Java Developer

Review Criteria

• Strong Senior Backend Engineer profiles
• Must have 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems
• Must have strong backend development experience using one or more frameworks (FastAPI / Django (Python), Spring (Java), Express (Node.js).
• Must have deep understanding of relevant libraries, tools, and best practices within the chosen backend framework
• Must have strong experience with databases, including SQL and NoSQL, along with efficient data modeling and performance optimization
• Must have experience designing, building, and maintaining APIs, services, and backend systems, including system design and clean code practices
• Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)
• (Company) – Must have worked in product companies / startups, preferably Series A to Series D
• (Education) – Candidates from top engineering institutes (IITs, BITS, or equivalent Tier-1 colleges) are preferred

Role & Responsibilities

As a Founding Engineer at company, you'll join our engineering team during an exciting growth phase, contributing to a platform that handles complex financial operations for B2B companies. You'll work on building scalable systems that automate billing, usage metering, revenue recognition, and financial reporting—directly impacting how businesses manage their revenue operations.

This role is perfect for someone who thrives in a dynamic startup environment where requirements evolve quickly and problems need creative solutions. You'll work on diverse technical challenges, from API development to external integrations, while collaborating with senior engineers, product managers, and customer success teams.

Key Responsibilities-

• Build core platform features: Develop robust APIs, services, and integrations that power company’s billing automation and revenue recognition capabilities
• Work across the full stack: Contribute to both backend services and frontend interfaces, ensuring seamless user experiences
• Implement critical integrations: Connect company with external systems including CRMs, data warehouses, ERPs, and payment processors
• Optimize for scale: Build systems that handle complex pricing models, high-volume usage data, and real-time financial calculations
• Drive quality and best practices: Write clean, maintainable code while participating in code reviews and architectural discussions
• Solve complex problems: Debug issues across the stack and work closely with teams to address evolving client needs

The Impact You'll Make-

• Power business growth: Your code will directly enable billing and revenue operations for fast-growing B2B companies, helping them scale without operational bottlenecks
• Build critical financial infrastructure: Contribute to systems handling millions in transactions while ensuring accurate, compliant revenue recognition
• Shape product direction: Join during our scaling phase where your contributions immediately impact product evolution and customer success
• Accelerate your expertise: Gain deep knowledge in financial systems, B2B SaaS operations, and enterprise software while working with industry veterans
• Drive the future of B2B commerce: Help create infrastructure powering next-generation pricing models from usage-based to value-based billing.

We are looking for an experienced Java Developer with strong proficiency in Kafka and MongoDB to join our dynamic team. The ideal candidate will have a solid background in designing and developing high-performance, scalable, and reliable applications in a microservices architecture. You will be responsible for building real-time data processing systems, integrating various services, and ensuring smooth data flow across systems.

Key Responsibilities:

• Design, develop, and maintain scalable Java applications with a focus on performance and reliability.
• Build and maintain Kafka-based real-time data pipelines for handling high-volume, low-latency data.
• Work with MongoDB to design and optimize database schemas and queries for high throughput and availability.
• Collaborate with cross-functional teams to define, design, and implement new features and improvements.
• Troubleshoot and resolve issues related to system performance, scalability, and reliability.
• Ensure software quality through best practices, including testing, code reviews, and continuous integration.
• Implement and maintain security best practices in both code and data handling.
• Participate in agile development cycles, including sprint planning, daily standups, and retrospectives.

Required Skills & Qualifications:

• 7+ years of experience in Java development, with a strong understanding of core Java concepts (J2EE, multithreading, etc.).
• Hands-on experience with Apache Kafka, including setting up brokers, producers, consumers, and understanding Kafka Streams.
• Proficient in working with MongoDB for designing efficient data models, indexing, and optimizing queries.
• Experience with microservices architecture and RESTful APIs.
• Familiarity with containerization technologies like Docker and orchestration tools like Kubernetes is a plus.
• Strong understanding of distributed systems, message-driven architectures, and event streaming.
• Familiarity with version control systems like Git.
• Excellent problem-solving skills, with the ability to debug and optimize code for high-performance systems.
• Experience with CI/CD pipelines and automated testing.

About Company:

Nomiso is a product and services engineering company. We are a team of Software Engineers, Architects, Managers, and Cloud Experts with expertise in Technology and Delivery Management. 

Our mission is to Empower and Enhance the lives of our customers, through efficient solutions for their complex business problems. 

At Nomiso we encourage entrepreneurial spirit - to learn, grow and improve. A great workplace, thrives on ideas and opportunities. That is a part of our DNA. We’re in pursuit of colleagues who share similar passions, are nimble and thrive when challenged. We offer a positive, stimulating and fun environment – with opportunities to grow, a fast-paced approach to innovation, and a place where your views are valued and encouraged.

We invite you to push your boundaries and join us in fulfilling your career aspirations!

What You Can Expect from Us:

Here at NomiSo, we work hard to provide our team with the best opportunities to grow their careers.  You can expect to be a pioneer of ideas, a student of innovation, and a leader of thought. Innovation and thought leadership is at the center of everything we do, at all levels of the company. Let’s make your career great!

Responsibilities:

• Create, deploy, monitor, and maintain high performance and scalable microservices in the production.
• Design/develop Restful Services, data analysis, troubleshoot and resolve complex issues.
• Take end to end ownership for complex technical projects from planning through execution.
• Build, optimize, and manage ad solution Platform for the enterprise level. 
• Perform code review and manage technical debt
• Handle release deployments and production issues

Required Skills: 

• Overall 8+ years of experience in application development using Java with creating and deploying microservices using the Spring Boot framework.
• Strong experience in Maven.
• Good experience in unit(Junit) and integration testing.
• Experience in Microservices is a must.
• Experience in designing and developing REST based services / Microservice development.
• Experience with delivering projects in an agile environment using SCRUM methodologies.
• Candidate should have good communication skills (written and verbal)
• Excellent analytical and problem solving skills
• Any one of these database Mongo, Maria, RMQ, Postgres, or other NoSQL servers
• Experience in AWS and CI/CD

Good to have:

• Experience using container management tools such as Kubernetes, Docker and Rancher.

Task:

• Design, implement and maintain Java application phases
• To take part in software and architectural development activities
• Conduct software analysis, programming, testing and debugging
• Identifying production and non-production application issues
• Transforming requirements into stipulations
• Develop, test, implement and maintain application software
• Recommend changes to improve established Java application processes
• Develop technical designs for application development
• Develop application code for Java programs

We wish:

• Minimum 7 years of experience with excellent Java development skills
• Demonstrable hands-on experience of delivering solutions in a JavaEE 6 environment
• Open-source frameworks and standards Hibernate, Spring JDBC
• Hands-on experience with tools such as: Ant, Eclipse, Maven, SVN, SoapUI, JIRA, Bamboo
• WS concepts and protocols: WSDL, REST, SOAP, JMS, XSLT, XML Schema
• Experienced with one or more open-source ESB products (JBOSS FUSE ESB, Apache Camel, Apache servicemix) and / or message-oriented middleware and Active MQ, JMS
• Strong Java unit test skills
• Good experience in design patterns & design principles
• Experience with Webservices, PLSQL and SQL (Oracle 10g or above)
• Experience in Oops development with Core Java
• Desirable:
  • Experience with: Elastic Search, Smooks, Lucene, Jasper, Report
  • Domain driven design
  • Experience with NoSQL technologies: Casandra, Mongo DB
  • Experience with agile development practices (Eg Scrum) and continues integration environment
  • J2EE application and web containrs such as GlassFish, Jetty, Tomcat
  • CMMi-5 level process experience advantage

We Offer:

• Freedom to realize your own ideas & individual career & development opportunity.
• A motivating work environment, flat hierarchical structure, numerous company events which cannot be forgotten and fun at work place with flexibilities.
• Professional challenges and career development opportunities.

Position – Software Engineer

Essential Job Functions:

• Develop code for system changes or new modules within company and architecture according to specifications and standards
• Participates and contribute in formal and informal code reviews
• Prepares and executes accurate unit test plans, test data, and test modules and scripts
• Documents code changes and unit test results per Best Practices
• Performs production support and troubleshooting and maintenance (defect resolution)

Required Skills:

• 3-6 years of hands-on experience
• Expert level understanding of all phases of SDLC, preferably with Agile methodology.
• Strong coding experience with Java, J2EE, SQL. Strong experience in java frameworks, especially spring framework.
• Solid experience developing with SQL queries, stored procedures, views and triggers for Oracle databases.
• Understanding of multi-tier architecture, Web based development, and Services Oriented Architecture. Experience coding REST and SOAP services.
• Excellent communication (verbal and written) and interpersonal skills. Able to step into complex situations and take responsibility.
• Solid knowledge working with version control systems like bitbucket and build tools like maven.
• Strong problem solving and conflict resolution skills.

Preferred Skills:

• Able to guide junior developers.
• Ability to learn and master internal frameworks quickly.
• Deep knowledge in writing complex unit tests.
• XML and knowledge of generating Java data binding code from XSDs
• Knowledge of Tomcat, WebSphere, WebLogic and IBM MQ
• Experience with Agile methodology.

About CapitalCloud, A Bottomline Company:

Bottomline Technologies provides collaborative payment, invoice and document automation solutions to corporations, financial institutions and banks around the world. The company's solutions are used to streamline, automate, and manage processes involving payments, invoicing, global cash management, supply chain finance and transactional documents. Organizations trust these solutions to meet their needs for cost reduction, competitive differentiation, and optimization of working capital.

Serving industries such as financial services, insurance, health care, technology, communications, education, media, manufacturing, and government, Bottomline provides products and services to approximately 80 of the Fortune 100 companies and 70 of the FTSE (Financial Times) 100 companies.

Bottomline is a participating employer in the Employment Verification (E-Verify) program EOE/AA/M/F/V/D/E-Verify Employer

Bottomline Technologies is an Equal Employment Opportunity and Affirmative Action Employer.

• Min 5 years of hands-on experience in Java Spring-boot technologies
• Experience with monolithic applications
• Experience using Redis and RabbitMQ
• Experience with RDBMS such as SQLServer and My SQL
• Strong analytical, problem solving and data analysis
• Excellent communication, presentation and interpersonal skills are a must
• Micro service frameworks such as Java SpringBoot
• Design and implement automated unit and integration tests 

• 8+ years of relevant work experience
• Well-versed in data structures, algorithms, and software design. Programming experience with at least one of
• Java or Python and object-oriented design
• Knowledge on SQL, NoSQL databases, Messaging/Caching technologies and AW deployments is a plus
• Exposure to the architecture and design (design patterns, security, reliability and scaling) of new and current systems. Experience in building highly scalable business applications, which involve implementing large complex business flows involving multiple third-party integrations
• Prior startup experience is a plus