
Sr Backend Engineer
at Hiring for a Crypto based company



You have 5 years or more of Backend end development experience with expertise in designing and implementing high-performance applications.
Worked with and built high-performance products using Node Js/GoLang/ Python and have seen the product evolution cycle from PoC to Production
You have a deep understanding of design principles and can rightly judge/implement solutions to complex problems
You are capable of writing high-quality code that conforms to the standards and best practices in a particular language/framework.
You have experience building a product using a mainstream library or framework.
You love to own end to end responsibility, starting from defining the problem statement (either yourself or alongside your peers), development (PoC if needed), testing, releasing in staging & then production environment, and finally monitoring.
Previous work experience in product-based startups
Experience building for products that have scaled and have seen the product evolution
Understands the cryptocurrency landscapeOffers the best CTC in the market

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About the Company
F22 Labs is a startup software studio based in Chennai. We power startups worldwide by building high-quality software products. From web apps to mobile platforms, we help entrepreneurs turn their ideas into beautifully crafted solutions. If you're passionate about software development and eager to build real products that solve real problems, you’ll fit right in.
Position Overview
We are seeking a talented and experienced Senior Node.js Developer to join our growing engineering team. In this role, you will be instrumental in designing, developing, and maintaining the backbone of our applications. You'll leverage your 3-5 years of expertise to build robust, scalable, and high-performance backend services and APIs. You will also play a key role in making architectural decisions, mentoring junior developers, and driving best practices within the team. If you're eager to tackle complex problems, contribute to innovative projects, and lead by example, this position is for you.
Key Responsibilities
● Design, develop, test, deploy, and maintain highly scalable and reliable backend services, APIs, and systems using Node.js (with frameworks like Express.js or NestJS) and TypeScript.
● Architect and implement robust solutions for complex business requirements, ensuring code quality, performance, and security.
● Collaborate closely with cross-functional teams including front-end developers, product managers, QA engineers, and designers to deliver high-quality products.
● Lead and participate in code reviews, providing constructive feedback to ensure adherence to coding standards and best practices.
● Design and manage database schemas (SQL and NoSQL, e.g., PostgreSQL, MongoDB, Redis) and optimize database queries for performance.
● Develop and maintain comprehensive unit, integration, and E2E tests to ensure software quality and reliability.
● Work with containerization technologies like Docker and orchestration tools like Kubernetes for deploying and managing applications.
● Implement and maintain CI/CD pipelines for automated building, testing, and deployment of applications.
● Mentor and guide junior developers, fostering a culture of learning and continuous improvement.
● Troubleshoot, debug, and upgrade existing software, identifying and resolving performance bottlenecks.
● Stay up-to-date with emerging technologies, industry trends, and best practices in Node.js development and backend architecture.
● Contribute to architectural discussions and decisions, helping to shape the future of our backend systems.
Qualifications and Requirements
● 3-5 years of professional experience in backend development with a strong focus on Node.js.
● Expert proficiency in TypeScript.
● Proven experience with Node.js frameworks such as Express.js or NestJS (highly preferred).
● Strong understanding of asynchronous programming, event-driven architecture, and design patterns.
● Solid experience in designing, building, and consuming RESTful APIs; experience with GraphQL is a plus.
● Proficiency with both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, Redis) database technologies, including data modeling and query optimization.
● Hands-on experience with containerization technologies (Docker) and a good understanding of container orchestration (Kubernetes).
● Experience with CI/CD tools and practices (e.g., Jenkins, GitLab CI, GitHub Actions).
● Experience deploying and managing applications on cloud platforms (AWS, Azure, or GCP), including familiarity with relevant services (e.g., EC2, S3, Lambda, RDS).
● Strong problem-solving, analytical, and critical thinking skills.
● Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
● Proven ability to mentor junior team members.
● Familiarity with Git and collaborative development workflows.
Good to have:
● Experience with testing frameworks (e.g., Jest, Mocha, Chai) and a commitment to writing well-tested code.
● Experience with microservices architecture and distributed systems.
● Experience with serverless architecture (e.g., AWS Lambda, Azure Functions).
● Knowledge of message queue systems (e.g., Kafka, RabbitMQ, AWS SQS).
● Familiarity with Infrastructure as Code (IaC) tools like Terraform or CloudFormation.
● Understanding of front-end technologies (e.g., React, Angular, Vue.js) to facilitate better collaboration.
● Experience with performance monitoring and optimization tools.
● Active contributions to open-source projects or a strong portfolio of personal projects.
Why Join Us (Perks & Benefits)
● Flexible work timings.
● Fast-paced, hands-on learning environment.
● Fun, collaborative, and supportive team culture.
● Real-world impact from day one.
If you're looking to supercharge your development skills and work on meaningful software in a startup that values learning and creativity, we’d love to hear from you. Apply today!
Job Title: Sr. Node.js Developer
Location: Ahmedabad, Gujarat
Job Type: Full Time
Department: MEAN Stack
About Simform:
Simform is a premier digital engineering company specializing in Cloud, Data, AI/ML, and Experience Engineering to create seamless digital experiences and scalable products. Simform is a strong partner for Microsoft, AWS, Google Cloud, and Databricks. With a presence in 5+ countries, Simform primarily serves North America, the UK, and the Northern European market.
Simform takes pride in being one of the most reputed employers in the region, having created a thriving work culture with a high work-life balance that gives a sense of freedom and opportunity to grow.
Role Overview:
We are looking for a Sr. Node Developer who not only possesses extensive backend expertise but also demonstrates proficiency in system design, cloud services, microservices architecture, and containerization. (Additionally, a good understanding of frontend tech stack to give support to frontend developers is highly valued) We're currently seeking a seasoned Senior Node.js Engineer who not only possesses extensive backend expertise but also demonstrates proficiency in system design, cloud services, microservices architecture, and containerization. (Additionally, a good understanding of frontend tech stack to give support to frontend developers is highly valued)
Key Responsibilities:
- Develop reusable, testable, maintainable, and scalable code with a focus on unit testing.
- Implement robust security measures and data protection mechanisms across projects.
- Champion the implementation of design patterns such as Test-Driven Development (TDD) and Behavior-Driven Development (BDD).
- Actively participate in architecture design sessions and sprint planning meetings, contributing valuable insights.
- Lead code reviews, providing insightful comments and guidance to team members.
- Mentor team members, assisting in debugging complex issues and providing optimal solutions.
Required Skills & Qualifications:
- Excellent written and verbal communication skills.
- Experience: 4+yrs
- Advanced knowledge of JavaScript and TypeScript, including core concepts and best practices.
- Extensive experience in developing highly scalable services and APIs using various protocols.
- Proficiency in data modeling and optimizing database performance in both SQL and NoSQL databases.
- Hands-on experience with PostgreSQL and MongoDB, leveraging technologies like TypeORM, Sequelize, or Knex.
- Proficient in working with frameworks like NestJS, LoopBack, Express, and other TypeScript-based frameworks.
- Strong familiarity with unit testing libraries such as Jest, Mocha, and Chai.
- Expertise in code versioning using Git or Bitbucket.
- Practical experience with Docker for building and deploying microservices.
- Strong command of Linux, including familiarity with server configurations.
- Familiarity with queuing protocols and asynchronous messaging systems.
Preferred Qualification:
- Experience with frontend JavaScript concepts and frameworks such as ReactJS.
- Proficiency in designing and implementing cloud architectures, particularly on AWS services.
- Knowledge of GraphQL and its associated libraries like Apollo and Prisma.
- Hands-on experience with deployment pipelines and CI/CD processes.
- Experience with document, key/value, or other non-relational database systems like Elasticsearch, Redis, and DynamoDB.
- Ability to build AI-centric applications and work with machine learning models, Langchain, vector databases, embeddings, etc.
Why Join Us:
- Young Team, Thriving Culture
- Flat-hierarchical, friendly, engineering-oriented, and growth-focused culture.
- Well-balanced learning and growth opportunities
- Free health insurance.
- Office facilities with a game zone, in-office kitchen with affordable lunch service, and free snacks.
- Sponsorship for certifications/events and library service.
- Flexible work timing, leaves for life events, WFH, and hybrid options

Responsibilities:
• Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to understand project requirements and translate them into technical specifications.
• Design and develop server-side logic, APIs, and database schema to support the functionality and performance requirements of our SaaS platform.
• Write clean, modular, and well-documented code using any relevant programming language preferably Java with SpringBoot.
• Optimize the backend systems for maximum speed and scalability, ensuring high performance and responsiveness of the application.
• Implement data storage solutions using PostgreSQL or other relational databases, ensuring data integrity and security.
• Conduct thorough testing and debugging to identify and resolve any issues or bugs in the backend code.
• Stay up-to-date with emerging technologies, industry trends, and best practices in backend development and contribute to the continuous improvement of our development processes.
Requirements:
• Proven work experience as a Backend Developer or similar role, with a focus on server-side development.
• Proficiency in working with relational databases, particularly PostgreSQL, and writing efficient SQL queries.
• Familiarity with SaaS concepts and architecture.
• Experience with API design and development, including RESTful APIs.
• Solid understanding of software development principles, including object-oriented programming, design patterns, and data structures.
• Experience with version control systems, such as Git.
• Strong problem-solving and analytical skills, with keen attention to detail.
• Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.
• Bachelor's degree in Computer Science, Engineering, or a related field is preferred, but not mandatory
About the Role
We are looking for a Node Backend Developer to design, develop, and maintain the server-
side logic for our next-generation healthcare platform. You will work closely with cross-
functional teams to build high-performance, scalable, and secure applications that power
seamless experiences for hospitals, insurers, and healthcare professionals. The ideal
candidate has strong Node.js and Express expertise and can contribute to the
development of robust backend systems and APIs.
Responsibilities
Backend Development & API Design
• Design and implement RESTful and GraphQL APIs using Node.js and Express
• Develop microservices architecture for scalable and maintainable backend systems
• Optimize database queries and enhance performance of existing systems
• Write clean, maintainable code following best practices and design patterns
System Integration & Database Management
• Work with SQL and NoSQL databases (MySQL, PostgreSQL, MongoDB)
• Integrate with third-party services and APIs (hospital systems, insurance platforms)
• Implement caching mechanisms and message queues for improved performance
• Design and manage database schemas, migrations, and data models
Security & Compliance
• Ensure adherence to healthcare security standards (HIPAA, GDPR, ABDM, etc.)
• Implement authentication, authorization, and data encryption mechanisms
• Follow secure coding practices and conduct code security reviews
• Address security vulnerabilities and implement fixes
Collaboration & Process Improvement
• Work closely with frontend developers, DevOps engineers, and product managers
• Participate in code reviews, sprint planning, and technical discussions
• Contribute to CI/CD pipelines and deployment automation
• Document APIs, services, and system architecture
Required Skills & Qualifications
• 2+ years of experience in backend development using Node.js
• Strong proficiency with Express.js framework and RESTful API design
• Experience with relational databases (MySQL, PostgreSQL) and SQL
• Knowledge of microservices architecture and containerization (Docker)
• Understanding of version control systems (Git) and CI/CD workflows
• Strong problem-solving abilities and debugging skills
• Excellent communication and collaboration skills
Nice to Have
• Experience with AI/ML integration in backend systems
• Familiarity with healthcare or insurance industry applications
• Knowledge of cloud platforms (AWS, Azure, GCP)
• Experience with NoSQL databases (MongoDB, Cassandra)
• Understanding of event-driven architecture and message queues (Kafka, RabbitMQ)
• Proficiency in additional programming languages (Python, JavaScript)
What You'll Gain
• Opportunity to build scalable solutions for mission-critical healthcare operations
• Work in a fast-paced, innovative environment with cutting-edge technologies
• Exposure to AI-driven healthcare solutions and enterprise integrations
• Growth potential into Senior Backend Developer or Backend Team Lead roles
Senior Node JS developer
Job Description
- Working experience in Nodejs, MySQL, Postgres SQL
- Good knowledge of designing and writing restful API
- Working experience of GIT
- Will prefer candidates who have knowledge of GraphQL, Typescript
- Well-versed and experienced with unit testing, code coverage.
- Well versed with SOILD design principles and their application
- Knowledge of AuthO, typeORM required
- Good to have – some experience with Azure DevOps and/or azure functions.
-Working experience on Docker- good to have
About the company
It has set up a benchmark in the Medical and Health industry with its Digital revolutionary changes. It had a huge impact on Countries Education & the Health sector, as it has taken an effort to uplift & Developing Digital support in India's Medical Education with the sword of Technologies. Our products are being Designed & Developed to benefit the Medical Aspirant as well as its Country's Health Education system. With its continuous effort, many Medical Institutions have been successfully adopting a Digitalised advanced way of Teaching & Learning. Its MedWhiz LMS is very Effective & Essential for Medical Aspirants.
Experience : 3-4 Years
Responsibilities
● Integration of user-facing elements developed by a front-end developers with
server side logic
● Building reusable code and libraries for future use.
● Optimization of the application for maximum speed and scalability.
● Implementation of security and data protection.
● Design and implementation of data storage solutions.
Skills
● Basic understanding of front-end technologies and platforms, such as
JavaScript, HTML5, and CSS3.
● Proficient knowledge of a back-end programming language i.e Node
Js(Mandatory).
● Proficient Knowledge of NoSQL database i.e MongoDb (Mandatory).
● Proficient understanding of Rest API’s. (Mandatory).
● Proficient understanding of code versioning tools, such as Git.
● Basic understanding of AWS.
● User authentication and authorization between multiple systems, servers, and
environments.
● Integration of multiple data sources and databases into one system.
● Management of the hosting environment, including database administration
and scaling an application to support load changes.
● Data migration, transformation, and scripting.
● Setup and administration of backups.
● Outputting data in different formats.
● Understanding differences between multiple delivery platforms such as mobile
vs desktop, and optimizing output to match the specific platform.
● Creating database schemas that represent and support business processes.
● Implementing automated testing platforms and unit tests.
Regards
Team Merito

At Arcana we are building a privacy centric decentralised data store that allows developers to build more secure and privacy preserving apps for their users.
We are looking to onboard an experienced Golang developer to work on the core protocol we are building. You must:
- Have 3+ years of development experience
- Have 3+ years of Golang development experience in production
- Have worked on distributed systems in production
- Have experience with Goroutine and channels
- Have experience with applied cryptography
- Write clean code and documentation
- Have clear bias for TDD
- Find Git very easy to use
- Have knowledge of Unix/Linux fundamentals - shell scripting, CLI tools etc.
- Have some knowledge of devops
- Have some blockchain experience

About the Role
The Engineering team in Bangalore, India is building products for the Martial Arts
fans across the world. As part of the engineering team, you would be expected to have
deep technology expertise with a passion for building highly scalable products.
This is a unique opportunity where you can impact the lives of people across 150+
countries!
Responsibilities
Own architecture, design, development, and implementation of different
modules/features of the services
Design, develop, deploy and support web applications.
Discover opportunities for performance improvements
Recommend ways to improve reliability, efficiency and code quality
Focus on continuous delivery and reducing complexity
Carry out code reviews and manage pull requests
Build applications based on micro-services architecture.
Requirements
Overall 1~3 years of experience in Backend development.
B. E/B. Tech in CS or equivalent streams from institute of repute (IITs, NITs, BITs,
IIITs or equivalent)
Strong object oriented design skills & knowledge of design patterns
Experience designing & developing distributed systems involving multiple web
services, databases (both SQL and NoSQL), caches, queues, etc. taking into
consideration scalability, availability, fault tolerance, consistency, etc. of the
overall system
Well-aware of and enforces development best practices: Unit Tests, Code Reviews,
Integration Tests, CI/CD, Monitoring, Alerting, etc.





