

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
Connect with the team
Similar jobs
Strong Senior Backend Engineer profiles
Mandatory (Experience 1) – Must have 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems
Mandatory (Experience 2) – Must have strong backend development experience using one or more frameworks (FastAPI / Django (Python), Spring (Java), Express (Node.js).
Mandatory (Experience 3) – Must have deep understanding of relevant libraries, tools, and best practices within the chosen backend framework
Mandatory (Experience 4) – Must have strong experience with databases, including SQL and NoSQL, along with efficient data modeling and performance optimization
Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs, services, and backend systems, including system design and clean code practices
Mandatory (Domain) – Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)
Mandatory (Company) – Must have worked in product companies / startups, preferably Series A to Series D
Mandatory (Education) – Candidates from top engineering institutes (IITs, BITS, or equivalent Tier-1 colleges) are preferred
Key Responsibilities
- Develop and maintain applications using Java 8/11/17, Spring Boot, and REST APIs.
- Design and implement microservices and backend components.
- Work with SQL/NoSQL databases, API integrations, and performance optimization.
- Collaborate with cross-functional teams and participate in code reviews.
- Deploy applications using CI/CD, Docker, Kubernetes, and cloud platforms (AWS/Azure/GCP).
Skills Required
- Strong in Core Java, OOPS, multithreading, collections.
- Hands-on with Spring Boot, Hibernate/JPA, Microservices.
- Experience with REST APIs, Git, and CI/CD pipelines.
- Knowledge of Docker/Kubernetes and cloud basics.
- Good understanding of database queries and performance tuning.
Nice to Have:
- Experience with messaging systems (Kafka/RabbitMQ).
- Basic frontend understanding (React/Angular).
-5+ years of experience working as a software engineer in a fast-paced environment.
-Well-versed with Golang or Javascript.
-Experience with AWS is a bonus
-You have analytical and problem-solving skills, and can communicate your ideas.
-Experience with WebRTC, iOS, Android, or C++ development is a bonus.
Responsibilities-
-Work closely with the founders and the team to plan, design, and build the next iterations.
-You will collaborate closely with other engineers on the team and lend your help in your areas of expertise.
-Build micro-services to support new functionality.
-Build best practices to improve the current API workflow
-Help design and develop the next iteration of our observability platform.
-Mentor and hire Junior Developers.
Nature of project – Product development.
Key skills: Java full stack developer with React Js experience.
Key Responsibilities
- Advance the state of the art in building Microservices with Java and frontend applications with React JS.
- Design and Develop Cloud based, web applications for SMBs
- Design and develop the front end for customer-facing applications using MVC framework
- Design and develop supporting components and Microservices for the backend tiers focusing on fault-tolerance and scalability in a multi-tenant B2B2C environment
- Team with top-notch engineers, product managers, Dev Ops and QA following agile development methodologies
- Review functional requirements, providing technical feedback on feasibility and architectural approach and framework.
- Develop technical specifications
- Contribute to test plan development.
- Create Prototype and/or Proof of Concepts (POCs) when necessary
- Act in a technical leadership capacity: Mentor junior engineers and new team members, perform code reviews and apply technical expertise to challenging programming and design problems
- Manage and maintain Cloud infrastructure
- Maintain and improve the functionality and performance of the existing web applications; refactor legacy codebase
- Help shape and execute the technical roadmap to develop next generation features; integrate corporate- and product-level architecture principles and goals into the teams project work through designs, implementation strategies, and project planning.
- Drive a culture of quality, technical curiosity, continuous improvement, and evidence-based data driven decision making in the organization.
- Lead team in software development best practices including Peer Code Review, Unit testing, Automated Deployments, and Automated Testing.
- Write technical documentation
Job Title - Cloud Fullstack Engineer
Experience Required - 5 Years
Location - Mumbai
Immediate joiners are preferred.
About the Job
As a Cloud Fullstack Engineer you will design, develop, and maintain end-to-end solutions for cloud-based applications. The Cloud Fullstack Engineer will be responsible for building both frontend and backend components, integrating them seamlessly, and ensuring they work efficiently within a cloud infrastructure.
What You’ll Be Doing
- Frontend Development
- Design and implement user-friendly and responsive web interfaces using modern frontend technologies (e.g., React, Angular, Vue.js).
- Ensure cross-browser compatibility and mobile responsiveness of web applications.
- Collaborate with UX/UI designers to translate design specifications into functional and visually appealing interfaces.
- Backend Development
- Develop scalable and high-performance backend services and APIs to support frontend functionalities.
- Design and manage cloud-based databases and data storage solutions.
- Implement authentication, authorization, and security best practices in backend services.
- Cloud Integration
- Build and deploy cloud-native applications using platforms such as AWS, Google Cloud Platform (GCP), or Azure.
- Leverage cloud services for computing, storage, and networking to enhance application performance and scalability.
- Implement and manage CI/CD pipelines for seamless deployment of applications and updates.
- End-to-End Solution Development
- Architect and develop fullstack applications that integrate frontend and backend components efficiently.
- Ensure data flow between frontend and backend is seamless and secure.
- Troubleshoot and resolve issues across the stack, from UI bugs to backend performance problems.
- Performance Optimization
- Monitor and optimize application performance, including frontend load times and backend response times.
- Implement caching strategies, load balancing, and other performance-enhancing techniques.
- Conduct performance testing and address bottlenecks and scalability issues.
- Security and Compliance
- Implement security best practices for both frontend and backend components to protect against vulnerabilities.
- Ensure compliance with relevant data protection regulations and industry standards.
- Conduct regular security assessments and audits to maintain application integrity.
- Collaboration and Communication
- Work closely with cross-functional teams, including product managers, designers, and other engineers, to deliver high-quality solutions.
- Participate in code reviews, technical discussions, and project planning sessions.
- Document code, processes, and architecture to facilitate knowledge sharing and maintainability.
- Continuous Improvement
- Stay updated with the latest trends and advancements in frontend and backend development, as well as cloud technologies.
- Contribute to the development of best practices and standards for fullstack development within the team.
- Participate in knowledge-sharing sessions and provide mentorship to junior engineers.
What We Need To See
- Strong experience in both frontend and backend development, as well as expertise in cloud technologies and services.
- Experience in fullstack development, with a strong focus on both frontend and backend technologies.
- Proven experience with cloud platforms (AWS, GCP, Azure) and cloud-native application development.
- Experience with modern frontend frameworks (e.g., React, Angular, Vue.js) and backend technologies (e.g., Node.js, Java, Python).
- Technical Expertise:
1. FrontEnd
- Handon Experience with HTML5, CSS, JavaScript, ReactJs, Next.js, redux, JQuery
2. Proficiency in Backend Development
- Strong experience with backend programming languages such as Node.js, Python
- Expertise in working with frameworks such as NestJS, Express.js, or Django.
3. Microservices Architecture
- Experience designing and implementing microservices architectures.
- Knowledge of service discovery, API gateways, and distributed tracing.
4. API Development
- Proficiency in designing, building, and maintaining RESTful and GraphQL APIs.
- Experience with API security, rate limiting, and authentication mechanisms (e.g., JWT, OAuth).
5. Database Management
- Strong knowledge of relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g. MongoDB).
- Experience in database schema design, optimization, and management.
6. Cloud Services
- Hands-on experience with cloud platforms such as Azure,AWS or Google Cloud.
- Security: Knowledge of security best practices and experience implementing secure coding practices.
- Soft Skills:
- Strong problem-solving skills and attention to detail.
- Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
- Ability to manage multiple priorities and work in a fast-paced, dynamic environment.
We are looking for a full stack Java Developer with an experience of 1+ years. The individual should have good technical knowledge of Core Java, Sql, Spring, Spring Batch, Spring Boot, Apache Spark. Exposure to sql databases like Oracle, Mysql, Microsoft Sql is a must. Any experience / knowledge / certification on Cloud technology preferrably Microsoft Azure is good to have. Exposures to non sql databases like Neo4j or Document database is again good to have.
The individual should have good knowledge of design patterns and also be able to implement them in desired conditions. Finally the individual should be smart and look to provide solutions for problems.
- Excellent Java programming skills.
- Experience in Web application Technologies like JAVA/JSP, HTML, Javascript, and CSS.
- Development experience using Java Spring Boot, Maven
- Knowledge and Experience in using REST API
- Experience in Database Query Languages.
- Experience in designing new application framework or migrating to new framework architecture, redesign, working on POC
- Should be open for understanding debugging the architecture of legacy systems and suggest changes wherever applicable.
- Experience in frameworks like Spring, Hibernate
- Experience in Multi-tier development/deployment of Web Application
- Experience in Producing and Consuming RESTful Web Services
- Strong in developing complex SQL Scripts to generate reports
- Familiarity in Maven, Gitx
- Familiarity in Unit Testing (JUnit)
- Familiarity with Continuous Integration tools (Jenkins etc)
Role- Software Development Engineer-2
As a Software Development Engineer at Amazon, you have industry-leading technical abilities and demonstrate breadth and depth of knowledge. You build software to deliver business impact, making smart technology choices. You work in a team and drive things forward.
Top Skills
You write high quality, maintainable, and robust code, often in Java or C++ or C#
You recognize and adopt best practices in software engineering: design, testing, version control, documentation, build, deployment, and operations.
You have experience building scalable software systems that are high-performance, highly-available, highly transactional, low latency and massively distributed.
Roles & Responsibilities
You solve problems at their root, stepping back to understand the broader context.
You develop pragmatic solutions and build flexible systems that balance engineering complexity and timely delivery, creating business impact.
You understand a broad range of data structures and algorithms and apply them to deliver high-performing applications.
You recognize and use design patterns to solve business problems.
You understand how operating systems work, perform and scale.
You continually align your work with Amazon’s business objectives and seek to deliver business value.
You collaborate to ensure that decisions are based on the merit of the proposal, not the proposer.
You proactively support knowledge-sharing and build good working relationships within the team and with others in Amazon.
You communicate clearly with your team and with other groups and listen effectively.
Skills & Experience
Bachelors or Masters in Computer Science or relevant technical field.
Experience in software development and full product life-cycle.
Excellent programming skills in any object-oriented programming languages - preferably Java, C/C++/C#, Perl, Python, or Ruby.
Strong knowledge of data structures, algorithms, and designing for performance, scalability, and availability.
Proficiency in SQL and data modeling.
2. Demonstrable abilities to optimize code. Strong analytical skills for effective problem solving
3. Experience in Java Spring, Hibernate, Github. Spring boot optional












