
- Must be from good companies and have been working on high Scale of Traffic.
- Proficiency in engineering practices and writing high quality code, with expertise Go Langauge
- Experience building microservices.
- Strong knowledge of data structures, algorithms, and designing for performance
- Good knowledge of cloud technologies like AWS/Google Cloud/Azure Proficient with RDBMS

About Datamatics Global Services Limited
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JUUUNO is a leading technology innovator seeking a highly skilled Senior Backend Developer to join our dynamic engineering team. We are committed to building scalable, high-performance applications that push the boundaries of technological innovation.
Job Title
Senior Backend Developer
Bangalore
Job Type
Full-Time | Regular Employment
Experience Requirements
- Minimum 4-5 years of professional experience in backend development
- Proven track record of designing and implementing scalable application architectures
- Demonstrated expertise in building and maintaining complex backend systems
- Extensive experience in app development across multiple domains
Technical Requirements
Programming Languages (Required)
- Proficiency in at least two of the following languages:
- Python (Django/Flask)
- Java (Spring Boot)
- JavaScript/Node.js
- Kotlin
- Go (Golang)
Database Technologies
- Advanced knowledge of both SQL and NoSQL databases
- Experience with:
- PostgreSQL
- MySQL
- MongoDB
- Redis
- Ability to design efficient database schemas and optimize complex queries
Cloud and DevOps
- Extensive experience with cloud platforms:
- Amazon Web Services (AWS)
- Google Cloud Platform
- Microsoft Azure
- Containerization expertise:
- Docker
- Kubernetes
- CI/CD pipeline implementation
- Infrastructure as Code (Terraform, CloudFormation)
API and Microservices
- Expert-level API design and implementation
- RESTful and GraphQL API development
- Microservices architecture
- API documentation and management tools (Swagger, OpenAPI)
Security and Performance
- Strong understanding of:
- Authentication protocols (OAuth, JWT)
- Encryption techniques
- Web security best practices
- Performance optimization
- Scalability design patterns
Responsibilities
- Design and develop robust, scalable backend services for complex applications
- Architect high-performance system solutions
- Implement and maintain microservices architectures
- Ensure application security and data protection
- Optimize database performance and query efficiency
- Collaborate with cross-functional teams including frontend developers, product managers, and DevOps engineers
- Conduct code reviews and mentor junior developers
- Implement and maintain CI/CD pipelines
- Troubleshoot and resolve complex technical challenges
Preferred Qualifications
- Bachelor's or Master's degree in Computer Science, Software Engineering, or related field
- Experience in startup or fast-paced technology environments
- Contributions to open-source projects
- Knowledge of machine learning integration in backend systems
- Experience with message queue systems (RabbitMQ, Apache Kafka)
Soft Skills
- Strong problem-solving abilities
- Excellent communication skills
- Ability to work in an agile, collaborative environment
- Passion for continuous learning and technology innovation
- Detail-oriented with strong analytical thinking


Backed by Y Combinator & other leading institutional investors, we help people prevent, manage and reverse Type 2 Diabetes. Co-founded by Rohan Verma(ex- McKinsey) & Aditya Kaicker(ex-Accenture) who are 2nd time founders in the healthcare space.
Breathe Well-being is a clinically verified digital well-being game that helps people with Type 2 Diabetes to reduce blood glucose and lose weight in a fun and engaging way. Our
Net Promoter Score is 76 and more than 40% of our current customers are coming from
word of mouth! Over the next 5 years, we are on a mission to help 10M Indians reverse and manage Type 2 Diabetes while building a trusted and loved community for people with chronic conditions.
Our Team:
We are a diverse group of 18 people (doctors, engineers, designers, fitness coaches and
dieticians) who have been fortunate to study at leading colleges like UCLA, NTU, BITS Pilani and have extensively worked at great companies like McKinsey & Company, Accenture & Nomura.
About the Role :
We are looking for a PHP Developer responsible for managing back-end services and the
interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.
In this role, you will:
• Integrate user-facing elements developed by front-end developers.
• Build efficient, testable, and reusable PHP modules.
• Solve complex performance problems and architectural challenges.
• Integrate data storage solutions.
You may be a fit if you have:
• 2 – 4 years of experience in building PHP web frameworks such as Lavarel.
• Understand the fully synchronous behavior of PHP.
• Understanding of MVC design patterns
• A proficient understanding building rich UI & front-end technologies, such as JavaScript,
HTML5, and CSS3.
• Working knowledge of object-oriented PHP programming
• Understanding of accessibility and security compliance.
• Strong knowledge of the common PHP or web server exploits and their solutions.
• Experience in using fundamental design principles for a scalable application.
• Knowledge of user authentication and authorization between multiple systems, servers, and environments.
• Knowledge of Integrating multiple data sources and databases into one system.
• Familiarity with limitations of PHP as a platform and its workarounds.
• Understanding of creating database schemas that represent and support business processes.
• Familiarity with SQL/NoSQL, Postgresql databases and their declarative query languages


Desired Experience
3+ years
Job Description
What You’ll Do
- Design financial systems for scale. Measure, plan, iterate.
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Setup and own the engineering architectures built around event sourcing, application sharding, database sharding, service communication mesh, etc.
- The tech: Go, Google Cloud Spanner, Kafka, Redis
What you bring to the table
- 3+ years of experience. Relevant experience is preferred.
- Knowledge of 2 common programming languages - Python & Go / Java & Node / Rust
- Comfortable in linux command line, AWS or GCP
- Strong unit test and debugging skills
- Great communication skills
Bonus if you have…
- Love building great products and engineering systems from scratch
- Are a Self-starter, Hustler and Curious to Learn
- Have an understanding of fundamental design principles behind a scalable application
- Thrive in an early-stage startup environment with less stability and more ambiguity
- Have an interest in financial products and/or cryptocurrency


The Role:
We are looking for an enthusiastic Senior Python Developer, who adopts a hands-on approach and loves to build scalable, distributed and large web / mobile products. You would be responsible for designing the architecture, reviewing the code, building the technology and deploying web/mobile applications.
Responsibilities:
- Own the product development from scratch.
- Design and implementation of low-latency, high-availability, and performant applications.
- Contribute to discussion on software architecture while mentoring a team of developers.
- Participate in code reviews, design reviews, SCRUM ceremonies, and troubleshoot to ensure uptime for live systems etc.
Requirements:
- Bachelor's degree in a technology-related field from a premier college.
- Prior 3+ years of experience in back-end development (Python/ Golang) in a start-up or a dynamic work environment.
- Good exposure in writing and optimizing SQL for high-performance systems.
- Understanding of asyncio and eventloop/ uvloop concepts. Knowledge of frameworks such as Quart/ Fastapi/ Starlette is preferred.
- Knowledge of AWS; Caching technologies like Redis, Memcache; ELK; mySQL Databases, etc.
- Strong understanding of System Design, Microservice Architecture, Kafka, Pub/Sub, Message queues, and in-memory data stores etc.
- Customer oriented, responsive to changes, and able to multi-task in a fast-paced environment.



1. Work experience between 3 years to 9 years in building large scale high user traffic consumer facing applications with desire to work in a fast paced startup.
2. Knowledge on reactive and asynchronous programming is preferable. If you have worked with coroutines, goroutines, high concurrency or optimized number of threads for processing on your backend server you could be a good fit.
3. Extremely proficient at writing performant, scalable and production ready code in Kotlin, Java (8 or above, comfortable with concepts like lambda, streams, multithreading etc), Elixir, Rust, or Golang. Should be familiar with static code analysis, code coverage and code reviews.
4. Experience with NoSQL DBs like MongoDB, Cassandra, Redis or Aerospike is required. Knowledge of graph DBs like Neo4j is preferred.
5. Strong in algorithms, problem solving and data structures.
6. Knowledge of TDD and experience with building applications integrated with CI-CD pipelines (automated build, tests and deployments).
7. Exposure to micro-services with good understanding of containers, kubernetes, logging, alerting and monitoring. Inter services communication. Should know how to handle multiple versions of APIs.

Architects are responsible for driving Technology & Best Practices in Engineering. We are a rapidly growing & constantly improving organisation. We seek very high levels of ownership in all individuals, especially leadership roles like this - Ownership of your team, your product. Going beyond your role & contributing to make the organisation & business better is an expectation.
Responsibilities:
- Actively participate in development along with team members for as much as 50% of their time, creating modules & systems that can then be treated as a working reflection of the best practices.
- Participating in code reviews, design reviews, architecture discussions.
- Being responsible for Scaling, Performance & Quality for the team
- Setting up best practices to help the team achieve the above and constantly thinking about improving the technology use are your responsibilities.
- Driving the adoption of these best practices around coding, design, quality, performance in your team and influence them for the entire organisation are also expectations from you.
- Experiment with new & relevant technologies and tools, and drive adoption while measuring yourself on the impact you are able to create
- Collaborate with Product Management and Product Development leaders in developing product visions and strategies.
- Define & drive implementation of long term technology vision for your product & team
- You will be the primary owner of the architecture of your product and will also be responsible for getting it reviewed, and making sure the system is built accordingly.
- Be an evangelist for technology & represent in external forums.
- Creating architectures & designs for new solutions around existing and new problem spaces
- Drive technology & tool choices for your team & be responsible for them.
Requirements:
- Quick & Excellent Problem solving skills for complex & large scale problems
- Exposure to a wide variety of problem spaces, technologies
- Very Strong System design and OO skills with a nifty ability to craft clean interfaces and operate at the right levels of abstraction
- Solid coding skills with ability to drive teams through massive refactoring exercise & improve coding standards across large code bases
- Deep knowledge, understanding & experience of working with a large variety of multi-tier architectures.
- Awareness of pitfalls & use cases for a large variety of solutions
- Deep understanding & experience of high performance web scale & real-time response systems with experience & expertise in a variety of large scale persistent systems including large databases
- Exposure to complete product development cycles - From inception to production to scaling up, supporting new requirements, re-architectures the Principle architects should have seen it all and ideally in multiple cycles.
- Should have been part of scalable product development cycles with either large data handling or large transaction processing exposure for 5 years
- Must have worked in a small setup (either a startup or a small & reasonably independent team)
- 8+ years of overall experience
- B Tech or higher in Computer Science or equivalent required


Our client develops, publishes and distributes highly engaging games to a wide audience covering mobile, social and online platforms. Their group of architects are always attempting new and radical stuff that enhances the creative programming and gaming stages, keeping the players constantly glued and wanting for more.
Funded by SnapDeal founders, it is a cross platform gaming organisation focused on real money gaming and strategy games. The founder is an INSEAD and IIT-B alumni with more than 10 years of work experience across various countries.
- Handling the server side programming of the multiplayer gaming application
- Writing scalable, robust,, testable, efficient, and easily maintainable code
- Translating software requirements into stable, working, high performance software
- Translating design mockups and prototypes into working applications.
- Building customer facing technology products, Developing Highly Scalable Code and Working Closely with Engineering and Product Team.
- Building social, web and mobile based games for users across India
What you need to have:
- Candidates with experience in Go / Python / Erlang will be preferred
- Working experience in a Product StartUp (Internet / E-commerce) building scalable applications.
- Hands on experience in system architecture and gaming apps
- Good spoken and written communication skills.
- Good team player.
- Sharp analytical abilities with proven design skills
- Able to think critically of the current system in terms of software development


Key Responsibilities:
- Lead a full product development lifecycle from ideation, design, development, to roll out and support
- Own the delivery of multiple features of the product end to end while hands-on in development as well
- Advocate best development practices such as continuous integration/continuous delivery, automation (testing and infrastructure)
Role and Qualifications:
- 7+ Years’ of experience, managing teams of 5+ people
- Must have excellent programming, debugging and scripting skills with a solid understanding of Object Oriented Design principles.
- Proficiency in at least two of the following: Java, NodeJS, Go, JavaScript, Python programming stacks, and passion for software engineering and craftsman-like coding prowess
- Knowledge of software practices like refactoring, clean code, domain driven design, Encapsulation etc
- Hands on experience managing databases like MongoDB, Cassandra, Redis.
- Exposure to event driven systems and event streaming engines like Kafka
- Good knowledge of DevOps tooling like docker, kubernetes, ansible/chef, AWS.



