Java Developer

Mandatory (Experience 1): Must have 9+ years in backend engineering with Java, Spring/Spring Boot, and microservices building large and scalable systems with clear production scale or reliability impact (latency, throughput, uptime, etc.) mentioned in the resume

Mandatory (Experience 2): Must have been SDE-3 / Tech Lead / Lead SE for at least 2.5 years (should be there in the resume titles)

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 with architecture ownership and experience in core backend/platform services rather than feature teams

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) - Top New Age, Fast-scaled, Tech-First Product Companies (Like Series B+ / Unicorn Indian startups, or Tech-first Global companies like Amazon, Google, Microsoft etc)

Mandatory (Stability): Must have stayed for at least 2 years with each of the previous companies

Mandatory (Education): B.Tech in computer science or related field from Tier 1, Tier 2 colleges

Mandatory (Note 1): Education can be ignored for candidates with proven experience in strong, reputed product companies

Are you looking for a super-challenging role designing backend systems that scale to 1000+ TPSs in one of India's fastest growing, profitable near-Unicorns with businesses spanning Lending, E-comm and UPI? Then this is the role for you.

Client Company is a profitable, rapidly scaling unicorn which is extremely well capitalized. Client has a very strong moat in the consumer lending space on the back of which it is entering into additional large markets such as E-comm and UPI.

Client company is now entering its next phase of growth from a fast-scaling startup to a robust, high-scale financial platform serving millions of users daily.

You'll design systems built for 10x100x growth, make the key technical trade-off calls, and stay deeply hands-on. Beyond building, you'll mentor engineers and work directly with founders and product teams to translate business goals into scalable, reliable systems.

This role is an opportunity to:

• Shape the next-generation architecture for a high-throughput fintech system
• Build systems designed to scale 10x100x from current volumes
• Solve real-world problems across performance, reliability, and financial-grade security

Responsibilities

• Design and evolve the platform architecture to support 10x100x growth
• Own systems end-to-end from the first design decision to production impact
• Lead system design discussions and set the long-term technical direction for the platform
• Identify scale bottlenecks early and drive solutions
• Mentor and elevate engineers through design reviews, code quality, and architectural thinking
• Partner directly with founders and product teams to turn business priorities into scalable systems
• Operate with high ownership in a fast-paced environment where priorities evolve quickly
• Drive projects independently own timelines, coordinate with teams, and see delivery
• Conduct rigorous code reviews and champion engineering best practices across the team
• Proactively identify gaps in the system and come up with concrete approaches to address them
• Solve technical problems across the company not just confined to a single pod
• Challenge existing architecture with data and reasoning push back when its the right call, and drive adoption of better approaches.

Requirements

• 7-12 years of experience in backend or platform engineering
• Strong computer science fundamentals (preferably from IIT, BITS, NITs)
• Strong proficiency in backend development (Node.js, Java, Go, or equivalent)
• Proven experience scaling systems through high-growth startup phases (1→10 or beyond)
• Track record of building and owning critical platforms or systems from scratch
• Exposure to high-volume transactional systems; fintech or lending is a strong plus
• Bias for action - moves fast, makes sound decisions, owns outcomes end-to-end
• Comfortable navigating ambiguity and evolving priorities in a startup environment
• Strong problem-solving skills ability to break down complex technical challenges and arrive at pragmatic, well-reasoned solutions
• Hands-on experience with platform engineering developer tooling, shared services, infrastructure abstractions, or internal platforms

🧠 Job Description: Senior Java Developer (8+ Years Experience)

Location: Mumbai, India

Employment Type: Full-time, Hybrid mode of working

Company: Wissen Technology

Website: www.wissen.com

🚀 About Wissen Technology

Wissen Technology is a specialized technology consulting firm delivering cutting-edge solutions to global leaders in Banking & Finance, Telecom, and Healthcare. Established in 2015 and part of the Wissen Group (founded in 2000), Wissen has scaled rapidly with impressive impact and recognition.

• 🌍 Offices in US, UK, India, Australia, Mexico, and Canada
• 👥 1700+ Wissen Technology professionals; part of a 4500-strong Wissen Group
• 🏆 Great Place to Work® Certified
• 🧠 Featured as a Top 20 AI/ML Vendor (CIO Insider, 2020)
• 📈 Achieved 400% revenue growth in 5 years (with zero external funding)
• 💼 Delivered $1B+ worth of projects to 50+ Fortune 500 companies

Learn more about our work and thought leadership:

📄 Articles by Wissen | 💼 LinkedIn

About the Role

We are seeking an experienced Senior Java Developer with 8+ years of hands-on expertise in building scalable, high-performance applications. The ideal candidate will have strong fundamentals in Java, OOPS, Multithreading, Spring concepts, and SQL, and will play a key role in designing, developing, and optimizing enterprise-grade solutions.

Key Responsibilities

• Design, develop, and maintain complex applications using Core Java and Spring frameworks
• Apply advanced Object-Oriented Programming (OOPS) principles to deliver clean, modular, and reusable code
• Implement and optimize multithreaded applications for high-performance systems
• Work with SQL databases for efficient data modeling, query optimization, and integration
• Collaborate with cross-functional teams to gather requirements and translate them into technical solutions
• Conduct code reviews, troubleshoot issues, and ensure adherence to best practices
• Mentor junior developers and contribute to technical knowledge sharing within the team
• Ensure application scalability, performance tuning, and security compliance

Required Skills & Qualifications

• Bachelor’s/Master’s degree in Computer Science, Engineering, or related field
• 8+ years of professional experience in Java development
• Strong expertise in Core Java, OOPS, and Multithreading
• Hands-on experience with Spring concepts (Spring Core, Spring MVC, Spring Boot preferred)
• Proficiency in SQL and database design (MySQL, Oracle, PostgreSQL, etc.)
• Solid understanding of software development life cycle (SDLC) and Agile methodologies
• Strong analytical, problem-solving, and communication skills

🌟 Why Wissen?

Join a company that combines start-up agility with enterprise stability. Work alongside some of the brightest minds from institutions like MIT, Wharton, IITs, IIMs, and NITs. Be part of mission-critical projects for Fortune 500 giants, and grow in a culture that invests in your future.

Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore/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. - 3 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 Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider. 

Knowledge & Experience required:

·        Bachelor's degree in Computer Science Engineering or equivalent degree.

·        7 years of development experience as a seasoned Java developer

·        7 years of experience in developing enterprise applications using enterprise Java 8 and has worked both on Web and Server side technologies.

·        A strong Java Backend Developer with Core Java 8, Spring, Spring Boot, Hibernate, REST Web-services.

·        Expertise in Java Unit Testing Frameworks and tools such as JUnit, TestNG, Mockito etc.

·        As a Senior developer, must be comfortable switching tasks between Web Services, APIs, Batch Job engine or Web Development.

·        Passionate Java developer who is also a problem solver and has a very good understanding of core and advanced Java concepts.

·        Good understanding of database and data fundamentals in SQL Server 2017, Oracle and NoSql databases.

·        Good understanding of Web Service concepts and experience building RESTful services is required.

We focus on client adoption of disruptive technologies, technology architecture and providing specialized skills related to integration, custom software engineering, testing, application modernization, agile and more. We help our clients with the most complex projects including working in open web platforms, DevOps platforms as well as intelligent Computing and Architecture enhancement.

We are looking for hands on, smart thinking Applications developer to join our fast-growing team of talented professionals. You will have the opportunity to work on large enterprise solutions and deliver solutions that deliver business performance for our customers.

WORK YOU’LL DO

• Design and develop microservices/APIs using either Java/Spring boot, ISTIO, Kubernetes, Docker, CI / CD Pipelines
• You would scale micro services using Kafka or similar messaging systems.
• Collaborate with clients, architects, and application architectures to understand the operational objectives and purpose of the future system integration.
• Understand the points of integration between the different systems and highlight the potential risks associated with the delivery of solutions
• Collaborate with Functional Designers and Developers in order to find best solutions
• Produce detailed functional and technical specifications.
• Assist in producing solutions with threat assessments and associated security awareness.
•  

WHAT WE ARE LOOKING FOR

• 5- 8 years of hands-on experience designing and developing microservices using either Java/Spring Boot
• 3-5 years of experience with system integration
• Minimum of 3 years of relevant experience with API concepts and technologies such as REST, JSON, XML, SOAP, YAML, GraphQL, and Swagger
• Experience developing within agile methodology using CI/CD pipeline
• Experienced in 3-tier, n-tier, cloud computing, microservices architectures and SOA.
• Good knowledge of integration architectures
• Experience supporting and/or implementing complex integration projects
• Excellent client management skills
• Experience with Data modelling would be an asset

QUALIFICATIONS

• Experience of working in an Agile Environment
• Ability to drive design from Stories and Requirements
• Adept at UML, Design Patterns, Reusable Services Development,
• Knowledge on Scaling Microservices

Job Description:

• Resource should be proficient in analyzing, designing and developing applications based on the requirements provided by business counterparts
• Developing and maintaining applications developed in Java, J2EE, Struts and Spring and possessing 3-layer architecture
• Good knowledge in Spring Boot, Hibernate, Angular JS, Docker, VUE JS and AWS
• Applications development or maintenance using ORM tools such as Hibernate
• Database management which includes DB design and maintenance, mostly related to 2016 and Oracle 19c, DB2
• Should have knowledge in Unix / Linux OS.
• Should have good knowledge in Shell scripting language
• Strictly adhere to the internal SDLC process quality standards set but the organization and providing the drive to the team to achieve the KPI and SLA targets
• Flexible to work in extended time
• Candidate should have good experience on Java / J2EE, Springboot, Hibernate / JPA, Oracle query, Web Services and Rabbit MQ.
• Should have minimum of 3 to 5 years of experience. Should be able to work on enhancement, maintenance and production support.
• Good to have hands-on experience on DEVOPS & API development.

Few words about Unify Technologies: Unify a Digital Engineering company. We help our clients by providing Digital Engineering Services to develop high-quality products. We have extensive experience in software product engineering and a successful track record of delivering on aggressive delivery plans without compromising on the quality in Cloud, Mobile, and Data practices.

If you are looking for a solid opportunity to put your Computer Science skills to test you are in the right place. We need some hard-core programming help to help enhance our Data management frameworks used to move data between platforms and systems seamlessly.

Employment Type: Full-Time

Position: Sr SDE - Senior Software Development Engineer (Java Back-End Development)

Project: Product-Apple’s Maps and Advertising Platforms

Experience: 4-8 Years

Key Skills: Java Programming + Spring Boot + REST / Java + SQL

Joining time: Immediate to 30 days

Work Location: Hyderabad - India

Education: Master’s/Bachelor’s degree in Computer Science, Statistics, Engineering or a related technical discipline will be preferred

Detailed Job Description: At UNIFY, great ideas have a way of becoming great products, services, and customer experiences very quickly. Bring passion and dedication to your job and there's no telling what you could accomplish. 

We are looking to hire extraordinary individuals with strong communication and interpersonal skills and ability to work effectively across multiple business and technical teams. As a part of this team, you will build cutting edge software service, one that is continually innovating and is proud of making a difference. 

You should be a self-starter, motivated, with exceptional interpersonal skills as well as a positive and flexible approach to problems. The applicant should have the ability to thrive in a fast-paced, tight deadline delivery timeline. As a part of this dynamic team, the applicant will help us build the product experience on a global scale. 

If you’ve responded positively to the above questions and want to work in a great, international team, that is passionate, creative, ambitious, open to knowledge-sharing, and loves to cooperate with each other - join us!

Key Qualifications:

• Minimum of 4 years experience implementing large-scale production systems

• Hands-on experience with design, development and productizing highly available, distributed and scalable transactional enterprise systems.

• Strong hands-on programming experience in Java/J2EE building middleware or backend applications.

• Strong development experience of microservices architecture in a highly distributed environment with web services, Spring, Spring Boot, Hibernate and SOA

• Experience with RDBMS like Oracle and NoSQL databases such as MongoDB, Couchbase, Elasticsearch

• Sharp troubleshooting skills and real-world systems deployment experience.

• Proven track record with rapid development cycles and demanding schedules

• Experience doing Software Development using Agile methodologies

• Understanding or experience working on Cloud technologies is a plus

Roles & Responsibilities:

• Design and implement web APIs.

• In this role, you will be involved in the end to end cycle of design, development and deployment of core services for mission-critical customer-facing applications. 

• Results-oriented and demonstrate a high degree of ownership and accountability.

• Experience handling distributed vendor resources

• Creative problem solver and excellent collaborator, who thrives in a fast-paced, innovative environment.

• Communicate quickly and effectively; vertically and horizontally through the organization.

• Influence others to get things done.

• Must possess excellent problem-solving & analytical skills.

• Handle ambiguity and solve problems despite uncertainties.

• Ability to lead large projects focusing on innovation, teamwork and results.

• Proven track record of achieving outstanding results in a professional career