

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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Location : Bengaluru, India
Type : Full-time
Experience :4-7 Years
Mode :Hybrid
The Role
We're looking for a Full Stack Engineer who thrives on building high-performance applications at scale. You'll work across our entire stack—from optimizing PostgreSQL queries on 140M+ records to crafting intuitive React interfaces. This is a high-impact role where your code directly influences how sales teams discover and engage with prospects worldwide.
What You'll Do
- Build and optimize REST APIs using Django REST Framework handling millions of records
- Design and implement complex database queries, indexes, and caching strategies for PostgreSQL
- Develop responsive, high-performance front-end interfaces with Next.js and React
- Implement Redis caching layers and optimize query performance for sub-second response times
- Design and implement smart search/filter systems with complex logic
- Collaborate on data pipeline architecture for processing large datasets
- Write clean, testable code with comprehensive unit and integration tests
- Participate in code reviews, architecture discussions, and technical planning
Required Skills
- 4-7 years of professional experience in full stack development
- Strong proficiency in Python and Django/Django REST Framework
- Expert-level PostgreSQL knowledge: query optimization, indexing, EXPLAIN ANALYZE, partitioning
- Solid experience with Next.js, React, and modern JavaScript/TypeScript
- Experience with state management (Zustand, Redux, or similar)
- Working knowledge of Redis for caching and session management
- Familiarity with AWS services (RDS, EC2, S3, CloudFront)
- Understanding of RESTful API design principles and best practices
- Experience with Git, CI/CD pipelines, and agile development workflows
Nice to Have
- Experience with Elasticsearch for full-text search at scale
- Knowledge of data scraping, ETL pipelines, or data enrichment
- Experience with Celery for async task processing
- Familiarity with Tailwind CSS and modern UI/UX practices
- Previous work on B2B SaaS or data-intensive applications
- Understanding of security best practices and anti-scraping measures
Our Tech Stack
Backend
Python, Django REST Framework
Frontend
Next.js, React, Zustand, Tailwind CSS
Database
PostgreSQL 17, Redis
Infrastructure
AWS (RDS, EC2, S3, CloudFront), Docker
Tools
GitHub, pgBouncer
Why Join Us
- Work on a product processing 140M+ records—real scale, real challenges
- Direct impact on product direction and technical decisions
- Modern tech stack with room to experiment and innovate
- Collaborative team environment with a focus on growth
- Competitive compensation and flexible hybrid work model
✨ Develop & customize IBM Sterling OMS
✨ Build/consume REST APIs using Java & Spring Boot
✨ Work on OMS workflows, integration & order lifecycle
We’re hiring a Full Stack Developer with strong hands-on experience in Java, Spring Boot, and Angular to join our growing tech team.
🔧 What You'll Do
- Design and develop scalable full stack web applications
- Write clean, maintainable code using Java (Spring Boot) and Angular
- Collaborate with cross-functional teams to deliver high-quality features
- Optimize applications for performance and security
- Participate in code reviews and technical discussions
✅ What We’re Looking For
- 5+ years of professional experience in full stack development
- Strong expertise in Java, Spring Boot, and Angular
- Solid understanding of REST APIs, Microservices, and frontend integration
- Knowledge of databases and version control (Git)
- Excellent problem-solving and communication skills
- Immediate joiners are highly preferred
Dear,
We are excited to inform you about an exclusive opportunity at Xebia for a Senior Backend Engineer role.
📌 Job Details:
- Role: Senior Backend Engineer
- Shift: 1 PM – 10 PM
- Work Mode: Hybrid (3 days a week) across Xebia locations
- Notice Period: Immediate joiners or up to 30 days
🔹 Job Responsibilities:
✅ Design and develop scalable, reliable, and maintainable backend solutions
✅ Work on event-driven microservices architecture
✅ Implement REST APIs and optimize backend performance
✅ Collaborate with cross-functional teams to drive innovation
✅ Mentor junior and mid-level engineers
🔹 Required Skills:
✔ Backend Development: Scala (preferred), Java, Kotlin
✔ Cloud: AWS or GCP
✔ Databases: MySQL, NoSQL (Cassandra)
✔ DevOps & CI/CD: Jenkins, Terraform, Infrastructure as Code
✔ Messaging & Caching: Kafka, RabbitMQ, Elasticsearch
✔ Agile Methodologies: Scrum, Kanban
⚠ Please apply only if you have not applied recently or are not currently in the interview process for any open roles at Xebia.
Looking forward to your response! Also, feel free to refer anyone in your network who might be a good fit.
Best regards,
Vijay S
Assistant Manager - TAG
We are seeking extremely smart programmers who are gung ho about building large scale systems that are going to have a big impact on millions of customers.
Responsibilities:
- Design and develop products by working closely with business team.
- Gain experience with hands on coding and independent ownership of software components.
- Build performant, scalable, enterprise ready back end architectures that can support millions of users in parallel.
- Follow strong engineering best practices and champion their adoption.
Requirements:
- 2+ years’ experience in software product development and delivery.
- Bachelors or Masters degree in engineering from a reputed institute(preferably IITs, NITs, or other top engineering institutes).
- Strong grasp of CS fundamentals, algorithms and excellent problem solving abilities.
- All experience should be from good product development or e-commerce background.
- Must have shown good stability in all your previous associations.
- Have strong backend knowledge and cloud development exposure.
- Expert at Java, Spring boot, Hibernate, REST API development.
- Worked with at least 1 RDBMS (Mysql preferred). NoSql is a plus.
- Have used or are very hands-on with Microservices, Docker, Kubernetes, Gradle/Ant, Kafka, GIT/bitbucket in a very agile work place.
- Writing high quality code which is made better by unit tests and integration tests is how you work.
- Comfortable with exploring proven open source tech stack like Grafana, Kibana, Jira, Prometheus, caches like Redis/Memcached, task queues like celery, to name a few.
- Knowledge of test driven development and AWS tech stack will be a good plus.
JOB DESCRIPTION
Senior Software Engineer
It is a fish and seafood supply chain platform.It is a B2B marketplace leveraging technology to deliver the fastest harvest-to-retail in the industry.Building the future of meat and seafood supply chain.We are building smart supply chain to deliver the highest quality seafood and meat for the Indian consumer. Our innovations in process management and workforce orchestration along with strong industry credentials are enabling us to deliver the fastest harvest-to-fork in the industry.Our endeavor is to leverage experience across various parts of the value chain – farming, production, delivery to marquee brands – to deliver similar value to the Indian consumers.
Role
As a senior software engineer, you will contribute to our end to end supply chain platform. You'll work with all key stakeholders to deliver scalable, maintainable backend code and work with frontend developers to deliver amazing user experiences. We are building a design and process-centric culture where you'll play a key role in the implementation of the foundation of all our systems. Up for a challenge?
You are:
- A self-starter with a sense of what it takes to be successful as a team
- Agile - welcome change, do as less as possible and embrace continuous delivery
- Conscious about how quality is carried through from the UI to all layers underneath
- Opinionated, but flexible to accommodate the big picture
Responsibilities
- Analyse requirements, provide estimates and deliver code in an agile setup
- Stay on top of all owned work and raise red flags as early as possible
- Define the architecture, best practices and coding standards
- Support continuous technical improvement by investigating alternatives and technologies and present them for architectural review
- Motivate team members, coach junior members and extend goodwill to other employees
Must have
- Prior startup experience, preferably with war stories to share
- 4-6 years of software industry experience
- Solid understanding of software design, development, testing, and problem-solving
- Expertise in coding efficient, high quality and modularized software
- Expertise in JavaScript, node.js based backend development
- Expertise in common design patterns and anti-patterns in Javascript
- Experience in building and scaling service-oriented architecture and microservices
- Expertise in relational and non-relational databases and expertise in at least one database system
- Experience with planning, execution and maintenance of test infrastructure for backend workflows
- Experience with CI/CD and setting up a monitoring infrastructure
- Knowledge of AWS, specifically building scalable cloud-native architectures using services like Lambda, AWS Gateway, Aurora, etc
- Knowledge of Unix shell and source control systems and tools such as git
- Strong technical leadership skills
- Strong communication skills
- Technical mentoring skills
Great to have
- Experience with GraphQL, meteor.js and other modern JS ecosystems
- Experience with blockchain and interest in ML
- Experience working on high traffic systems
- Bachelor’s degree in Computer Science or a related discipline.
Skills And Qualifications
- Expert in Python, with knowledge of at least one Python web framework (such as Django, Flask, etc depending on your technology stack)
- Familiarity with some ORM (Object Relational Mapper) libraries
- Able to integrate multiple data sources and databases into one system
- Understanding of the threading limitations of Python, and multi-process architecture
- Good understanding of server-side templating languages (such as Jinja 2, Mako, etc depending on your technology stack)
- Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3
- Understanding of accessibility and security compliance (depending on the specific project)
- Knowledge of user authentication and authorization between multiple systems, servers, and environments
- Understanding of fundamental design principles behind a scalable application
- Familiarity with event-driven programming in Python
- Understanding of the differences between multiple delivery platforms, such as mobile vs desktop, and optimizing output to match the specific platform
- Able to create database schemas that represent and support business processes
- Strong unit test and debugging skills
- Proficient understanding of code versioning tools (such as Git, Mercurial or SVN)
- (Make sure to mention other frameworks, libraries, or any other technology related to your development stack)
- (List education level or certification you require)
• Should have a B.Tech / M.Tech / MCA in CS / IT / IS from premier college with 6+
years of experience in software development.
• Strong OOPS and OOD Fundamentals.
• E-commerce domain experience of 2-3 Years is mandatory.
• Good Coding, Problem Solving Skills, algorithms and data structures.
• Knowledge of My SQL database or any other RDBMS with a good understanding of
SQL language.
• Prior experience in web technologies is a plus.
• Ability to work on UNIX / Linux platform.
• Good Communication & Interpersonal Skills.
Job Description :
• You will be involved in all phases of development : architecture & design,
prototyping, implementation & testing, analysis & documentation, deployment.
• Capable of independent full systems design, including requirements gathering,
specifications, and coding.
• Knowledge in performance, scalability, enterprise system architecture, and
engineering best practices.
• Take the product/feature idea from the conceptualization phase to delivery with all
the relevant high-quality artifacts during the cycle.
• Flexibility and collaboration, coupled with strong object-oriented design & software
development skills are keys to success in this position.
Skills required are Java, microservice,Spring boot, and knowledge of AWS.
Location; Pune.












