Senior Backend Developer

JOB DESCRIPTION

Experience: 5-8 years

Location: Mumbai

Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 5-8 years
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.

About Us:

At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.

Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality. 

We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more. 

Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results. 

Today, Wissen Technology has a global footprint with 2000+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.

Website : www.wissen.com 

Work With Us

Get To Know Us First!

Freecharge a subsidiary of Axis Bank Limited founded in 2010, is a Fin-Tech organisation revolutionizing Financial Products through technology.

At our core, we’re a creative company. Ideas and pixels is where we live and we love building magical products that make our users feel ‘wow’. At Freecharge, you'll have the chance to do the best work of your life. We’re on a journey to build something new, something different and something innovative & that requires passion to build such incredible products.

Come join us and shape the future of Fin-Tech.

Do You Make The Cut?

We are looking for a motivated developer to join our agile team of developers as a Lead to mentor and as an individual contributor to drive best practices in the product.

You will be responsible for the design, architecture, and delivery of a feature/product with the highest quality. Providing the product with visible benefit to end-users in an iterative fast-paced environment by creating solutions suitable for the job in real-time.

Title: Lead SDE (Backend)

Location: Gurugram

Experience: 3-7 Yrs.

Education: Bachelor’s / Master’s in Software Engineering

Responsibilities

• In this lead role, you will be designing and developing complex software systems that have been successfully delivered to customers.
• Ensure the quality of design of systems by serving as a technical lead on our most demanding, cross-functional teams
• Build reusable code and libraries for future use.
• Build highly available, high performance, scalable software and you will work on distributed systems for massive-scale systems
• Responsible for code quality of the product being developed along with unit and integration testing.
• Mentor junior developers to improve their skills, and make them more effective, product software engineers.
• Communicate with technical teams, and senior management to collect requirements, describe software product features, technical designs, and product strategy.

Sounds Like You?

• 4+ years of software development experience with Enterprise Java (JDK 8 and above), Spring (Boot, MVC, AOP, DI), ORM Frameworks.
• 1+ years of experience contributing to the architecture and design (LLD, HLD, Solid principles and design patterns and scaling) of new and current systems.
• Strong experience in technically leading junior developers with a focus on the goal.
• Strong experience in data structures & algorithms and their space & time complexities.
• Solid understanding of multithreading, microservices, MVC and strong OO skills with demonstrated experience in developing complex and reusable APIs.
• Strong experience working with Databases like SQL & NoSQL.
• Experience working with microservices-based architecture.
• Experience in high traffic, highly scalable distributed system designs, complex web applications, and code reviews.
• Experience working in an Agile environment.
• Solid understanding of the full software development life cycle and the domain.
• Good to have knowledge of messaging systems like SNS/ SQS /Kafka etc.

Life at Freecharge!

Our Playground!

• 450+ FCian’s, at Gurugram & Bengaluru locations
• Collaboration spaces & A flat and transparent culture
• Wow Corners, fun & reading Zone
• Best learning and development opportunities

Benefits

• Day-care facility
• Comprehensive Insurance Policy
• Wellness Benefits like Health check-ins
• 26 Weeks Maternity & 2 Weeks Paternity Leaves
• Adoption Assistance Program
• On-Site Parking at all locations
• A chance to have a big impact early in your career

ARE YOU READY?

TO

#ChargeYourFuture

Role

Backend engineers at AssetSprout work on our products. They include software for Certified Financial Planners, their clients, and also internal admin tools. They work with the CTO, frontend engineers, and other backend engineers to deliver towards the company’s vision.

Responsibilities

• Develop and own product features end to end in a scalable, secure and maintainable way. The buck stops with you on whatever you own.
• Provide technical solutions through design, architecture and implementation. Wear multiple hats in delivering greenfield projects from concept to production. 
• Establish, advocate and bring your experience on coding styles, best practices, and in scaling the product from MVP to production.
• Iterate fast. Display maturity in prioritizing towards velocity while balancing quality. As a startup, we break or make on how fast we deliver.
• Teach and mentor other backend engineers. Focus on providing technical expertise and solutions regardless of how long one has been working professionally.

Requirements

• We are language and framework agnostic as long as you can pick up new technologies.
• Proficient and expert level coding skills with any of the programming languages, preferably Java, Kotlin. Experience in Python, C++, Scala etc. is welcome.
• Develop web applications and services using Spring Boot. Experience with Akka, Play, Flask, Django is welcome.
• Write automated tests with any of the frameworks. We measure success on how well your code is unit tested and integration tested.
• Advanced level understanding of RDMS systems, preferably Postgres. Working knowledge of non-relational databases such as DynamoDB, Cassandra is helpful
• Able to use CI/CD tools such as CircleCI, GitLab, Jenkins etc. and create workflows and pipelines to release to production every other day.
• Expert level understanding of RESTful APIs, pagination, networking concepts around HTTP, thread pools, and other server-side concepts.
• Solid experience of how AWS services work. Some cloud services directly relevant are Lambda, EC2, S3, Dynamo, RDS, Eventbridge, SQS, ElastiCache Redis, Load Balancers etc.

Good-to-haves

• Early or mid-stage startup experience
• Eager to work in a flat organization with no corporate politics
• Positive energy with a get-it-done attitude.
• Worked in a remote environment and high trust and high responsibility role
• Working knowledge of build systems like Gradle, Maven, Bazel, Webpack etc. We use Gradle

Are you a high-performing, collaborative, results-oriented and technologically savvy person who is keen on sales in the digital industry? Then this highly visible role is for you!

Our client is the Health-tech initiative of India's largest business house. Started in 2015, it empowers healthcare providers and consumers in India. All healthcare monitoring services are made available through an app that will help connect doctors, hospitals, pharmacies, laboratories, and consumers, enabling preventive and predictive healthcare. It helps the care-givers to track the entire patient journey from the initial appointment and maintaining their records, generating lab test reports to providing virtual consultation and home-care solutions. It is expected that this futuristic guide will strengthen the doctor-patient relationship and enhance the in-clinic experience.

As the Sr. Java Developer, you will be responsible for developing cutting edge health-tech applications that include high scale transaction processing, intelligent bot-based programs, and data analytics

What you will do:

• Building components for the companys advanced health-tech platform using Java, Solr, SpringBoot, DialogFlow
• Communicating effectively in a cross-functional product development team and presenting ideas and solutions effectively

What you need to have:

Role Description

The SDE 2/3 will be part of the engineering/development team in Games24x7 Pvt. Ltd. and will be responsible for taking ownership of the core products of the company. The applicant must have good communication, interpersonal, technical and analytical skills in order to take part in the collaborative and cooperative development process that delivers the high quality software we use to provide the best possible playing experience to our players. He/she must be an expert in the Java programming language and needs to be familiar with popular IDEs, tools and scripting languages on the Linux operating system. Familiarity with an RDBMS, preferably PostgreSQL, is essential to succeed in this position.

General Accountabilities/Job Responsibilities:

• Participate in the requirements analysis, design, development and testing of applications.
• Write clean and efficient code and stay hands-on with it.
• Write high level code, code review, unit testing and deployment.
• Ensure practical application of design principles with a focus on the user experience, usability, template designs, cross browser issues and client server concepts.
• Contribute to the development of project estimates, scheduling, and deliverables.
• Work closely with QA team to determine testing requirements to ensure full coverage and best quality of product.
• Take up the opportunities to mentor and guide junior team members in excelling their jobs.

Requirements:

• B.E. /B.Tech. in Computer Science or MCA from a reputed university.
• 3-12 years of experience in software development, with emphasis on JAVA/J2EE Server side programming.
• Hands on experience in core Java, multithreading, RMI, socket programing, JDBC, NIO, webservices and design patterns.
• Knowledge of distributed system, distributed caching, messaging frameworks, ESB etc.
• Experience in Linux operating system and PostgreSQL/MySQL/MongoDB/Cassandra database
• Additionally, knowledge of HBase, Hadoop and Hive is desirable.
• Familiarity with message queue systems and AMQP and Kafka is desirable.
• Experience as a participant in agile methodologies.
• Excellent written and verbal communication skills and presentation skills.
• This is not a fullstack requirement, we are looking for a purely backend expert.