Sr. Backend Developer

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.

Role & Responsibilities

As a Staff Engineer at Locus, you will play a critical role in defining and driving our backend architecture as we scale globally. You’ll own key systems that handle high volumes of data and transactions, ensuring performance, reliability, and maintainability across distributed environments.

Key Responsibilities-

• Own one or more core applications end-to-end, ensuring reliability, performance, and scalability.
• Lead the design, architecture, and development of complex, distributed systems, frameworks, and libraries aligned with Locus’s technical strategy.
• Drive engineering operational excellence by defining robust roadmaps for system reliability, observability, and performance improvements.
• Analyze and optimize existing systems for latency, throughput, and efficiency, ensuring they perform at scale.
• Collaborate cross-functionally with Product, Data, and Infrastructure teams to translate business requirements into technical deliverables.
• Mentor and guide engineers, fostering a culture of technical excellence, ownership, and continuous learning.
• Establish and uphold coding standards, conduct design and code reviews, and promote best practices across teams.
• Stay ahead of the curve on emerging technologies, frameworks, and patterns to strengthen Locus’s technology foundation.
• Contribute to hiring by identifying and attracting top-tier engineering talent.

Ideal Candidate

• Strong staff engineer profile
• Mandatory (Experience 1): Must have 9+ years in backend engineering with Java, Spring/Spring Boot, and microservices building large and schalable systems
• Mandatory (Experience 2): Must have been SDE-3 / Tech Lead / Lead SE for at least 2.5 years
• Mandatory (Tech skills 1): Strong in DSA, system design, design patterns, and problem-solving
• Mandatory (Tech skills 2): Proven experience building scalable, reliable, high-performance distributed systems
• Mandatory (Tech skills 3): Hands-on with SQL/NoSQL databases, REST/gRPC APIs, concurrency & async processing
• Mandatory (Tech skills 4): Experience in AWS/GCP, CI/CD pipelines, and observability/monitoring
• Mandatory (Communication): Excellent ability to explain complex technical concepts to varied stakeholders
• Mandatory (Company): Product companies (B2B SAAS preferred)
• Mandatory (Stability): Must have stayed for at least 2 years with each of the previous companies
• Mandatory (Education): B.Tech in computer science from Tier 1, Tier 2 colleges

We are seeking a highly skilled Backend Developer to join our team and contribute to the development and improvement of both our customer-centric SaaS platform and internal systems. As a Backend Developer, you will be responsible for designing, implementing, and maintaining the server-side logic of our application, ensuring high performance, scalability, and security.

As a Backend Developer with expertise in Java, and PostgreSQL, you will play a critical role in developing and maintaining the backend infrastructure of our SaaS and internal platforms, ensuring its reliability, scalability, and performance. Join our team and be a part of building cutting-edge software solutions that empower our customers and drive business growth.

Responsibilities:

• Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to understand project requirements and translate them into technical specifications.
• Design and develop server-side logic, APIs, and database schema to support the functionality and performance requirements of our SaaS platform.
• Write clean, modular, and well-documented code using any relevant programming language preferably Java with SpringBoot.
• Optimize the backend systems for maximum speed and scalability, ensuring high performance and responsiveness of the application.
• Implement data storage solutions using PostgreSQL or other relational databases, ensuring data integrity and security.
• Conduct thorough testing and debugging to identify and resolve any issues or bugs in the backend code.
• Stay up-to-date with emerging technologies, industry trends, and best practices in backend development and contribute to the continuous improvement of our development processes.

Requirements:

• Proven work experience as a Backend Developer or similar role, with a focus on server-side development.
• Proficiency in working with relational databases, particularly PostgreSQL, and writing efficient SQL queries.
• Familiarity with SaaS concepts and architecture.
• Experience with API design and development, including RESTful APIs.
• Solid understanding of software development principles, including object-oriented programming, design patterns, and data structures.
• Experience with version control systems, such as Git.
• Strong problem-solving and analytical skills, with keen attention to detail.
• Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.
• Bachelor's degree in Computer Science, Engineering, or a related field is preferred, but not mandatory.

About Us

Our client is the ultimate secure platform to trade popular cryptocurrencies and earn an interest up to 17% p.a. on your crypto holdings. 

We offer  trading with the lowest fee in the market and offer the highest interest on your crypto assets to help compound your wealth, all on a single platform.

With our all-in-one trading and investment solutions, we empower users to navigate the crypto-verse.

Job Location: Bangalore

Role & Responsibilities

• 4+ years of recent hands-on coding and in-depth knowledge of building applications in the python framework.
• Have in-depth knowledge of development in Django framework, hands-on experience in working with WebSockets, deploying and managing applications in AWS.
• Have hands-on experience in working with storage, server, and client technologies
• Have testing, and debugging skills, and have experience in working with git, aws.
• Solid OOP and software design knowledge – you should know how to create software that’s extensible, reusable, and meets desired architectural objectives.
• Work with the product team to understand end-user requirements, formulate use cases, and then translate that into a pragmatic and effective technical solution.
• Dive into difficult problems and successfully deliver results on schedule.
• Can take ownership of end to end system
• Firefight with the production issues
• Experience in a peak performance organization, preferably a tech startup

Looking for someone who can join in a month's notice

Role- Java Developer

Location- Bangalore, Mumbai

Experience- 5-8 yrs

• 5-7 Yrs of experience building enterprise level applications  using Java Restful API’s, Spring(Core, aspect ,boot & batch) and related frame works.
• Development experience in core java
• Expertise in multi-tiered Java EE design and programming , solid understanding and multi-tiered web based applications
• Solid data structures and algorithm experience
• Strong expertise in all the following Java-based technologies
• Spring
• Hibernate Framework (integration layer and Web MVC)

This is for our Chennai Office , however work from home can be considered during pandemic or lockdowns .

• Java / JavaScript Developer Job Description (Minimum 2 years Experience in Java)
• Good in Core Java, Multithreading, J2EE, web services (REST, SOAP).
• In-depth knowledge on Java Script and object-oriented technique .
• Should be able to work independently
• Familiar on Front-end technologies like AngularJS framework, HTML5, CSS3 is a real Plus

1. 2+ years of experience building REST APIs with Java
2. 1+ years of experience in maintaining REST APIs documentation.
3. 2+ years of experience programming and delivering in a production environment
4. Expertise working with data structures and algorithms
5. Proficiency in object-oriented programming and experience applying modern design patterns.