Backend Engineer

Job Overview:

We are looking for a skilled Senior Backend Engineer to join our team. The ideal candidate will have a strong foundation in Java and Spring, with proven experience in building scalable microservices and backend systems. This role also requires familiarity with automation tools, Python development, and working knowledge of AI technologies.

Responsibilities:

• Design, develop, and maintain backend services and microservices.
• Build and integrate RESTful APIs across distributed systems.
• Ensure performance, scalability, and reliability of backend systems.
• Collaborate with cross-functional teams and participate in agile development.
• Deploy and maintain applications on AWS cloud infrastructure.
• Contribute to automation initiatives and AI/ML feature integration.
• Write clean, testable, and maintainable code following best practices.
• Participate in code reviews and technical discussions.

Required Skills:

• 4+ years of backend development experience.
• Strong proficiency in Java and Spring/Spring Boot frameworks.
• Solid understanding of microservices architecture.
• Experience with REST APIs, CI/CD, and debugging complex systems.
• Proficient in AWS services such as EC2, Lambda, S3.
• Strong analytical and problem-solving skills.
• Excellent communication in English (written and verbal).

Good to Have:

• Experience with automation tools like Workato or similar.
• Hands-on experience with Python development.
• Familiarity with AI/ML features or API integrations.
• Comfortable working with US-based teams (flexible hours).

Experience: 5 TO 8

Location: MUMBAI

Wissen Technology is now hiring for a Java Developer - MUMBAI 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 TO 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 2200+ 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.

Responsibilities :

●     Designing and developing robust and scalable server-side applications using Python, Flask, Django, or other relevant frameworks and technologies.

●     Collaborating with other developers, data scientists, and data engineers to design and implement RESTful APIs, web services, and microservices architectures.

●     Writing clean, maintainable, and efficient code, and reviewing the code of other team members to ensure consistency and adherence to best practices.

●     Participating in code reviews, testing, debugging, and troubleshooting to ensure the quality and reliability of applications.

●     Optimising applications for performance, scalability, and security, and monitoring the production environment to ensure uptime and availability.

●     Staying up-to-date with emerging trends and technologies in web development, and evaluating and recommending new tools and frameworks as needed.

●     Mentoring and coaching junior developers to ensure they grow and develop their skills and knowledge in line with the needs of the team and the organisation.

●     Communicating and collaborating effectively with other stakeholders, including product owners, project managers, and other development teams, to ensure projects are delivered on time and to specification.

You are a perfect match, if you have these qualification :

●     Strong experience in Python and server-side development frameworks such as Flask or Django.

●     Experience in building RESTful APIs, web services, and microservices architectures.

●     Experience in using database technologies such as MySQL, PostgreSQL, or MongoDB.

●     Familiarity with cloud-based platforms such as AWS, Azure, or Google Cloud Platform.

●     Knowledge of software development best practices such as Agile methodologies, Test-Driven Development (TDD), and Continuous Integration/Continuous Deployment (CI/CD).

●     Excellent problem-solving and debugging skills, and the ability to work independently as well as part of a team.

Strong communication and collaboration skills, and the ability to work effectively with other stakeholders in a fast-paced environment

The ideal candidate is a self-motivated, multi-tasker, and demonstrated team-player. You will be a lead developer responsible for the development of new software products and enhancements to existing products. You should excel in working with large-scale applications and frameworks and have outstanding communication and leadership skills.

Qualifications

• 2-4 years of relevant experience in developing complex enterprise applications using Java, Spring Boot, Message Queues ( like Apache Kafka, RabbitMQ, etc...),Multithreading, and SQL
• Ability to write high-quality code with speed
• Should have experience in building various end to end feature
• Product and startup background is preferred
• Have a good understanding of SDLC, Agile, and design patterns
• Have a working experience with Github and Jira tool
• Should be able to mentor and lead the team in fast-paced environments.
• High growth\Startup mindset
• Open Source contribution\Active Git profile big plus
• Interest in cloud security is a big plus
• Experience developing data center applications in cloud security, backup, and disaster
• recovery, is a big plus
• Knowledge of AWS\Azure is a big plus

Responsibilities:

• Design and develop large scale web applications using Node.js; 
• Full-cycle projects and product development; 
• Focus on software development and build Restful API's; 
• Contribute to the overall software development life-cycle including requirements gathering, analysis, design, development, release/version control, testing, deployment, and support; 
• Be a part of an agile-based team 

Requirements:

• Exposure to ES6 knowledge of REST API Design and Development in Node.js. 
• Basic Knowledge of Web Socket.
• Strong Knowledge of Javascript, Good exposure to Redis, MongoDB.
• Should be having a basic understanding of HTML5, CSS3, Bootstrap4.

We Offer:

• 5 Days Working
• Competitive Salary.
• Knowledge-Based Hierarchy 
• Trending Technology Development
• Career Development Programs.
• Tremendous Scope of Responsibilities and KPIs Aligned with Individual and Organisational Goals.
• Exposure to working with a team size of 65+.
• Good Project Incentives and Rewards.
• Explore Incredible India!Workation Programmes with Airfare, Hotelstay.
• Work-Life Balance.
• Fantastic Team Spirit with Creative, Fun and Open Office Work Culture.

About us:

HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.

We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.

To know more, Visit! - https://www.happyfox.com/

We’re looking for an experienced Backend Engineer to join our growing team of engineers to help build and maintain our products. You should have prior experience being responsible for building sufficiently complex features by yourself. 

Responsibilities:

• Implement product features by writing clean, robust, reusable code with tests
• Bring new ideas and best practices to improve the team and the codebase

Requirements:

• At least 3 years of relevant professional experience
• Sound knowledge of programming languages like Python
• Experience working with web application frameworks like Django
• Experience in building web services using relational databases like PostgreSQL or NoSQL databases like MongoDB
• Experience developing REST APIs and a good understanding of best practices around building APIs
• Good communication skills
• Passion to solve complex technical problems and troubleshoot the issue

Not just a delivery company…

RaRa Delivery is revolutionising instant delivery for e-commerce in Indonesia through data driven logistics.

RaRa Delivery is making instant and same-day deliveries scalable and cost-effective by leveraging a differentiated operating model and real-time optimisation technology. RaRa makes it possible for anyone, anywhere to get same day delivery in Indonesia. While others are focusing on ‘one-to-one’ deliveries, the company has developed proprietary, real-time batching tech to do ‘many-to-many’ deliveries within a few hours.. RaRa is already in partnership with some of the top eCommerce players in Indonesia like Blibli, Sayurbox, Kopi Kenangan and many more.

We are a distributed team with the company headquartered in Singapore 🇸🇬 , core operations in Indonesia 🇮🇩 and technology team based out of India 🇮🇳

Future of eCommerce Logistics.

• Data driven logistics company that is bringing in same day delivery revolution in Indonesia 🇮🇩
• Revolutionising delivery as an experience
• Empowering D2C Sellers with logistics as the core technology

• 5 - 7 years Experience with the following technologies: Core Java/J2EE, Spring Boot, Creating API, Hibernate, JDBC, SQL/PLSQL, messaging architecture, REST/Web services, Linux
• Expertise in application, data and infrastructure architecture disciplines
• Advanced knowledge of architecture, design and business processes
• 4+ years of Java, J2EE development experience
• Strong technical development experience in effectively writing code, performing code reviews, and implementing best practices on configuration management and code refactoring
• Experience in working with vendor applications
• Experience in making optimized queries to MySQL database
• Proven problem solving and analytical skills
• A delivery-focused approach to work and the ability to work without direction
• Experience in Agile development techniques, including Scrum
• Experience implementing and/or using Git
• Ability to work collaboratively in teams and develop meaningful relationships to achieve common goals
• Bachelor degree in Computer Science or related discipline preferred

WHAT YOU’LL BE DOING: 

• Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement. 
• Collaborate with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience. 

• Develop ideas for new programs, products, or features by monitoring industry developments and trends. 
• Record data and report it to proper parties, such as clients or leadership. 
• Participate in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members. 
• Take the lead on projects, as needed. 
• Be involved and participate in the overall application lifecycle. 

• Build high-quality reusable code that can be used in the future. 
• Develop functional and sustainable web applications with clean codes. 
• Conduct UI tests and optimize performance. 
• Manage cutting-edge technologies to improve applications. 

QUALIFICATIONS: 

• Bachelor’s degree in Computer Science, Computer Programming or relevant field. Master’s Degree in a related field is preferred. 
• 5-7 years of relevant experience 
• Must be an expert programmer, skilled at computer languages such as HTML, C+++, C#, PHP, Python and Java. 
• Must understand Spring Core, Spring Boot, Spring MVC, Spring Data, JMS, Mysql, Redis, CouchDb, Micro Services, Docker, Kubernetes 
• Must be able to interpret and follow instructions related to the ultimate functionality of our IT-based product 

• Familiarity with front-end languages such as HTML, JavaScript and CSS 
• Must be comfortable with technology architecture and how a computer and its software functions. 
• Deadline driven, organized and understand how people view and understand content on the front-end 
• Proven experience in highly complex environments 
• Strong technical documentation skills 

• An ability to solve multifaceted technical issues in a fast-paced environment 
• Self-motivated and accountable for your work 
• Passionate about learning and continuous improvement 
• Excellent written and verbal communication skills 
• Ability to work overtime