

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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Responsibilities:
- Develop and maintain high-quality, efficient, and scalable backend applications.
- Participate in all phases of the software development lifecycle (SDLC)
- Write clean, well-documented, and testable code adhering to best practices.
- Collaborate with team members to ensure the successful delivery of projects.
- Debug and troubleshoot complex technical problems.
- Identify and implement performance optimizations.
- Participate in code reviews
- Hands-on experience with Springboot, Java 8 and above.
- 5-7 years of experience developing Java applications.
- Knowledge about at least one messaging system like Kafka, RabbitMQ etc.
- Required React developer requirements, qualifications & skills:
- Proficiency in React.js and its core principles
- Strong JavaScript, HTML5, and CSS3 skills
- Experience with popular React.js workflows (such as Redux)
- Strong understanding of object-oriented programming (OOP) principles.
- Experience with design patterns and best practices for Java development.
- Proficient in unit testing frameworks (e.g., JUnit).
- Experience with build automation tools (e.g., Maven, Gradle).
- Experience with version control systems (e.g., Git).
- Experience with one of these databases – Postgres, MongoDb, Cassandra
- Knowledge on Retail or OMS is a plus.
- Experienced in containerized deployments using Docker, Kubernetes and DevOps mindset
- Ability to reverse engineer existing/legacy and document findings on confluence.
- Create automated tests for unit, integration, regression, performance, and functional testing, to meet established expectations and acceptance criteria.
Job Title: Java Spring Boot Engineer
📍 Location: Bangalore
🧾 Experience: 3–4 Years
📝 Employment Type: Contract (1 Year + Extendable)
Required Skills & Qualifications:
- Strong expertise in Java, Spring Boot, and backend development.
- Hands-on experience with PHP.
- Good understanding of data structures and algorithms.
- Experience with GraphQL and RESTful APIs.
- Proficiency in working with SQL & NoSQL databases.
- Experience using Git for version control.
- Familiarity with CI/CD pipelines, Docker, Kubernetes, and cloud platforms (AWS, Azure).
- Exposure to monitoring and logging tools like Grafana, New Relic, and Splunk.
- Strong problem-solving skills and ability to work in a collaborative team environment.
- 6+ years of experience in Java backend development with expertise in Spring/Spring Boot and RESTful services.
- Solid grasp of Object-Oriented Programming (OOP), system design, and design patterns.
- Proven experience leading a team of engineers or taking ownership of modules/projects.
- Experience with AWS Cloud services (EC2, Lambda, S3, etc.) is a strong advantage.
- Familiarity with Agile/Scrum methodologies and working in cross-functional teams.
- Excellent problem-solving, debugging, and analytical skills.
- Strong communication and leadership skills.
Job Responsibilities:
- Collaborate with other senior engineers, and management, to achieve optimal application architecture and design
- Develop efficient, secure applications, peer-review code, and document solutions within an agile-blended software environment
- Communicate proactively with team members, infrastructure, security, and quality assurance to continuously improve processes and engineering excellence
- Guide and train other developers in backend technology
- Ability to work independently and as a member of a team spread over different time zones
Skills:
- Understanding of object oriented programming skills and data structures
- At least 6 years of hands-on development in Java, Springboot & Hibernate
- Should have experience in Java Multithreading, microservices
- Experience with developing web applications
- Expertise with in Core Java (Collections, Exception handling)
- Experience with J2ee( Servlets, JSPs)
- Experience with all well known database technology and object-relational mapping, experience with databases (Mysql, Mssql)
- Knowledge and development background in web-services/REST, AJAX, JSON, and XML
- Experience with Windows and Linux based environments
- Experience with Maven and GIT tools
- Understanding of UI technologies (HTML, CSS, Javascript libraries) would be a plus
- Good to have – AWS experience and Fintech domain experience
- Awareness of Jenkins will be a value add
Why Deliveroo?
When you first think about Deliveroo, you probably think of getting great food to your house in less than half an hour. Awesome right? But behind the scenes is the real story. This story is one of high growth, huge challenges and an enormous opportunity ahead of us. It began with our founder Will, arriving in London in 2004 and finding it almost impossible to order great food, despite the wealth of incredible restaurants in the city. In 2013 Deliveroo was launched. Fast forward to 2020 and we operate in 12 markets with over 60,000 riders who deliver orders from 60,000 restaurants in over 500 cities worldwide.
We want to be the definitive food company - the app you go to any time you have a hunger pang. We are transforming the way people think about food. We are providing people with limitless access to different cuisines and restaurants, turning cooking from a chore to a choice, and giving people the freedom to eat what they want, when they want, where they want it.
We work with riders, restaurants and consumers. We operate one of the most complex three sided marketplaces in the world and we do this in real time. Millions of customers and thousands of restaurants and riders rely on us to match them within milliseconds. The algorithms behind that marketplace are the secret sauce that allows us to deliver our orders in around 30 minutes.
And we're just getting started.
The scale of the opportunity ahead of us is immense. The global food market is valued at £7.7 trillion but only 1% of it is currently online. Contrast that with the digital disruption of countless other industries - from banking and travel to retail and communications - it's clear that our journey in the food sector has only just begun.
We are already a multi-billion pound company that has grown rapidly. Deliveroo came top in the FT's' list of Europe's fastest growing 1000 companies in 2018, and we were the first company ever to win Deloitte's 'UK Top 50' two years in a row. Yet most of the extraordinary value this company will generate lies ahead of us.
The Role
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Work as part of a full stack product team to develop solutions to ensure optimal experiences for our customers, riders, and restaurants
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Utilise a variety of backend technologies to build scalable products
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You'll take part in decisions related to how we undertake new projects
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You'll gather requirements and scope out projects with the rest of the team
Our skills include:
We want to emphasise that we don’t expect you to meet all of the below but would love you to have experience in some of these areas.
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Pride in readable, well-designed, well-tested software
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5 to 10 years professional experience writing web-based applications in any language, and a willingness to quickly get up to speed on our stack (Ruby/Rails, Go, Python, Scala, or Rust)
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Experience with TDD environments (RSpec, Minitest, Capybara, Selenium)
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Experience with relational databases (PostGreSQL, MySQL) and key-value stores (Memcache, Redis)
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Experience with front-end web technology, bonus points for React
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Experience with web architecture at scale (20krpm and above)
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Experience with PostGIS, or any geography-heavy applications
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Experience with "NoSQL" data backends (Redis, MongoDB, ElasticSearch)
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Experience solving logistical problems with software
Life at Deliveroo
We are a growing team, with very large impact, seeking to answer some of the most interesting questions out there. We move fast, we’re always looking for new ideas and we’re very transparent about the decisions we make and why we make them.
There are so many questions we need to answer and plenty more we haven’t even encountered. How do data and technology help restaurants to grow as consumer habits change? How can we predict what someone wants to order for dinner long before the idea has even crossed their mind? At Deliveroo these are just some of the tough problems we are solving - and there is no challenge that cannot be yours. No solution is owned by a particular team, which means the scope for growth and personal impact is enormous.
Diversity
We believe a great workplace is one that represents the world we live in and how beautifully diverse it can be. That means we have no judgement when it comes to any one of the things that make you who you are - your gender, race, sexuality, religion or a secret aversion to coriander. All you need is a passion for (most) food and a desire to be part of one of the fastest growing start-ups around.
- Work experience as Python developer
- Should have experience in developing and working on consumer facing web/app products on in Django framework
- Should have experience working with react js front end design.
- Thorough knowledge of data stores, MyScore AWS services and should have experience with EC2, ELB, AutoScaling, CloudFront, S3
- Experience in Frontend codebases using HTML, CSS and Javascript
- Good understanding of Data Structures, Algorithms and Operating Systems
- Good experience of developing and integrating APIs
- Knowledge of object-relational mapping (ORM)
- Able to integrate multiple data sources and databases into one system (mysql)
- Understanding of front-end technologies, such as JavaScript, HTML5, and CSS3
- Proficient understanding of code versioning tool (git)
- Good problem-solving skills
o Minimum 8 years of overall experience in software development.
o Experience as a Lead developer .
o Experience with AWS,Architecture, Node js.











