Fullstack Developer - MERN

Position Summary: Senior Software Engineer (Full Stack) We are seeking a highly skilled Senior Software Engineer to execute our strategy  preferably experienced in Financial Services/Procurement domain, to build a modern SaaS platform using latest technologies like ReactJS, Angular, Django, Python with Postgres and AWS as the platform. Athena, Lambda, Python, Spark and PowerBI. As a Full Stack Engineer, you’ll be responsible for designing, developing, and maintaining key features of our cloud-based SaaS product. You’ll work across the stack — from building rich client-side applications in ReactJS to crafting performant and secure APIs in Django. You will also play a key role in architectural decisions, DevOps integration, and driving engineering best practices across the team.

Technical Skills: Must Have: Expert – ReactJS, Django, Python, Shell Script, AWS, S3, Lambda, Postgres Significant work Experience – Jenkins, Power BI

 Responsibilities:

• Design and develop end-to-end web applications using ReactJS (frontend) and Python/Django (backend)

• Build and maintain RESTful APIs and integrate third-party services

• Work with PostgreSQL to model data and write efficient queries

• Implement scalable, secure, and maintainable backend services on AWS

• Collaborate with product managers, designers, and fellow engineers to deliver new features

• Write unit, integration, and end-to-end tests to ensure code quality and reliability

• Conduct code reviews, debug issues, and optimize performance across the stack

• Contribute to DevOps workflows including CI/CD pipelines, containerization, and monitoring Internal Use Only Qualifications/Experience:

Must have - 5–7 years of full stack development experience, preferably in a SaaS or product-first environment

- Strong proficiency with JavaScript, ReactJS, and component-based architecture

- Hands-on experience with Python and the Django web framework

- Solid understanding of PostgreSQL (or similar relational databases)

- Practical knowledge of AWS services (EC2, S3, RDS, Lambda, etc.)

- Familiarity with Git, CI/CD pipelines, Docker, and Linux-based environments

- Clear communication skills and a collaborative mindset

Good to have

- Experience with performance tuning in Django or PostgreSQL - Exposure to Infrastructure-as-Code (e.g., Terraform, CloudFormation) Nice to have 

- Understanding of frontend testing tools (Jest, Cypress) and backend testing strategies - Knowledge of security best practices for SaaS apps

Location: Bangalore 

Role : .NET Developer Location – Gurgaon Key Responsibilities What role will you play? In this role, you will collaborate with stakeholders and analysts to define requirements, while working closely with the team on development, testing, and deployment activities. You will support production operations, engage directly with users, and help maintain system stability, using this experience as a key learning opportunity. You will also deliver high-quality platform enhancements, build strong relationships with technical and non-technical stakeholders, and act as a subject matter expert to ensure best practices and professional standards are consistently upheld. • 9–14 years of hands-on experience in C# and .NET full-stack development • Strong extensive experience in financial markets and low-latency, multithreaded systems • Solid expertise in SQL and database design and optimization • Proven experience leading small development teams • Familiarity with message-based integration, including protocols such as FIX • Actively learn and apply financial domain knowledge • for this role we are specifically looking for candidates with strong domain expertise as well. • This is a Front Office Trading Engineering role, so it’s important that the candidate understands key business concepts and nuances, such as sell-side vs buy-side, equities vs derivatives, and instruments like futures, options, and swaps. • Ability to work in an agile environment and handle end-to-end development responsibilities Required Skills & Experience • 3–10 years of professional experience in .NET development • Strong hands-on experience with C#, ASP.NET, and .NET Core • Excellent understanding of data structures, algorithms, and problem-solving techniques • Experience and strong interest in algorithm-driven or computation-intensive applications • Excellent communication skills, with the ability to bridge business language and technical implementation • Proven ability to learn quickly and work effectively in a highly collaborative environment • Strong inclination to work within the financial services domain; experience with repo products, secured funding, or lending is highly regarded

Job Description :

Responsibilities :

- Design and develop Python-based microservices

- Build and operate gRPC / Protobuf-based APIs

- Implement asynchronous processing, concurrency, and job orchestration

- Design systems with retries, idempotency, and fault tolerance

- Work with and integrate native C/C++ components with Python services

- Design and optimise PostgreSQL schemas and queries

- Contribute to React-based frontend applications (TypeScript/JavaScript)

- Own features end-to-end : design, development, deployment, and monitoring

- Debug issues across application, system, and performance layers

- Build and maintain CI/CD pipelines and automated tests

Requirements :

- Strong experience in Python backend development (sync + async)

- Hands-on experience with gRPC / Protobuf-based APIs

- Experience with FastAPI / Flask / Django

- Strong understanding of microservices and distributed systems

- Experience with PostgreSQL and data modeling

- Exposure to React / JavaScript / TypeScript

- Knowledge of concurrency, multi-threading, and system design

- Strong understanding of Linux systems and debugging

- Experience in production environments (performance tuning, issue resolution)

- Exposure to C/C++ or Python-native integrations (preferred)

Qualification :

- Engineering Graduates from Tier 1 & Tier 2 Colleges/Deemed Universities only

- Open for candidates from outstation.

- Experience range : 12 - 15 years (but not more than 15 years of experience)

- Strictly Individual contributors, Handson coding. 80% Individual Contributor & 20% Architecture, Design, Systems

Position -  Full stack Developer

Location - Navi Mumbai

Freshers  0-3 yrs

Who are we

Based out of IIT Bombay, HaystackAnalytics is a HealthTech company creating clinical genomics products, which enable diagnostic labs and hospitals to offer accurate and personalized diagnostics. Supported by India's most respected science agencies (DST, BIRAC, DBT), we created and launched a portfolio of products to offer genomics in infectious diseases. Our genomics based diagnostic solution for Tuberculosis was recognized as one of top innovations supported by BIRAC in the past 10 years, and was launched by the Prime Minister of India in the BIRAC Showcase event in Delhi, 2022.

Objectives of this Role:

• Work across the full stack, building highly scalable distributed solutions that enable positive user experiences and measurable business growth
• Ideate and develop new product features in collaboration with domain experts in healthcare and genomics 
• Develop state of the art enterprise standard front-end and backend services
• Develop cloud platform services based on container orchestration platform 
• Continuously embrace automation for repetitive tasks
• Ensure application performance, uptime, and scale, maintaining high standards of code quality by using clean coding principles and solid design patterns 
• Build robust tech modules that are Unit Testable, Automating recurring tasks and processes  
• Engage effectively with team members and collaborate to upskill and unblock each other

Frontend Skills 

• HTML 5  
• CSS framework ( LESS/ SASS / Tailwind ) 
• Es6 / Typescript 
• Electron app /Tauri)
• Component library ( Bootstrap , material UI, Lit ) 
• Responsive web layout ( Flex layout , Grid layout ) 
• Package manager --> yarn / npm / turbo
• Build tools - > (Vite/Webpack/Parcel)
• Frameworks -- > React with Redux of Mobx / Next JS
• Design patterns 
• Testing - JEST / MOCHA / JASMINE / Cypress
• Functional Programming concepts (Good to have)
• Scripting ( powershell , bash , python )

Backend Skills 

• Nodejs - Express / NEST JS 
• Python / Rust
• REST API 
• SOLID Design Principles
• Database (postgresql / mysql / redis / cassandra / mongodb ) 
• Caching ( Redis ) 
• Container Technology ( Docker / Kubernetes )  
• Cloud ( azure , aws , openshift, google cloud ) 
• Version Control - GIT 
• GITOPS 
• Automation ( terraform , ansible ) 

Cloud Skills 

• Object storage
• VPC concepts 
• Containerize Deployment
• Serverless architecture 

 Other Skills 

• Innovation and thought leadership
• UI - UX design skills  
• Interest in in learning new tools, languages, workflows, and philosophies to grow
• Communication 

To know more about us- https://haystackanalytics.in/

Full Stack Engineer

We are looking for a self-starter who can join a fast-paced startup environment in order to design and build a scalable cloud-based product. You’ll be part of a cross functional team that’s responsible for the full product development life cycle, from conception to deployment.

Key Responsibilities: -

Work with the development team to design & build new features using Node JS along with enhancing the existing platform. - Develop, test and optimize code for performance, maintainability and standards. - Participate in code reviews and make recommendations. - Use CI/CD techniques to ensure clean working environments and agile deployments. - Debug and troubleshoot cloud-based applications. - Follow Agile development techniques, participate in daily calls and assist product owners in story grooming.

Skill set: -

3+ years of product development experience. - Strong problem-solving and analytical skills. - Strong programming experience in Node JS/Java/Python. - Experience with React JS. - Experience in building cloud-based applications on AWS. - Experience with NoSQL data stores, preferably Dynamo DB. - Experience with any CI / CD tool.

Good to have: - Experience in GraphQ

JOB DESCRIPTION

Ideal skills:

1) 2-5 years of professional JavaScript development experience

2) Understanding of asynchronous programming and its quirks and workarounds

3) Comfortable working through the entire stack from the user interface through systems levels

4) Understanding accessibility and security compliance

5) Strong Logical and Analytical Skills

6) Experience in consuming web services (REST) and processing data (JSON)

7) Experience with SQLite, NoSQL, Redis or other databases

8) Proven experience in building API services using NodeJS Express and related frameworks

9) Good understanding of NodeJS asynchronous runtime

10) Good understanding of JS concepts on callbacks and closures

11) Experience in debugging issues related to memory leaks

12) Experience in building highly scalable and high throughput services with sub-second response times

13) Experience with ElasticSearch/Solr

14) Experience working in a collaborative team environment

15) Ability to understand and analyse issues across multiple vendors and interfaces

16) Experience with NoSQL queries

17) Experience with AWS

18) Experience with Android Development

19) Experience in managing/mentoring small teams

In depth knowledge of all of the above is not mandatory but the nature of the work will involve learning and getting involved with all of the above. You would be working directly with key members of the management team to define and drive technical strategy.

Experience in the mobile space is mandatory. Please only apply if you have been part of building a mobile product. Since our product is mobile only, it is essential that you understand implications on the front end.