

About Fission Labs
About
Fission Labs is a Software Product Development & Services company delivering high-end solutions primarily in the areas of highly scalable cloud applications and analytics for large sets of data. Few of the challenges we are working on are scaling an application to support 150 million users, real-time bidding with response time requirements of 100 ms or less. If you are somebody who wants to work on big challenges and change the world, we have those opportunities in spades
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Similar jobs (10)
Job Title : Python Django Developer
Experience : 3+ Years
Location : Gurgaon (Work from Office)
Job Summary :
We are looking for an experienced Python Django Developer with strong expertise in building scalable web applications and distributed systems. The ideal candidate must have hands-on experience with Django, Redis, Celery, RabbitMQ, PostgreSQL, and Kafka to design and optimize high-performance applications.
Mandatory Skills :
Python, Django, Redis, Celery, RabbitMQ, PostgreSQL, Kafka
Key Responsibilities :
- Design, develop, and maintain web applications using Python & Django.
- Implement asynchronous tasks and background job processing using Celery with RabbitMQ/Redis.
- Work with PostgreSQL for database design, optimization, and complex queries.
- Integrate and optimize messaging/streaming systems using Kafka.
- Write clean, scalable, and efficient code following best practices.
- Troubleshoot, debug, and optimize application performance.
- Collaborate with cross-functional teams (frontend, DevOps, QA) for end-to-end delivery.
- Stay updated with the latest backend development trends and technologies.
Requirements :
- Minimum 3+ years of experience in backend development using Python & Django.
- Hands-on experience with Redis, Celery, RabbitMQ, Kafka, and PostgreSQL.
- Strong understanding of REST APIs, microservices architecture, and asynchronous task management.
- Knowledge of performance tuning, caching strategies, and scalable system design.
- Familiarity with Git, CI/CD pipelines, and cloud deployment (AWS/GCP/Azure) is a plus.
- Excellent problem-solving and communication skills.
Screening Round: Focuses on System Design.
Client Rounds: 4 subsequent rounds (Technical, Cultural, and Leadership) following a successful screening report and client shortlisting.
Tech Stack: Java, Spring Boot, React, Hibernate, MySQL/MongoDB/ScyllaDB.
Innovation: Leveraging AI tools (Claude, Cursor, LLMs/RAG) to accelerate development.
Experience and JD:
Responsibilities
● Build and maintain end-to-end features spanning React.js frontends and Java
(Spring Boot) microservices and database integrations .
● Develop responsive, performant, and accessible UIs integrated with REST
and GraphQL APIs.
● Design and scale low-latency, high-throughput microservices for real-time
data workflows.
● Implement event-driven systems using Kafka or SQS for asynchronous
communication.
● Collaborate closely with Product, Design, and Architecture teams to translate
business requirements into scalable technical solutions.
● Optimize application performance via caching strategies, async processing,
and database tuning.
● Implement and maintain CI/CD pipelines, test automation, and monitoring
frameworks.
● Leverage AI-assisted tools (Claude, Cursor, etc.) to boost velocity and maintain
code quality.
● Participate in code reviews, design discussions, and architecture decisions.
● Write clean, maintainable code, follow design patterns, maintain high test
coverage, and document key technical decisions.
Requirements
● 6–10 years of full stack development experience with a proven track record in
production systems.
● Strong proficiency in React.js, JavaScript/TypeScript, Redux (or similar state
management) and modern frontend frameworks.
● Solid backend experience with Java, Spring Boot, and Hibernate.
● Database experience with MySQL, MongoDB, or ScyllaDB.
● Hands-on with microservices, AWS (ECS/Lambda), SQS, and GraphQL.
● Familiarity with event-driven architectures and caching layers (Redis) and
asynchronous processing.
● Working knowledge of observability tools (Prometheus, Grafana, CloudWatch,
Sentry).
● Understanding of data structures, algorithms, and system design
fundamentals.
● Passion for clean code, testability, and engineering excellence.
● Strong analytical and communication skills with the ability to collaborate across
Product, Design, and QA teams.
● Comfortable in a remote-first, asynchronous, and ownership-driven culture.
Nice to Have
● Experience with React Native or mobile web frameworks.
● Exposure to Kafka, Kinesis, or other event-streaming platforms.
● Familiarity with CI/CD (GitHub Actions, Docker) and container orchestration (ECS).
● Experience with AI-assisted development, LLMs, or LangChain pipelines.
● Domain exposure to B2B platforms, travel-tech, or high-scale marketplaces.
● Background in Test-Driven Development (TDD) or Agile methodologies.
Profile: AWS Data Engineer
Mode- Hybrid
Experience- 5+7 years
Locations - Bengaluru, Pune, Chennai, Mumbai, Gurugram
Roles and Responsibilities
- Design and maintain ETL pipelines using AWS Glue and Python/PySpark
- Optimize SQL queries for Redshift and Athena
- Develop Lambda functions for serverless data processing
- Configure AWS DMS for database migration and replication
- Implement infrastructure as code with CloudFormation
- Build optimized data models for performance
- Manage RDS databases and AWS service integrations
- Troubleshoot and improve data processing efficiency
- Gather requirements from business stakeholders
- Implement data quality checks and validation
- Document data pipelines and architecture
- Monitor workflows and implement alerting
- Keep current with AWS services and best practices
Required Technical Expertise:
- Python/PySpark for data processing
- AWS Glue for ETL operations
- Redshift and Athena for data querying
- AWS Lambda and serverless architecture
- AWS DMS and RDS management
- CloudFormation for infrastructure
- SQL optimization and performance tuning
Job Description
Key Responsibilities:
- Design, develop, test, and deploy high-quality backend solutions using Java and Spring Boot.
- Build and maintain scalable microservices that interact with various data sources and front-end applications.
- Develop RESTful APIs for internal and external consumption.
- Write clean, maintainable, and efficient code following best practices and coding standards.
- Collaborate with cross-functional teams including front-end developers, QA, and DevOps.
- Troubleshoot and resolve technical issues across environments.
- Participate in code reviews, unit testing, and integration testing.
- Ensure application performance, uptime, and scale by identifying and resolving bottlenecks.
Required Skills & Qualifications:
- Strong proficiency in Java (8 or higher).
- Hands-on experience with Spring Boot framework.
- Experience in developing RESTful APIs and understanding of HTTP protocols.
- Solid understanding of Microservices architecture and related patterns (e.g., service discovery, circuit breaker).
- Familiarity with relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
- Understanding of containerization tools (e.g., Docker) and orchestration tools (e.g., Kubernetes) is a plus.
- Knowledge of CI/CD pipelines and version control tools like Git.
- Excellent problem-solving skills and attention to detail.
- Good communication and teamwork skills.
Preferred Qualifications:
- Experience with cloud platforms such as AWS, Azure, or GCP.
- Familiarity with message brokers like Kafka or RabbitMQ.
- Exposure to Agile/Scrum development methodologies.
We are looking for a qualified team leader to manage our team and provide effective guidance. The lead should be an excellent coder with proficiency and a clear understanding of different aspects of a project. You will be responsible for
supervising, managing, and motivating team members regularly. As a team leader, you will be the contact point for all Interactions with the architect and the team, so You must possess excellent communication skills. You should also be able to act proactively to ensure smooth team operations and effective collaboration.
Who are we looking for?
• Bachelors / Masters in Computer Science or equivalent with at least 7-10 years of professional experience.
●Strong software design and architectural skills in object-oriented and functional programming styles.
• Java 8, Microservices using Spring boot, Spring Cloud, Docker, Kubernetes orchestrator.
• Experience in working with Spring Framework - Spring Boot, Spring REST, Spring Security, Spring Data JPA, OAuth2, hibernate.
• Experience in Reactjs or Angular.
• Experience in RabbitMQ
• Experience in Unit Testing Tools like Junit/TestNG
• Experience in working with SQL & NoSQL databases such as MySQL, Mongo DB.
• Knowledge of CI/CD architecture.
• Knowledge of tools like Jenkins, SonarQube, Maven, Gitlab
• Experience in cloud technologies.
• Team management using Scrum methodologies.
You demonstrate the ability to work in a fast-paced and hyper-growth environment where the requirements are
constantly changing.
• Solid understanding of design patterns, data structures, and advanced programming techniques.
● Must have experience leading a team of at least 8- 10 people.
• Nice to have Python 3.6+, Image and textual data processing technologies.
Roles and Responsibilities:
· Design and implement scalable web applications and platforms using technologies such as Typescript, NestJS, Angular, NodeJS, ExpressJS, TypeORM, and Postgres
· Good understanding of web and REST API design patterns
· Experience with AWS technologies such as EKS, ECS, ECR, Fargate, EC2, Lambda, ALB will be an added advantage
· Hands-on experience with unit test frameworks like Jest
· Good working knowledge of JIRA, Confluence, Git
· Basic knowledge of Kubernetes and Terraform for infrastructure as code
· Basic knowledge of Docker compose and Docker
· Strong understanding of microservices architecture and ability to implement components independently
· Proven track record of problem-solving skills
· Excellent communication skills
Our client is a call management solutions company, which helps small to mid-sized businesses use its virtual call center to manage customer calls and queries. It is an AI and cloud-based call operating facility that is affordable as well as feature-optimized. The advanced features offered like call recording, IVR, toll-free numbers, call tracking, etc are based on automation and enhances the call handling quality and process, for each client as per their requirements. They service over 6,000 business clients including large accounts like Flipkart and Uber.
- Selecting appropriate Cloud services to design and deploy an application based on given requirements
- Migrating complex, multi-tier applications on Cloud Platforms
- Designing and deploying enterprise-wide scalable operations on Cloud Platforms
- Implementing cost-control strategies
- Developing and maintain the CI/ CD pipeline for the assigned projects
- Conducting code reviews, and make technical contributions to product architecture
- Getting involved in solving bugs and delivering small features
- Fostering technical decision making on the team, but taking final decisions when necessary
- Understanding engineering metrics and seeking to improve them
- Understanding the requirements from the Product team, plan and execute.
What you need to have:
- Expert in designing Software and System architecture.
- Must have knowledge of Python (PHP knowledge is a plus) and related tools.
- Must understand MySQL queries and optimization.
- Must be able to build high performance teams.
- Must have worked with similar technologies: redis, docker, AWS, elasticsearch.
- Must know about microservice architectures and CI/ CD pipelines.
- Must be great at planning, researching and communicating.
- Must have a good understanding of application metrics.
Primary duties and responsibilities include:
· Candidate should be able to work independently with client and should possess excellent written and verbal communication skills.
· Work closely with experienced integration, frontend, or backend development teams
· Contribute to estimation and scoping of projects
· Work on presales environment for checking feasibilities for customer requirement.
Required Experience
· Bachelor’s degree in Computer Science, or equivalent work experience
· 8 to 10 years of programming experience—preferably with Java 8+, and other tool support
· 5 years of Java # 6 experience
· Should have experience in executing project independently.
· Demonstrated ability of Design Patterns and to write efficient, reusable rest services and libraries
· Experience with agile software development methodologies and software development best practices, pair programming and CI/CD
· Excellent written and verbal communication skills
· Excellent analytical skills for solution building of customer requirements.
· Good knowledge of datastores (RDBMS, Oracle, SQL)
· Must have in depth understanding of the L1, L2, L3 support environment.
· Experience in Java, JavaScript, CSS, HTML, XML and other web technologies
· Strong understanding of network OS and system configurations.
· Familiarization with OSLC and REST APIs
· Ability to successfully lead offshore development teams and work in global delivery model- US, India, Germany
· Knowledge of LDAP
· Experience with Microsoft Office products- Word, Excel, Powerpoint
· Experience with other Requirements Management Tools (Polarion, PTC Integrity) will be a value add
Preferred Experience
· Understanding of high-availability, fault-tolerant, scalable, distributed systems
· Working knowledge of iText 7, OpenFeign, RabbitMQ/JMS, Mockito and jUnit/nUnit, Spring Cloud
Salary is not constriant. Candidate should have interest to new things.
Role Description:
As a Lead Backend Engineer , you will be responsible for designing and deploying scalable, highly available, and fault-tolerant systems for Radiusagent. Experience as a Tech Lead, managing tasks with back-end engineers while coding themselves will be a bonus point for the ideal candidate.
Responsibilities will include-
- You will contribute to all aspects of an agile software development lifecycle including design, architecture, development, documentation, testing, and operations.
- You will build cutting-edge scalable systems by writing simple and efficient code.
- You will push your design and architecture limits for new product development.
- You will ensure compliance with the build/release and configuration management process.
Skills needed:
- be able to design and build modules from ground up
- proficient in any one programming language out of php/golang/node/python/javascript/java/ruby and ability to pick up others
- experience with mysql/postgres/mongodb/couchdb
- experience with redis/memcached
- experience with rabbitmq / kafka
- experience in having written cron jobs, troubleshooting downtime
- ability to work with ambiguous requirements
- good understanding of OS concepts
Nice to haves:
- experience with managing VMs' on aws/gcp/digitalocean
- experience with docker/kubernetes
- experience elasticsearch or lucene











