Java Developer

Job Description:

Role: Senior Backend Developer

Mode of work: WFO

Supercharge Your Career as a Senior Backend Developer at Technoidentity!

Are you ready to solve people challenges that fuel business growth? At Technoidentity, we’re a Data+AI product engineering company building cutting-edge solutions in the FinTech domain for over 13 years—and we’re expanding globally. It’s the perfect time to join our team of tech innovators and leave your mark!

What’s in it for You?

We are looking for a highly motivated Senior Backend Developer with 4-6 years of experience to join our team. The ideal candidate will have strong backend development expertise, a deep understanding of distributed systems, and a high sense of ownership. This role requires working independently on POCs and projects while also mentoring junior team members and enabling scalable delivery.

What Will You Be Doing?

• Design, develop, and maintain scalable backend systems and services.
• Work independently on project implementations and backend solution development.
• Implement distributed architecture design patterns to build reliable and high-performance systems.
• Collaborate with cross-functional teams to deliver robust backend solutions.
• Guide and mentor junior developers, ensuring quality implementation and adherence to best practices.
• Participate in system design discussions, code reviews, and technical decision-making.
• Ensure high ownership in delivering solutions aligned with project timelines and goals.

What Makes You the Perfect Fit?

• 4-6 years of backend development experience with strong expertise in Java or Go,
• Hands-on exposure to distributed systems, and solid knowledge of PL/SQL, with the ability to work independently and take high ownership of deliverables.
• Strong problem-solving and critical thinking abilities.
• Experience working with distributed systems and architecture design patterns.
• Strong database development skills with PL/SQL.
• Excellent team coordination and collaboration skills.
• High sense of ownership, accountability, and commitment towards project delivery.
• Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related technical field is required.

Good to Have Skills

• Exposure to Cloud platforms (AWS or GCP).
• Understanding of Frontend technologies or DevOps practices.
• Experience with workflow orchestration tools such as Temporal or similar platforms.

Work Requirements:

• Willingness to work in US or flexible shift timings based on project requirements
• Ability to work independently on POCs/projects and help scale additional pods of work
• Guide and direct junior team members to ensure proper implementation

Position Overview:

We are seeking a Node.js Developer with 1-2 years of experience to join our team. The ideal candidate should have hands-on experience in backend development, a solid understanding of JavaScript, Express.js, and familiarity with databases. You will be responsible for developing and maintaining server-side applications, collaborating with front-end teams, and ensuring optimal performance.

Key Responsibilities:

• Backend Development: Build and maintain server-side applications using Node.js and Express.js.
• API Development: Design and implement RESTful APIs to support various functionalities.
• Database Management: Work with both SQL (MySQL, PostgreSQL) and NoSQL (MongoDB) databases.
• Code Quality & Testing: Write clean, reusable, and testable code while following best practices.
• Performance Optimization: Optimize applications for speed and scalability.
• Troubleshooting & Debugging: Identify and resolve application issues to ensure smooth operations.
• Security Implementation: Apply basic security measures to protect applications and data.
• Collaboration: Work closely with front-end developers to integrate UI components with backend logic.

Required Qualifications:

• 1-2 years of experience in Node.js backend development.
• Strong proficiency in JavaScript and ES6+ concepts.
• Hands-on experience with Express.js or similar frameworks.
• Familiarity with front-end technologies (HTML, CSS, React/Angular is a plus).
• Experience working with databases (MySQL, PostgreSQL, MongoDB).
• Basic understanding of asynchronous programming and event-driven architecture.
• Experience with Git for version control.
• Knowledge of basic cloud services (AWS, Azure, or GCP is a plus).
• Understanding of Docker and containerization is an advantage.
• Good problem-solving skills and willingness to learn.

Strong Senior Backend Engineer profiles

Mandatory (Experience 1) – Must have 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems

Mandatory (Experience 2) – Must have strong backend development experience using one or more frameworks (FastAPI / Django (Python), Spring (Java), Express (Node.js).

Mandatory (Experience 3) – Must have deep understanding of relevant libraries, tools, and best practices within the chosen backend framework

Mandatory (Experience 4) – Must have strong experience with databases, including SQL and NoSQL, along with efficient data modeling and performance optimization

Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs, services, and backend systems, including system design and clean code practices

Mandatory (Domain) – Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)

Mandatory (Company) – Must have worked in product companies / startups, preferably Series A to Series D

Mandatory (Education) – Candidates from Tier - 1 engineering institutes (IITs, BITS, are highly preferred)

Develop, record and maintain cutting edge web-based J2EE, JAVA applications.

Experience on Java Spring Framework is required.

Experience on Hibernate is required.

Experience on REST Services is required.

Object-oriented programming, design, and patterns.

Strong proficiency with:Relational database concepts and data modeling.

Good communication skills to interact with customer, understand their requirement, effectively record the requirement and implement the same. 

Job Title: Senior Software EngineerLocationExperienceJob DescriptionWe are seeking a Senior Software Engineer to join our dynamic engineering team, focusing on designing, developing, and optimizing large-scale ad technology systems. This role requires expertise in building high-performance, distributed systems capable of handling millions of transactions per minute. You will work closely with cross-functional teams to enhance the scalability, robustness, and performance of our real-time bidding systems.

• ResponsibilitiesDesign and implement high-performance microservices to handle large volumes of real-time data requests.
• Collaborate with the AdExchange team to optimize real-time ad buying, selling, and auctioning processes.
• Lead the development and enhancement of key features such as loss notifications and bidder engagement strategies.
• Build A/B testing mechanisms to optimize bidder responses and URL accuracy.
• Improve the scalability and reliability of critical services, utilizing advanced monitoring tools like Prometheus and Kafka.
• Conduct code reviews, create design documents, and mentor junior engineers.
• Manage end-to-end project lifecycles, from architecture design to deployment in production environments.
• Required SkillsProficiency in Java, Docker, Aerospike, Kafka, and MySQL.
• Strong understanding of distributed systems, microservices, and real-time bidding technologies.
• Experience in optimizing system performance to handle high-throughput, low-latency requirements (600,000+ requests/min).
• Expertise in monitoring and logging tools such as Prometheus, Grafana, and log management systems.
• Knowledge of cloud technologies (AWS or similar).
• Strong problem-solving skills and experience in A/B testing for optimizing system components.
• Preferred SkillsExperience in ad technology or large-scale data processing systems.
• Familiarity with JavaScript, REST APIs, and integration workflows.
• Hands-on experience with Kubernetes and event-driven architectures.

Job Title: Java Developer

Java Developer – Job Description 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 to 14 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 clientfacing 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.

www.opcito.com

Job Description:

We are seeking a dedicated Golang Developer with 2+ years of experience to join our growing company. You will collaborate with other technical staff to deliver and maintain a fully functional software implementation. We hope you can put your passion for software engineering to work to create highly immersive user applications.

Required Skills:

• 2 - 7 years of Industry experience in the relevant domain.

• Good working knowledge of distributed systems and de-coupled architecture.

• Working knowledge of Container technologies: Kubernetes (preferred), Docker, etc.

• Working knowledge of VMware VCenter, VMware ESXi and VM management.

• Self-motivated, with ability and interest in learning new technologies and adapting quickly to new requirements.

• Good team player with a great attitude to learn.

• Ability to iterate fast in an agile environment.

• Strong analytical and problem-solving skills.

• Strong interpersonal skills - must be able to work effectively as part of a project/ program team and foster team cooperation.

• Must be able to effectively communicate technical information to both technical and non-technical personnel

Responsibilities:

• Design and Development of NSX-ALB's Upgrade and Gslb Infrastructure projects by adhering to the cloud and distributed networks' native design principles.

• Develop software for scale that would be deployed at different types of cloud infrastructures.

• Take ownership of your design and development activity by resolving bugs found in unit testing, system testing and customer deployments.

• Develop multi-cluster/multi-cloud workflows and define industry roadmaps for adoption.

• Develop low latency and high-performance solutions with fully automated test suites.

• Code in Golang for most of your day with a working knowledge of Python.

• Adaptability and multi-language proficiency (shell, Python, Golang)

Why should you join Opcito?

We are a dynamic company that believes in designing transformation solutions for our customers with our ability to unify quality, reliability, and cost-effectiveness at any scale. Our core work culture focuses on adding material value to client products by leveraging best practices in DevOps like continuous integration, continuous delivery, and automation, coupled with disruptive technologies like cloud, containers, serverless computing, and microservice-based architectures.

Here are some of the perks of working with Opcito:

• Outstanding career development and learning opportunities
• Competitive compensation depending on experience and skill
• Friendly team and enjoyable work environment
• Flexible working schedule (Hybrid Work Model: 3 days WFO and 2 days WFH)
• Corporate and social events.

What you need to have:

Job Description:
Requirements:

• BS in Computer Science, Computer Engineering, Electrical Engineering, Mathematics or a closely related computer technical field with 3+ years experience programming with at least one of the following languages:Java, C++, C#, Python, Go, or Perl;

OR 

• MS in Computer Science, Computer Engineering, Electrical Engineering, Mathematics or a closely related computer technical field 2+ years experience programming with at least one of the following languages: Java, C++, C#, Python, Go, or Perl.

ALSO 

• Minimum 3 years of experience building applications using at least one of the following: web application technologies including: HTML, CSS, or Javascript; OR Databases, for example: Mysql, Mongo, ora similar program; OR a collection of systems connected and communicating via a network connection
• Minimum 1 year of experience mentoring more junior Engineers
• Significant experience with large scale, high-performance systems