Senior Software Engineer

Job Title:

Senior Full Stack Developer / Technical Lead – .NET & React

Experience:

10+ Years

Location: Chennai – T.Nagar / WFO

Job Summary:

We are looking for a highly experienced Senior Full Stack Developer / Technical Lead with strong expertise in .NET technologies and React. The ideal candidate should be comfortable handling multiple projects simultaneously, possess excellent communication skills, and be capable of leading and mentoring a team while delivering scalable, high-quality solutions.

Key Responsibilities:

·       Design, develop, and maintain scalable web applications using .NET (C#, ASP.NET Core, Web API) and React

·       Lead end-to-end project execution across multiple parallel projects

·       Handle project switching efficiently with minimal ramp-up time

·       Participate in architecture, design, and technical decision-making

·       Manage, mentor, and guide a team of developers

·       Conduct code reviews, ensure best practices, and maintain coding standards

·       Collaborate with Product Owners, QA, UI/UX, and Stakeholders

·       Ensure performance optimization, security, and application stability

·       Take ownership of delivery timelines and technical quality

·       Support production issues and provide root cause analysis

Required Technical Skills:

·       Strong hands-on experience in:

o  C#, ASP.NET, ASP.NET Core, Web API

o  React.js, Redux / Context API

o  HTML, CSS, JavaScript, TypeScript

·       Experience with RESTful APIs, Microservices (preferred)

·       Database expertise: SQL Server (mandatory), NoSQL (added advantage)

·       Experience with Entity Framework / Dapper

·       Familiarity with Azure / AWS (preferred)

·       Knowledge of CI/CD pipelines, Git, DevOps practices

·       Understanding of Agile / Scrum methodologies

Leadership & Soft Skills:

·       Excellent verbal and written communication skills

·       Proven experience in team handling and mentoring

·       Strong problem-solving and decision-making abilities

·       Ability to manage multiple stakeholders and priorities

·       Ownership mindset and accountability-driven approach

Nice to Have:

·       Experience working in product-based or fast-paced service environments

·       Exposure to high-availability and scalable systems

·       Client-facing experience

Experienced Senior Full Stack Engineer to Build & Backend for Event Ticketing Platform Using Claude Code

Overview

We have the frontend already built in Replit for both user and admin experiences. We are looking for a very experienced software engineer to design, build, and scale a production ready backend for a high concurrency event ticketing platform.

This role is for a true senior engineer who actively uses Claude Code as part of their daily development workflow, understands how to review and harden AI assisted output, and can ship systems that hold up under real world load, QA, and security testing.

This is not a prototype or demo system. This backend must be reliable, scalable, secure, and extremely well documented.

What You Will Be Building

• Backend services for an event ticketing platform

• Multi tenant architecture supporting thousands of organizers and events

• High concurrency purchase and checkout flows

• Secure user, admin, and system level access controls

• Production deployments with secrets management, middleware, and security layers

• Observability, logging, and metrics suitable for QA and load testing

• A thoroughly documented backend that future engineers can onboard into quickly

Core Engineering Requirements

• 10 plus years of professional software engineering experience

• Expert level experience using Claude Code or equivalent AI coding agents in real production workflows

• Deep experience building backends with Node.js

• Strong experience with Supabase and PostgreSQL

• Experience deploying and scaling applications on Vercel

• Proven experience extending existing codebases safely

• Strong API design and database performance fundamentals

• Ability to reason clearly about concurrency, transactions, and failure modes

Scalability and Performance Expectations

The backend must be designed to support:

• Hundreds of thousands of ticket purchases

• Thousands of concurrent users and tenants

• Large traffic spikes during on sale windows

• Load testing across all major latency percentiles including p90, p95, and p99

• Extremely low tail latency under high concurrency

• Graceful degradation and recovery under stress

You should be comfortable designing and implementing caching strategies, queue based workflows, idempotent operations, locking mechanisms, and transactional safety.

Security and Production Readiness

You must be able to:

• Set up production environments with proper secrets management

• Implement middleware for authentication, authorization, and rate limiting

• Design secure communication between frontend and backend

• Apply industry best practices for security hardening

• Prepare the system to pass penetration testing

• Maintain clean separation of concerns and least privilege access

Documentation and Developer Experience Requirements

High quality documentation is a hard requirement for this role.

You must have experience:

• Using AI powered documentation tools to generate and maintain technical documentation

• Producing clear architectural overviews and system diagrams

• Writing detailed README files and onboarding guides

• Documenting APIs, data models, and critical flows

• Keeping documentation in sync with code changes over time

We expect the backend to be easy to understand, easy to extend, and well explained for future engineers.

How We Evaluate Candidates

We are looking for engineers who can demonstrate:

• Real production systems they have built or scaled

• Clear judgment in how they use Claude Code and validate AI generated output

• Strong opinions on production readiness backed by experience

• The ability to move fast without sacrificing quality or safety

A short paid technical task may be used that involves real backend work with production quality code and documentation.

Full Stack Engineer (Frontend Strong, Backend Proficient)

5-10 Years Experience

Contract: 6months+extendable

Location: Remote

Technical Requirements Frontend Expertise (Strong)

*Need at least 4 Yrs in React web developement, Node & AI.*

● Deep proficiency in React, Next.js, TypeScript

● Experience with state management (Redux, Context API)

● Frontend testing expertise (Jest, Cypress)

● Proven track record of achieving high Lighthouse performance scores Backend Proficiency

● Solid experience with Node.js, NestJS (preferred), or ExpressJS

● Database management (SQL, NoSQL)

● Cloud technologies experience (AWS, Azure)

● Understanding of OpenAI and AI integration capabilities (bonus) Full Stack Integration

● Excellent ability to manage and troubleshoot integration issues between frontend and backend systems

● Experience designing cohesive systems with proper separation of concerns

JOB DESCRIPTION :

COMPANY DESCRIPTION

Gurucul is transforming enterprise security with user behavior and predictive analytics. If you enjoy

working in a fast-paced, rapidly growing and progressive environment, this is the position for you.

Gurucul offers competitive compensation packages and full benefits for all full-time employees.

JOB DESCRIPTION: Technical Lead

Seeking a Java Technical Lead Developer, who will create scalable multi-tier web applications in an agile

software development environment. Applicant should have significant hands-on experience in designing

and coding server components.

The ideal candidate must be able to design and develop enterprise-scale information security software

in collaboration with the engineering team in India and with their counterparts in the US.

SKILLS AND QUALIFICATIONS

• 8 to 14 years experience working as a Java developer on Web/EE applications, ideally multi-tenant SaaS products and at least 3 years as a tech lead.
• Expert in core Java development and Java EE technologies.
• Solid experience building server-side components for enterprise applications.
• Good understanding of browser-side development using any one of the frameworks like Angular, React etc.
• Good understanding of Single-page applications architecture.
• Good understanding of HTML/HTML5, CSS/CSS3, Javascript and object-oriented javascript Should be well versed with server-side and client-side design patterns and anti-patterns.
• Experience using Spring and Hibernate in a commercially available software product.
• Good experience in MVC Architecture like Grails, Spring MVC, Servlets and JSP API programming.
• Exposure to maven/Gradle build script.
• Exposure/Experience with Hadoop and related big data technologies.
• Experience with Git/Gitlab.
• Experience in JMS, Kafka, and Logstash would be considered an added advantage.
• Good understanding of REST APIs and JSON.
• Expert in RDBMS like MySQL 8, SQL, SQL query design, tuning, and experience working with very large databases.
• Experience in multi-threading, and building cluster-aware applications.
• Strong communication skills.
• BS/MS degree in Computer Science, Engineering or related discipline.
• Experience with DevOps pipelines using tools like Jenkins, Gitlab, and Nexus would be a big plus.
• Experience in working in SCRUM as a scrum master.

WHAT TO EXPECT

• Provide inputs in the architecture and design of enterprise applications targeting Fortune 500 companies.
• Development of web-based Enterprise Applications using cutting-edge technologies.
• Gain an insight into enterprise security challenges as it relates to information/Application and infrastructure protection.
• Work closely with a brilliant team based in the USA and India that has successfully launched several software companies.

LOCATION

• The position is based in Pune (India)

Synapsica is a growth stage HealthTech startup founded by alumni from IIT Kharagpur, AIIMS New Delhi, and IIM Ahmedabad. We believe healthcare needs to be transparent and objective, while being affordable. Every patient has the right to know exactly what is happening in their bodies and they don’t have to rely on cryptic 2 liners given to them as diagnosis.

Towards this aim, we are building an artificial intelligence enabled cloud based platform to analyze medical images and create 2.0 of advanced radiologist reporting.

We are backed by Y Combinator and other investors from India, US and Japan. We are proud to have GE, AIIMS, the Spinal Kinetics as our partners.

Join us, if you find this as exciting as we do!

Description:

We are looking for a skilled computer programmer who is comfortable with both front and back end programming. Hands-on with UI and server-side is highly desirable.

You will get hands-on experience in the latest technologies and skills like ReactJS, NodeJS, MongoDB, REST API etc. This role is ideal for you if you have a background in Full Stack development and are looking for the next level of career growth in a fast paced, learning based and merit driven work environment.

Responsibilities:
- Developing front end app components.
- Developing backend apis and middlewares.
- Designing and scaling databases and servers.
- Ensuring responsiveness and cross-platform compatibility of applications.
- Owning and delivering end-to-end products, features, enhancements.

Requirements:
- Degree in Computer Science or related discipline with 3-7 years of experience.
- Proficiency with fundamental front end languages such as HTML, CSS and JavaScript
- Hands on with Reactjs or similar framework/library.
- Proficiency with server side languages such as Nodejs, Python, PHP.
- Prior experience with at least one no-sql database such as MongoDB.
- Excellent verbal communication skills.
- Good problem solving skills.
- Attention to detail.
- Very high sense of ownership.
- Deep interest and passion for technology

• 6-13 years’ experience designing for high performing digital products across various domains
• Degree in design-related field or equivalent experience.
• Good understanding of design patterns, industry trends, and great approaches to solve problems
• Expertise in core UX disciplines including information architecture, interaction design, application of design systems, and UI design.
• Creative problem-solver with a strong eye for detail
• Experience and understanding of Responsive Web Design
• Experience with iOS and Android Mobile App Design
• Must have Software Proficiency with Figma, Sketch, Miro
• Proficient in wire-framing and comfortable producing concept sketches and user flows
• A passion for UX and User Research
• A strong portfolio which demonstrates work across a range of clients
• Strong experience of user research and usability testing
• Passionate about Design Thinking.
• Excellent verbal and written communications skills.
• Experience with accessibility, localization, and internationalization.
• Experience working directly with developers to ensure the successful implementation of a design specifications
• Familiarity with content strategy, content management, taxonomy and large scale digital publishing.
• Knowledge of HTML, CSS, and JavaScript.
• Knowledge with QA and testing methods is a plus.
• All candidates will be required to submit a portfolio of work samples and/or links to their work.

What you need to have:

We are looking for a skilled Full Stack Developer with experience with ReactJS, Nodejs/Express, working exposure to NoSQL, AWS and Python who will be responsible for developing and designing web applications for our company. In order for you to succeed in this role, you will need to be proficient in JavaScript, HTML, CSS, and have solid knowledge and experience in programming applications.

Responsibilities:

• Build the front-end of applications through appealing visual design
• Design client-side and server-side architecture
• Design, develop and manage well-functioning databases and applications
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade software
• Create security and data protection settings
• Build features and applications with a mobile responsive design
• Write technical documentation
• Work with data scientists and analysts to improve software
• Ship code quickly and iteratively every day working with large real world datasets.

Requirements:

• Proficient in Javascript (React/Angular/Vue) Preferable good experience with Nodejs, Express)
• Bachelor degree in Web development or related field, or relevant experience.
• Solid knowledge and experience in programming applications.
• Proficient in NoSQL (MongoDB) and SQL (MySQL, Postgres)
• Dedicated team player.
• Ability to thrive in a fast-paced environment.
• Solid ability in both written and verbal communication.
• Knowledge of programming language and technical terminology.
• Able to develop ideas and processes and clearly express them.
• High degree of independent judgment.
• Able to solve complex problems.
• Experience with Python, RoR and/or PHP desired.