Kubernetes

Key Responsibilities

·      Design, develop, and maintain server-side applications using Node.js

·      Build and optimize scalable, event-driven systems in distributed environments

·      Implement asynchronous workflows, message queues, and pub/sub architectures

·      Collaborate with cross-functional teams to define and deliver backend solutions

Good to Have 

·      Experience with knowledge embedding and vectorization techniques

·      Familiarity with vector databases (e.g., Pinecone, Weaviate, FAISS)

·      Understanding of cloud platforms (AWS, Azure, or GCP)

Why Join Us:

·      Collaborative work environment.

·      Exposure to modern tools and scalable application architectures.

·      Medical cover for employee and eligible dependents.

·      Tax beneficial salary structure.

·      Comprehensive leave policy

·      Competency development training programs.

Key Responsibilities

● Lead the architecture, design, development, and delivery of scalable backend services

using Python.

● Own technical direction and architectural decisions for backend systems and services.

● Design and build robust RESTful APIs, microservices, and distributed systems

capable of handling high-scale workloads.

● Design and implement real-time communication systems, including WebSocket-based

services, where required.

● Drive system performance, scalability, reliability, availability, and security.

● Lead performance optimization, capacity planning, monitoring, debugging, and

production issue resolution.

● Establish and promote best practices around code quality, testing, observability, CI/CD,

and production readiness.

● Collaborate closely with frontend, product, DevOps, infrastructure, and other

cross-functional teams to deliver end-to-end solutions.

● Mentor and provide technical guidance to engineers, contributing to overall team growth

and engineering excellence.

● Review code and architecture designs, identify technical risks, and drive improvements

across backend systems.

● Take ownership of complex technical problems and deliver reliable, maintainable,

production-grade solutions.

Required Skills & Qualifications

● 5+ years of software engineering experience, with significant experience in backend

development.

● Strong expertise in Python and experience building production-grade backend

applications.

● Proven experience designing and developing REST APIs and microservices

architectures.

● Strong understanding of distributed systems, scalability, fault tolerance, and

high-availability architectures.

● Hands-on experience with WebSockets and real-time backend integrations.

● Strong experience with SQL/NoSQL databases, caching systems, and data-intensive

applications.

● Experience with performance optimization, monitoring, logging, debugging, and

production operations.

● Strong understanding of software engineering principles, design patterns, and clean

architecture.

● Proven ability to lead technical initiatives and make sound architectural decisions.

● Strong communication, collaboration, and technical leadership skills.

● Experience mentoring engineers and conducting effective code and design reviews.

Backend Developers

• Contract To Hire (Initial Engagement: 6 months)

Experience: 5+ years

Mandatory Skills:

● Node.js

● Python

● MongoDB

● PostgreSQL

● REST API design and development

● Backend architecture and service design

● Database design, indexing and query optimisation

● Performance tuning

● Authentication/authorisation

● Third-party integrations

● Asynchronous processing and background jobs

● Logging, monitoring and debugging

● Git and collaborative development

● Scalable, maintainable and testable backend services

● Architecture discussions, code reviews, debugging and production support

Good to have:

● Microservices

● Docker

● Cloud platforms

● Redis

● Message queues

● CI/CD

● Observability

We are looking for a Backend Software Development Engineer with 6+ years building scalable, high-availability server-side systems. You'll design and own microservices and REST APIs, model data in SQL, and deploy on AWS, partnering with product and frontend teams end-to-end.

Mandatory skills

• 6+ years of backend development in Java and/or Python

• Strong hands-on experience designing microservices and RESTful APIs

• Solid database design and SQL optimization

• Production experience on AWS (or equivalent cloud)

• Strong CS fundamentals — data structures, concurrency, system design

• Experience owning services from design through production support