Full Stack Engineer

Job Title: Full Stack Developer (Java + React)

Location: Bangalore

Experience Level: 6–10 Years

Employment Type: Full-time

Job Summary-

Wissen Technology is looking for a skilled Full Stack Developer with strong experience in Java (backend) and React (frontend) to join our engineering team. You will be responsible for designing, developing, and maintaining scalable web applications, collaborating with cross-functional teams, and delivering high-quality software solutions.

Key Responsibilities

• Design, develop, and maintain robust, scalable, and secure web applications
• Build RESTful APIs using Java-based frameworks
• Develop responsive and dynamic user interfaces using React
• Collaborate with product managers, designers, and other developers to define and deliver features
• Write clean, maintainable, and efficient code following best practices
• Perform code reviews and mentor junior developers
• Troubleshoot, debug, and upgrade existing applications
• Ensure application performance, quality, and responsiveness
• Participate in Agile/Scrum development processes

Required Skills & Qualifications

• Strong proficiency in Java (8 or above) and backend frameworks such as Spring Boot
• Solid experience with React.js, including hooks, state management, and component lifecycle
• Experience building and consuming REST APIs
• Familiarity with frontend technologies: HTML5, CSS3, JavaScript (ES6+)
• Knowledge of databases such as MySQL, PostgreSQL, or MongoDB
• Experience with version control systems like Git
• Understanding of software development principles, design patterns, and data structures
• Familiarity with build tools like Maven or Gradle
• Basic understanding of cloud platforms (AWS, Azure, or GCP) is a plus

• Hands-on expertise in managing technical teams and work closely with business stakeholders
• Should be familiar with card testing and POS ecosystem.
• Experience with designing APIs and building platform integrations in Commerce, POS, FinTech and Payments
• Payment’s domain experience.
• Extensive experience on Base24 & SWITCH part for payment format.
• Exposure on ISO8583 Messaging system.
• API understanding and creation.
• Working knowledge on cryptographic algorithms (RSA, EC, AES, SHA variants), TLS/SSL protocols. C Symetric and A symetrics, K.M.S.
• Digital Payments technical knowledge - QR/ POS/ UPI/ BQR
• Understanding of CI/CD pipelines, Kubernetes, containerization, Docker
• Must have strong technical skills in Android APK and iOS development Concept and Web services.
• Supportability, monitoring, ops in general.
• Accurate cost models to deploy and operate
• Extensive experience in TLOG’s, data integration with downstream applications, and impact of POS changes on different financial, legal, compliance, loss prevention, etc. applications.
• Extensive experience with payment systems 7861 (EMV, payment middleware, encryption, tokenization, settlement, offline scenarios,).
• Extensive experience with different types of payment methods including credit, debit, gift cards (Both closed loop and open loop), PLCC, PayPal, AliPay, checks, etc. as well as different payment form factors like Tap N Go, contactless, swipe, EMV, Mobile, etc.
• Extensive experience with payment devices (pin pads, printers, registers, scanners).
• Experience in Node.js / Java / Python, building REST APIs, with experience/exposure to front end stack like JavaScript & React / Angular. 
• Experience with Storage systems - RDBMS, NoSQL (Cassandra/MongoDB), Redis/Memcache/Aerospike.
• Experience in messaging tools like Kafka/AWS Kinesis etc...
• Design expertise for performance, scalability, fault tolerance and high availability

• Experience with POS systems and Payments domain.
• Demonstrated experience for systems architecture, design, and integration for POS systems
• Java and/or Node.js. Experience building micro services (REST APIs) using Node.js
• Experience with one or more RDBMS databases like MySql, PostGreSQL
• Experience with one or more NoSQL databses like MongoDB, Cassandra, DynamoDB, Aerospike, Elastic Search, Redis, neo4j etc.,
• Caching technologies like: Redis, Elasticache,
• Cloud Providers like: AWS/ Google Cloud / Azure
• CI / CD : Jenkins, Docker, Kubernete
  

Role: Senior Full Stack Java Developer

Company: Feuji Software Solutions Pvt Ltd.

Mode of Hire: Permanent Position

Experience: 5 – 8 years

Work Location: Hyderabad, India

About Feuji

Feuji, established in 2014 and headquartered in Dallas, Texas, is a rapidly growing global technology services provider. With strategic locations including a Nearshore facility in San Jose, Costa Rica, and Offshore Delivery Centers in Hyderabad, and Bangalore, we cater to a diverse clientele.

Our team of 400+ talented engineers specialize in delivering cutting-edge solutions in managed cloud services, cybersecurity, product and quality engineering, and data-driven insights. Collaborating with industry leaders such as Microsoft, HP, GSK, and DXC Technologies, we empower organizations to achieve their business goals.

At Feuji, we prioritize creating 'Happy Teams' and fostering a culture of innovation, growth, and excellence.

Position Summary

The Senior Software Engineer is responsible for the design, development, quality, and release of our organization's web and mobile applications.

Essential Functions

• The Senior Software Engineer is responsible for the design, development, and release of our organization's web and mobile applications. 

• Working closely with Product owners and other stakeholders to understand the business need and design software solutions to meet the product requirements 

• Develops applications using Application programming interfaces (APIs) and service-oriented architecture 

• Develops unit and automation test scripts under the test-driven development lifecycle 

• Contributes to the coding best practices by participating in code reviews and supporting code merges and releases.

Education

• Bachelor's Degree Computer Science, Engineering, or related field preferred

Work Experience

• Typically 5+ years Hands-on object-oriented programming in Java and Javascript (UI) frameworks

Skills

• Understanding of all phases of Software development life cycle

• Software Development Experience with Java

• Experience with UI modern framework like AngularJS or ReactJS

• Experience with microservice architecture, end-to-end UI/API integration, and knowledge of API protocols like REST, gRPC, and graphQL

• Familiar with coding and testing best practices as well as ability to understand complex business problems and design high quality technical solutions.

• Knowledge about the Caching technologies and DBMS technologies like Oracle or MySQL, Postgres, MongoDB

• Strong Problem-solving, communication and organizational skills

JOB DESCRIPTION :

COMPANY DESCRIPTION

Gurucul is transforming enterprise security with user behavior and predictive analytics. If you enjoy

working in a fast-paced, rapidly growing and progressive environment, this is the position for you.

Gurucul offers competitive compensation packages and full benefits for all full-time employees.

JOB DESCRIPTION: Technical Lead

Seeking a Java Technical Lead Developer, who will create scalable multi-tier web applications in an agile

software development environment. Applicant should have significant hands-on experience in designing

and coding server components.

The ideal candidate must be able to design and develop enterprise-scale information security software

in collaboration with the engineering team in India and with their counterparts in the US.

SKILLS AND QUALIFICATIONS

• 8 to 14 years experience working as a Java developer on Web/EE applications, ideally multi-tenant SaaS products and at least 3 years as a tech lead.
• Expert in core Java development and Java EE technologies.
• Solid experience building server-side components for enterprise applications.
• Good understanding of browser-side development using any one of the frameworks like Angular, React etc.
• Good understanding of Single-page applications architecture.
• Good understanding of HTML/HTML5, CSS/CSS3, Javascript and object-oriented javascript Should be well versed with server-side and client-side design patterns and anti-patterns.
• Experience using Spring and Hibernate in a commercially available software product.
• Good experience in MVC Architecture like Grails, Spring MVC, Servlets and JSP API programming.
• Exposure to maven/Gradle build script.
• Exposure/Experience with Hadoop and related big data technologies.
• Experience with Git/Gitlab.
• Experience in JMS, Kafka, and Logstash would be considered an added advantage.
• Good understanding of REST APIs and JSON.
• Expert in RDBMS like MySQL 8, SQL, SQL query design, tuning, and experience working with very large databases.
• Experience in multi-threading, and building cluster-aware applications.
• Strong communication skills.
• BS/MS degree in Computer Science, Engineering or related discipline.
• Experience with DevOps pipelines using tools like Jenkins, Gitlab, and Nexus would be a big plus.
• Experience in working in SCRUM as a scrum master.

WHAT TO EXPECT

• Provide inputs in the architecture and design of enterprise applications targeting Fortune 500 companies.
• Development of web-based Enterprise Applications using cutting-edge technologies.
• Gain an insight into enterprise security challenges as it relates to information/Application and infrastructure protection.
• Work closely with a brilliant team based in the USA and India that has successfully launched several software companies.

LOCATION

• The position is based in Pune (India)

Us: At https://www.bito.co" target="_blank">Bito, we are on a mission to help developers get work done and collaborate like never before. 

You: Hungry, results-driven with a startup mindset.

Our company is a very early-stage startup that hopes to dramatically improve how developers collaborate, especially in a remote world. Our founders have started, built, and taken a company public worth over $2B.  We are looking to take our learnings, learn a lot along with you, and do something more exciting this time. We are on that initial dreamy, crazy journey of finding product market fit. Although the early journey will be difficult, we can assue you that it will be incredibly rewarding too!

We are looking for software engineers who enjoy solving challenging and complex problems. Design and write code which is easy to understand and support with good understanding of algorithms and data structures. You will work in the team leading our efforts to bring our app to developers around the world. 

We are building this company with a fully remote approach, with our main teams for time zone management in the US and in India.

Requirements:

• Minimum 3+ years of hands-on development experience
• Strong in Java, Go, JavaScript.
• Having hands on experience with programming in other languages is a plus
• Strong understanding and experience with high scale and high-performance distributed systems
• Well versed with REST and micro services as well API design experience
• Basic knowledge of spring and AngularJS
• Hands on experience with Git, CI/CD frameworks
• Hands on experience with NO SQL, SQL data stores
• Making complex technical and design decisions
• Conducting performance tests and performance improvement
• Being a part of and supporting our user community
• Critical thinker and good problem-solver.
• Prior experience with building extensions/plugins for browsers, IDEs is a plus
• Prior experience with AWS, Docker, Kafka is a plus

You will make an ideal candidate if you have: 

• Overall 6+  years of software development experience in building web-based and highly scalable applications 

• Excellent understanding of core computer science concepts like algorithms, data structure, system design, OOP, etc. 

• Deep knowledge and development expertise in Core Java and SpringBoot 

• Experience in using dockers and Linux.

• Hands-on coding experience in developing web applications with REST APIs

• Good understanding/exposure to Kafka and Elastic.(must have)

• Log stash understanding is add-on

• Worked in a CI/CD environment with Jenkins and handled deployments by yourself 

• Experience working in an agile team with software engineering practices like automated testing, test-driven-development, continuous integration, etc is a big plus. 

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

• Work as part of a full stack product team to develop solutions to ensure optimal experiences for our customers, riders, and restaurants

• Utilise a variety of backend technologies to build scalable products

• You'll take part in decisions related to how we undertake new projects

• 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.

• Pride in readable, well-designed, well-tested software

• 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)

• Experience with TDD environments (RSpec, Minitest, Capybara, Selenium)

• Experience with relational databases (PostGreSQL, MySQL) and key-value stores (Memcache, Redis)

• Experience with front-end web technology, bonus points for React

• Experience with web architecture at scale (20krpm and above)

• Experience with PostGIS, or any geography-heavy applications

• Experience with "NoSQL" data backends (Redis, MongoDB, ElasticSearch)

• 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.