
- 2+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relationl Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
- 4+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.

About Recro
About
Recro is a developer-focused platform that was founded with the aim of seamlessly matching individual expertise with the right opportunities.
We empower talented developers by providing them with relevant experience at fast-growing startups based on technical competencies and aspirations. These opportunities have a significant impact on their career success and help them become their best self.
On the other hand, startups get instant access to top-quality developers with guaranteed productivity from the very beginning. We help them to scale up/down based on their needs, thus ensuring an efficient and high-yielding workforce.
Developers solve real-time complex problems and get exposure to the uplifting and challenging work culture at start-ups like Flipkart, Dunzo, Swiggy, and Zivame among many others. At Recro, we ensure continuous support from our strong community to accelerate careers for developers and strive to create optimal business outcomes for high-growth startups.
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We are looking for a Senior Java Developer with 5+ years of solid experience.
About You
- You have 6+ years of experience working on products or projects that have gone into production
- You can break down complex problems with elegant architectural solutions
- You love technology and have hacked with multiple languages and programming stacks and love to get your hands dirty by doing things
- We expect you to hit the ground running with your knowledge and skills. Being part of a team of smart people solving interesting problems means that you must think on your feet, apply your knowledge, and learn interesting technologies. It also means having fun.
Required Skills
- Java 8+
- Spring Framework / Spring Boot / Spring Security / Spring Data
- REST frameworks
- JPA
- ESB (Camel)
- Hystrix, Reactive programming (Spring Reactor, RxJava, etc.)
- Unit testing (JUnit, etc.)
- OpenId, Oauth2, SAML
- Maven, SBT
- SQL
- Shell scripting
- Containers and Container orchestrators (Kubernetes)
Optional Skills
- Scala
- Python
- Serverless development (AWS Lambda, Knative)
- Stream processing frameworks (Spark, Flink)
- Machine learning (Tensorflow, Pytorch, Spark, etc.)
- Workflow engines (Airflow, Camunda, etc.)
About Us
We offer CTO-as-a-service and Product Development for Startups. We value our employees and provide them an intellectually stimulating environment where everyone's ideas and contributions are valued.
What You will do
● Create beautiful software experiences for our clients using design thinking, lean and agile methodology.
● Work on world-class software products using the latest cutting edge technologies and platforms.
● Work in a dynamic, collaborative, transparent, non-hierarchical culture.
● Work in collaborative, fast-paced and value-driven teams to build innovative customer experiences for our clients.
● Help to grow the next generation of developers and have a positive impact on the industry.
Basic Qualifications
● Experience: 5+ years.
● Hands-on development experience in backend, Java, SprintBoot, Hibernate, SQL, MongoDB, Jenkins, Microservices etc...
● Server-side development experience mainly in JAVA.
● Passion for software engineering and follow the best coding concepts. ● Good to great problem solving and communication skills.
● Experience in working with cross-border, distributed teams is a must.
Nice to have Qualifications
● Product and customer-centric mindset.
● Great OO skills, including design patterns.
● Experience with large-scale enterprise systems
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Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 2 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
- Experience building a large scale social or location-based app.
• Hands on RDBMS experience with Oracle/ PostgreSQL/ MySQL/SQL
Server including transaction management, SQL programming, data
modelling, etc.
• Must have proven track record of logical data modeling and physical
data modeling
• Experienced in using ORM frameworks like Hibernate, etc.
• Basic understanding of NoSQL systems like Redis (Key-Value store),
MongoDB (Document store), Elasticsearch (Search / Document store)
• Design, Development & Deployment of Microservices using Spring
Boot or any other framework.
• Understanding of building EDA-based (Event Driven Architecture)
systems.
• Basic understanding of any public cloud (AWS, Azure, GCP)
• Ability to design & architect a system that exhibits basic
characteristics like modularity, configurability / extensibility, scalability
& availability.
• Maven / Gradle
• Experience in using & configuring Jenkins.
• Experience in using & configuring SonarQube.
Essential Requirements
• Hands-on with Java Platform (1.5 & above) having proficiency in OOPs
concepts, Collections,
• Generics, Streams, Multi-threading (Executor Framework), Functional
Programming.
• Design & Development of REST Web Services (Spring MVC / REST /
Jersey / Apache CXF, etc.)
• Hands-on experience using Spring framework (4.x & above)
• Core / Beans
• MVC / REST
• Security
• Spring Data / JPA
• Spring Test / JUnit
• JMS
IoT backend - * Good work experience in C#.Net, Asp.Net Web APIs, Microservices
* Good development work experience in Azure: AppServices, Functions, Authentication, Consuming and leveraging Azure SAAS services, IoT services, MQTT, IoT Hub, Working with schema less databases, Timeseries database, etc
* Good experience in MS SQL
# Good to have is some development experience in front-end technologies JavaScript, Angular, React, etc
Bachelor's or Master's degree in Computer Science, Information Systems,
or equivalent.
EXPERIENCE – 2 to 5 years
CTC - UPTO 5.4L P.A.
JOB DESCRIPTION
We are looking for a backend developer who will be responsible for designing,
implementing, and supporting a distributed blockchain-based network. Your primary
responsibility will be analysing requirements, designing Blockchain technology around
a certain business model, and the building and launching of a blockchain network. You
will be asked to work on various blockchain technologies like Ethereum (Layer 1 & 2,
i.e Binance Smart Chain ).
● Analytical, results-driven Back-end Developer who will work with team members
to troubleshoot and improve current back-end applications and processes.
Focused on building a better, more efficient program and creating a better
end-user experience.
● Work closely with Frontend developers to integrate new web features into
our application
● Strong understanding of the web development cycle and programming
techniques and tools.
● Strong communication and presentation skills
● Ability to work in a fast-paced environment.
SKILLSET
● Experience with Smart contract development tools
● Strong background in Javascript, Python & Node JS, SQL
● Build new features and products using modern backend tools (Node.js, Mongo,
SQL, GraphQL)
● Hands-on technical exposure in implementing Blockchain technologies
(Ethereum and Hyperledger Familiarity with Hyperledger Fabric and Solidity )
Understanding of Distributed Ledger technology, Blockchain ecosystem and
structure.
● Experience working in an Agile and DevOps environment.
● Knowledge on Mining, Hashing, Elliptic Curve Cryptography(ECC) and P2P
networking Extensive experience with progression of major projects from the
planning stage through to implementation and completion Effective
communicator to all stakeholders and management during project consulting
and analysis. Strong Software development background.
● Experience on Smart contract and Solidity, development tools for Ethereum
(testrpc, geth, Web3, eth_lightwallet, etc.
● Experience in writing smart contracts.
● Good understanding of NFTs and tokens.
● Experience in wallet integration like MetaMask and Coinbase Wallet.
Experience working with decentralized application protocols like DeFi..
Working knowledge of at least one of the Blockchain frameworks such
as Hyperledger Fabric, R3 Corda, Ethereum (Solidity).
● Experience working with large code-bases.
● Proficiency in one or more of the following languages: C++, Go, Solidity,
Rust, Node.js, React.js.
● Strong knowledge of Algorithms and Data Structures.
● Familiarity with Cryptography.
● Familiarity with P2P networks
● Strong knowledge of bitcoin-like blockchains.
● Strong knowledge of concurrency and writing efficient and safe multithreaded
code
● Familiarity with code versioning tools such as Git
Why you should join us
- You will join the mission to create positive impact on millions of peoples lives
- You get to work on the latest technologies in a culture which encourages experimentation - You get to work with super humans (Psst: Look up these super human1, super human2, super human3, super human4)
- You get to work in an accelerated learning environment
What you will do
- You will provide deep technical expertise to your team in building future ready systems.
- You will collaborate in a highly cross functional team, providing engineering perspective to non technical members of the team
- You will help develop a robust roadmap for ensuring engineering operational excellence
- You will establish clean and optimised coding standards that are well documented
- You will author efficient, reliable and performant systems
- You will design systems, frameworks and libraries that work at scale, are easy to maintain and provide a great developer experience
- You will be agile and curious about customer problems and business objectives
- You will actively mentor and participate in knowledge sharing forums
- You will work in an exciting startup environment where you can be ambitious and try new things :)
You should apply if
- You have a strong foundation in Computer Science concepts and programming fundamentals
- You have been working on backend web technologies since 8+ years
- You have built and maintained reliable systems that operate at high scale
- You’re experienced in building and running cloud-native platforms & distributed systems
- Extensive experience in any web stack (we use Typescript / AWS / DynamoDB / PostgreSQL)
- You understand the hustle of a startup and are good with handling ambiguity
- You are data driven, have customer empathy and enjoy building delightful applications
- You are curious, a quick learner and someone who loves to experiment
- You insist on highest standards of quality, maintainability and performance
- You work well in a team to enhance your impact
- 6+ years of experience working with MongoDB or other NoSQL databases.
- Maintain and configure MongoDB (developer)
- Keep clear documentation of the database setup and architecture.
- Backup and Disaster Recovery management.
- Adept with all the best practices and design patterns in MongoDB for designing document schemas.
- Good grasp of MongoDB’s aggregation framework.
- Ensure that the databases achieve maximum performance and availability.
- Design indexing strategies.
- Configure, monitor, and deploy replica sets.
- Should have experience with MongoDB Atlas.
- Should have minimum experience with development and performance tuning.
- Create roles and users and set their permissions.
- Excellent written, verbal communication skills and critical thinking skills












