• Code, develop, design and architect features related to the existing application. We
expect you to own modules end to end and take pride in the work products you
ship.
• Lead from the front, when it comes to delivering high quality work products. Serve
as a mentor to the team members
• Create and define performance metrics. Ideate, innovate and hack through the
existing systems to improve performance.
• Perform code reviews, set coding practices and guidelines within the team.
• Make sense of the product specs, be nimble in getting the issues resolved. Be a
thought leader.
Critical Functional Skills:
• Solid understanding and knowledge of Java/C/C++. You should understand the
concepts of multithreading, I/O, messaging, instrumentation etc and their
implementation in Java/Any other Object-Oriented Language.
• Proficiency in the implementation of algorithms and the use of advanced data
structures to solve problems in computing. A solid foundation in the principles of
computer science is desired.
• Ability to write clean, modular, and loosely coupled code by the use of design
patterns.
• He/She should be able to break down and architect complex software systems. For
example- Build
• Cars Availability Engine for Ola.
• Strong decision-making ability
• Deep expertise in at least one programming language & tech stack.
• Substantial experience in building complex and scalable solutions.
• Strong object-oriented design skills, ability to apply design patterns, and an uncanny
ability to design intuitive module and class-level interfaces
• The ability to do deep problem solving and build elegant, maintainable solutions to
complex problems.
• Experience leading multi-engineer projects and mentoring junior engineers
• Experience with full life cycle development in any programming language on a Linux
platform
• Comprehensive operational experience including, optimizations, deployments and
tuning servers like apache/mysql/tomcat/solr
• Prior experience in working with Agile software methodologies (XP, Scrum), TDD,
and Continuous Integration(CI/CD) a plus.
• Experience in building data-driven web application design and development is a plus
• Expert level experience in building a scalable, large and complex business
application.
Experience Required:
• Typically with an experience of 5+ years of development experience in a product
firm.
• Must have lead, designed, architected and delivered at least 1 project in his previous
assignments independently.
Minimum Qualifications Required:
• Btech/MS from a reputed Institute
• Deep expertise with any or combination programming languages: Java, C++, C#,
Ruby, Scala,
• Go any object-oriented high-level proprietary or open-source language with strong
programming constructs. We are not skill-specific but go by strength in
competencies
• Machine coding
• Single machine in-memory program
• Need a working code with functionality
• Readable and well-designed code with right abstractions, separation of concerns,
• right design patterns
• Performant code with concurrency and efficient data structures
• Write test cases covering the happy path and edge cases
• Problem Solving
• Choose the right combination of data structures to solve the problem
• Identify most edge cases for the problem

About Olacabs.com
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Similar jobs (10)
JobTitle : Mission Control Software Engineer – Java Backend
Experience : 4+ Years
Location : Bengaluru, Karnataka (On-site)
Employment Type : Full-time
Industry : Space Technology
🧠 Role Overview :
As a Mission Control Software Engineer – Java Backend, you will be a founding member of the Mission Control Software team. You will design and develop the backend core of a distributed, high-reliability system responsible for streaming, processing, and routing satellite data.
This role offers high ownership and the opportunity to directly influence system architecture as it evolves from a single-node deployment to a scalable multi-node system.
🛠️ Tech Stack :
Java 11+, gRPC, REST APIs, PostgreSQL, Docker, Linux, WebSockets, Git, CI/CD
⚙️ Key Responsibilities :
- Design, develop, and maintain backend services in Java (11+) for data ingestion, processing, and control workflows
- Build and enhance gRPC and REST APIs for internal and external system integrations
- Develop modular plugins and middleware for routing, persistence, and automation
- Work with PostgreSQL and other databases for structured and time-series data
- Collaborate with frontend teams to support real-time dashboards via WebSockets/event streaming
- Ensure system scalability, reliability, and observability through logging, metrics, and testing
- Contribute to containerized deployments (Docker) and CI/CD pipelines
- Write clean, maintainable, and well-documented code with strong test coverage
🧩 Required Skills & Experience :
- 4+ years of experience in backend or distributed systems development.
- Strong proficiency in Java (11+), including concurrency and networking concepts.
- Experience with frameworks like Spring Boot, Vert.x, or similar.
- Hands-on experience with gRPC and REST API design.
- Strong knowledge of SQL databases (PostgreSQL preferred) and schema design.
- Experience working in Linux environments, with Git and Docker.
- Familiarity with event-driven systems / messaging queues (Kafka, RabbitMQ, MQTT, etc.).
- Ability to design scalable architectures and write automated tests.
⭐ Good to Have :
- Experience with real-time systems, telemetry, IoT, or satellite systems
- Exposure to distributed systems / microservices / high-availability architectures
- Working knowledge of Python for scripting or integrations
- Experience with monitoring tools like Prometheus and Grafana
- Interest in hardware-software integrated systems
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)
Wissen Technology is now hiring for a Java Developer
Location : Bangalore (The candidate must be based in Bangalore, as an in-person interview is a mandatory part of the selection process)
Notice Period: Immediate to Serving Notice Period & Up to 30 Days max
Skills: Hands-on experience in Core Java, Spring Boot, Microservices, Algorithms, Data Structure and SQL
Note: Bachelor's or Master's degree from a top-tier college or university is must.
Key Responsibilities:
- Design, develop, and test low-latency, high-volume client-facing applications.
- Develop and maintain enterprise-scale, n-tier applications for the investment banking/capital markets domain.
- Implement microservices-based solutions using Spring Boot and other modern frameworks.
- Work extensively with Core Java 5.0 and above, Spring Framework, and CXF
- Optimize applications for multi-threading and high-performance server-side development
- Collaborate with cross-functional teams to design and implement scalable, secure, and efficient solutions
- Work with RDBMS (preferably Sybase) to handle large-scale data processing.
- Develop and maintain applications on Unix/Linux environments
- Utilize enterprise application design patterns to build robust and scalable solutions.
- Troubleshoot and resolve complex technical issues while ensuring application stability and performance.
Required Skills & Experience:
- 1 to 6 years of hands-on experience in Java development
- Strong knowledge of microservices architecture and cloud-based deployment.
- Expertise in Spring Framework, Spring Boot, and CXF
- Experience in developing and optimizing applications for high-volume, multi-threaded environments
- Solid understanding of financial domain applications, sales, and trading platforms
- Proficiency in working with relational databases (Sybase preferred)
- Familiarity with Unix/Linux environments and shell scripting.
- Strong analytical, problem-solving, and communication skills.
- Ability to articulate and present design ideas effectively.
- Education: Bachelor's or Master's degree from a top-tier college or university is must.
Location: Hyderabad
Work Mode: Hybrid (2 days WFO)
Experience Required: 4.5+ years
Notice Period: Immediate Joiners Preferred
Employment Type: Full-Time
Mandatory Requirements:
- 4.5+ years of experience in Java Development
- Hands-on experience with AWS in a production environment
- Must be available to join immediately
- Must be willing to work in Hybrid mode from Hyderabad
Technical Skill Requirements:
- Strong hands-on experience in Core Java, Spring Boot, and Microservices
- Solid understanding of OOP concepts, Multithreading, and REST APIs
- Practical knowledge and experience working with AWS services like EC2, Lambda, S3, RDS, SNS, etc.
- Familiarity with CI/CD tools and version control systems (Git)
- Good knowledge of SQL and NoSQL databases
- Ability to write clean, efficient, and well-documented code
Key Responsibilities:
- Design, develop, and maintain scalable Java-based backend applications
- Implement and integrate AWS services to ensure scalability and reliability
- Collaborate with cross-functional teams including QA, DevOps, and Front-end developers
- Optimize application performance and troubleshoot issues in a timely manner
- Participate in code reviews, sprint planning, and team discussions
- Ensure best practices in code quality, security, and documentation
- Handle deployments and production support if needed
Software Engineer for Java
- Understanding of object-oriented programming and design patterns
- Strong with Java programming and Java Servlets.
- Proficient in API design and development using RESTful services (JSON, XML etc)
- Source code management using GIT
- Knowledge in Mongo DB and SQL or any equivalent No-SQL and Relational databases.
- Experience working with Bootstrap, JavaScript, jQuery & HTML would be preferred.
- Experience in Node JS would be an added advantage.
Minimum 2 years of experience in the software development, including Project Management and
interactions with customers
• Solid understanding of the full software development life cycle
• Working Experience of
a) Ubuntu 18.04.4 LTS
b) Java 1.8
c) Tomcat 9
d) Spring boot framework 2.2.2. RELEASE
e) Spring OAuth2 2.4.0. RELEASE
f) Spring Security JWT 1.1.0.RELEASE
g) Spring Log4j2
h) Hibernate 3.13.3
i) Nginx 1.14.0
j) Hikari Connection Pool
k) Mariaj Connector
l) Google Recaptcha
m) Redis client 3.3.0
Qualification
Your Opportunity
- Own and drive business features into tech requirements
- Design & develop large scale real time server side systems
- Quickly create quality prototypes
- Staying updated on emerging technologies
- Ensuring that all deliverables adhere to our world class standards
- Promote coding best practices
- Mentor and develop junior developers in the team
Required Experience:
- 4+ years of relevant experience as described below
- Excellent grasp of Core Java, Multi Threading and OO design patterns
- Experience with Scala, functional, reactive programming and Akka/Play is a plus
- Excellent understanding of data structures and algorithms
- Solid grasp of large scale distributed real time systems
- Prior experience on building a scalable and resilient micro service
- Solid understanding of relational databases, NoSQL databases and Caching systems
- Good understanding of Big Data technologies such as Spark, Hadoop is a plus
- Experience on one of AWS, Azure or GCP
Who you are :
- You have excellent and effective communication and collaborative skills
- You love problem solving
- You stay up to date with the latest technologies and then apply them in real life
- You love paying attention to detail
- You thrive in meeting tight deadlines and prioritising workloads
- Ability to collaborate across multiple functions
Education:
Bachelor’s degree in Engineering or equivalent experience within the field
We are looking for passionate and self-driven Software Engineers to join our Bangalore engineering center. You would be responsible for designing and developing world-class and truly differentiated software products in the online travel space.
Primary Responsibilities:
- Development & maintenance of Cleartrip’s product lines
- Involved in entire lifecycle including analysis, development, fixing, and monitoring of issues on the assigned Cleartrip product lines
- Unit test cases – Review and writing
- 2+ years of Product Development experience
- Java, Spring Framework preferred
- Solid experience with databases (Oracle/MySQL) – a must
- Excellent OO and design skills
- Experience with Test Driven Development within a continuous Integration environment (Lunt, CruiseControl, etc)
- BE/B.Tech Computer Science Personality Traits/Attributes:
- Excellent communication skills
- Excellent interpersonal skills – team player & desires to works closely with teammates, QA & product teams
- Problem-solving skills – Ability to research, analyze & find solutions independently.
Software engineering takes the central roles for building products and systems. You will be responsible for designing, building, improving, or maintaining our web applications, third-party data integration, data API, backend systems, or working with monitoring tools and infrastructure may work on our search engine including scoring and relevance, reservation engine, automated pricing engine, business process engine, data applications, devops-related applications, and other
new projects.
You will work in cross-functional teams and meet great people regularly from top tier technology, consulting, product, or academic background. We work in open environment where there are no boundaries or power distance. Everyone is encouraged to speak their mind, propose ideas, influence others, and continuously grow themselves. Get the exposure to multi-aspect, collaborative, intensive startup experience with our recent expansion into Southeast Asia and exploration of new product
Qualifications
Having minimal 3 years of experience in software engineering, application development, or system development
Excellent understanding of software engineering concepts, design patterns, and algorithms
Comfortable working up and down the technology stack
Curiosity to explore creative solutions and try new things
Bachelors' degree in Computer Science or equivalent from a reputable university











