Java Backend Developer

This Is NOT a Typical Java Role If your experience is mostly CRUD APIs, controller wiring, or shallow service layers — this role is not for you. We are looking for a top tier backend engineer who thrives on: 

* Designing complex algorithms 

* Building high-performance, memory-efficient systems 

* Owning deep backend logic that actually moves the needle 

You will work close to the core engine of the product, not the edges.

What You’ll Be Trusted With 

* Architect and build backend systems that must perform under load 

* Design and implement custom algorithms for real-world, non-trivial problems 

* Solve performance bottlenecks involving CPU, memory, I/O, and concurrency 

* Build backend services where latency, throughput, and correctness matter 

* Own document & PDF processing pipelines end-to-end:     

-Composition     

-Rendering     

-Optimization     

- High-volume generation 

* Make hard technical decisions and stand by them

Non-Negotiable Skills 

* Exceptional Java expertise (Core Java, Spring Boot, Java 8+) 

* Strong command over:     

• Data structures & algorithms 
• Multithreading & concurrency models     
• JVM internals & memory management 

* Proven experience building custom algorithms (this will be evaluated) 

* Deep backend engineering experience with Spring / Spring Boot 

* Strong understanding of:     

• API design principles     
• Fault tolerance & resilience     
•  Performance tuning & profiling 

* Ability to reason about time complexity, space complexity, and trade-offs 

* Strong database fundamentals (query optimization, indexing, transactions) 

* Experience with message brokers (ActiveMQ, Kafka, RabbitMQ) 

* Exposure to Kubernetes-based deployments or large-scale microservices 

Interview Focus (Be Prepared) 

* Algorithm design & problem solving 

* Deep Java fundamentals 

* System design discussions (backend-heavy) 

* Performance tuning scenarios 

* Real-world debugging and optimization challenges

Job Title: Java Developer

Location: Chennai

Experience: 3+ Years

Employment Type: Full-time

Job Description:

We are looking for a skilled and passionate Java Developer with a strong foundation in Core Java and Object-Oriented Programming concepts. The ideal candidate should possess excellent communication skills and have hands-on experience with multi-threading, collections, databases, and backend development frameworks like Spring and Spring Boot. Exposure to cloud platforms and frontend technologies is a plus.

Key Responsibilities:

• Design, develop, and maintain scalable Java applications using Core Java and Spring Boot.
• Apply strong knowledge of Java Collections Framework and concurrent programming techniques including ExecutorService, ForkJoinPool, and other threading mechanisms.
• Optimize JVM performance and memory usage.
• Participate in all phases of the software development lifecycle: requirement gathering, design, development, testing, and deployment.
• Write clean, maintainable code following best practices, coding standards, and design patterns.
• Conduct code reviews, unit testing, and participate in peer programming.
• Collaborate effectively with team members and stakeholders to deliver high-quality solutions.
• Interact with databases like Oracle, Sybase, or SQL Server, with a strong understanding of views, triggers, indexing, and stored procedures.

Must-Have Skills:

• 3+ years of hands-on experience in Core Java
• Strong understanding of Collections, Multithreading, and Concurrency
• Proficient in Spring Framework, especially Spring Boot
• Deep understanding of Object-Oriented Design and Data Structures
• Strong experience in RDBMS (Sybase/Oracle/SQL Server) including indexing, replication, CLOB/BLOB types, views, and procedures
• Excellent written and verbal communication skills

Good to Have:

• Exposure to Microservices architecture
• Familiarity with NoSQL databases
• Knowledge or willingness to work on frontend technologies
• Experience working with public cloud platforms (AWS, Azure, GCP)

Soft Skills:

• Strong analytical and problem-solving skills
• Team player with a proactive attitude
• Ability to work independently and in a fast-paced environment

If you are passionate about Java development and want to work on cutting-edge technologies in a collaborative environment, we would love to hear from you.

Let me know if you want this converted into a company-branded format or with CTC/NP details added.

Key Responsibilities:

• Design, develop, and maintain robust and scalable backend applications using Core Java and Spring Boot.
• Build and manage microservices-based architectures and ensure smooth inter-service communication.
• Integrate and manage real-time data streaming using Apache Kafka.
• Write clean, maintainable, and efficient code following best practices.
• Collaborate with cross-functional teams including QA, DevOps, and product management.
• Participate in code reviews and provide constructive feedback.
• Troubleshoot, debug, and optimize applications for performance and scalability.

Required Skills:

• Strong knowledge of Core Java (Java 8 or above).
• Hands-on experience with Spring Boot and the Spring ecosystem (Spring MVC, Spring Data, Spring Security).
• Experience in designing and developing RESTful APIs.
• Solid understanding of Microservices architecture and related patterns.
• Practical experience with Apache Kafka for real-time data processing.
• Familiarity with SQL/NoSQL databases such as MySQL, PostgreSQL, or MongoDB.
• Good understanding of CI/CD tools and practices.
• Knowledge of containerization tools like Docker is a plus.
• Strong problem-solving skills and attention to detail.

We are looking for a focussed, energetic and motivated Senior Java Developer. You must have sufficient experience in Java Development, Spring, Spring Boot, AWS and SQS, S3. You will be challenged with complex and robust product development.

As a Senior Java Developer, you will be the most senior developer within the company working alongside other Java Developers, the Engineering Manager, and the CTO.

Senior Java Developer requirements

Solid development experience using Java, Springboot, SQS, S3 and Microservices

Experience working in Swing Java framework

Revises, updates, refactors, and debugs code

Write clear, concise and efficient code and ensure it is fully tested

Service and develop features using Java with AWS, JUnit, SQL and Spring framework

You have a good knowledge of Cloud technologies (ideally AWS)

Participate in peer coding reviews and work in a collaborative, agile environment

Demonstrate technical knowledge and expertise with a clear understanding on the products' technical composition

Senior Java Developer responsibilities

7-9 yrs minimum work experience

Excellent analytical, troubleshooting, and communication skills

Excellent attention to detail and time-management skills

Serves as an expert on developed applications

Ability to adapt and learn new product/technology is key

Collaborates with internal teams to produce software design and architecture

Knowledge of Agile frameworks (i.e. Scrum) and has worked with Jira or Spira

Attend daily stand-up meetings alongside the Scrum Master

A self-starter, hardworking and committed individual

Work UK hours - ideally 9.00am - 6pm with the expectation to work out of ours when needed

Software Development Engineer II

Do you want to be part of team building Amazon.in space ? Are you passionate to build highly scalable systems ?
LocalFinds team is building multiple capabilities that are relevant to customers in India. This is a rare opportunity to be part of a team that will be responsible for building a successful, sustainable and strategic business for Amazon.in

As an engineer, you will help with the , implementation, and launch of many key product features. You will get an opportunity to work on the wide range of technologies (including AWS Elastic Search, Lambda, ECS, EDP, SQS, Dynamo DB, Slapshot, Herd, Horizonte etc.) and apply new technologies for solving customer problems. You will have an influence on defining product features, drive operational excellence, and spearhead the best practices that enable a quality product. You will get to work with highly skilled and motivated engineers who are already contributing to building high-scale and high-available systems.

If you are looking for an opportunity to work on world-leading technologies and would like to build creative technology solutions that positively impact hundreds of millions of customers, and relish large ownership and diverse technologies, join our team today!

As an engineer you will be responsible for:
• Ownership of product/feature -to- for all phases from the development to the production.
• Ensuring the developed features are scalable and highly available with no quality concerns.
• Work closely with senior engineers for refining the and implementation.
• Management and execution against project plans and delivery commitments.
• Assist directly and indirectly in the continual hiring and development of technical talent.
• Create and execute appropriate quality plans, project plans, test strategies and processes for development activities in concert with business and project management efforts.
• Contribute intellectual property through patents.

The ideal candidate is a passionate engineer about delivering experiences that delight customers and creating solutions that are robust. He/she should be able to commit and own the deliveries -to-.

Tech_SDE

Main Street is hiring a Full Stack Engineer who will help design our technical architecture and build solutions that help business owners become entrepreneurs. Apply if you are excited about creating a platform for true entrepreneurship. 

As an early hire on the core team, you’ll work on shaping projects, big and small, over short three week sprints. We’re a small team, but we get a lot of features shipped. You would be responsible for driving full-stack projects from prototype to finished stage with a lot of autonomy and creativity. This is an exciting time to join the team. We've found solid early traction, have strong basic foundations and are pushing aggressively into some incredible new feature builds. We have a small team, so you can make an incredible impact on our product very quickly. 

Responsibilities:

• Own the design of the overall architecture of the web application
• Implement a robust set of services and effective APIs to power the web application
• Build reusable and manageable code and libraries for future use
• Optimize the application for maximum speed and scalability
• Translate UI/UX wireframes to visual elements
• Develop and handle well-functioning databases and applications
• Test software to ensure responsiveness and efficiency 
• Troubleshoot, debug and upgrade software

Experience:

• Proven expertise in shipping features in Ruby on Rails. Strong background in Ruby on Rails, HTML, CSS and JavaScript
• Strong experience in driving thought leadership and technical architecture
• Experience with mentoring juniors in the team

You are a fit if :

• You are a skilled coder. We need candidates with a strong history of shipping features in Rails with clean maintainable code. 
• You are a good communicator and a really good writer. Since we are async and remote most of our work is written. You'll need to be able to proactively communicate in concise, clear, simple writing.
• You are an expert project manager. You need to be able to break down a large, complex business deliverable into executable pieces that can be managed as individual user stories. You need to be able to keep a project on track, and cut scope when needed.
• You don't need babysitting and are a Manager of One. We love people who have started companies or have freelanced in the past. You take ownership and take things across the finish line. Especially in our remote async approach, you'll need to be intrinsically motivated and keep your  projects on track.
• You have strong business and product acumen. This job isn't just writing code, we solve real business problems for real people. That means you need to be able to look beyond the user story, have empathy for our end users and solve real problems for them.

About Main Street:

We're solving a problem that 62% of Americans have

62% of Americans last year thought about starting a business. The #1 reason they didn’t was because they didn’t know where to start. Currents options are:

1. Going independent which is risky: no support or direction
2. Paying a franchise which is expensive:  franchises charge $100K+ fees to get started, take 10% of topline revenue, don't provide marketing support or technology

The market we're going after is bigger than e-Commerce

We’re disrupting the $2.3T franchise industry by removing the franchise fee and offering a tech-enabled franchise like product.

We’re starting with home painting where our biggest competitor is https://certapro.com/">CertaPro a $550M revenue franchise (1% market share) before quickly taking on https://www.neighborlybrands.com/our-brands/">Neighborly Brands as we expand categories (pest control, lawn care, etc.).

As we expand categories, our customer does not change

Our customer is an aspiring business owner, like https://www.linkedin.com/in/nicklaforest">Nick or https://www.linkedin.com/in/hardin-h-hawes-9ba6a72/">Hardin who doesn't care what type of business they start, as long as it is profitable. Our customers are not actually the one painting houses or completing roofing jobs, rather they are the one that hires people to do the job. Our customer has years of experience in sales and general management, which makes them suitable for any type of business — which is why as we expand to 100 categories, our customer does not change.

Our solution is an end to end platform to help you start, grow and run a business

Main Street is a combination of well known technology platforms that provides an Uber like simple experience to starting a business

• https://stripe.com/atlas">Stripe Atlas: Helping you incorporate and set up legal logistics for your business
• https://www.duolingo.com/">Duolingo: Learn a new skill (in our case it is about a specific type of a business)
• https://www.shopify.com/online/ecommerce-solutions">Shopify: The operating tools to run your business
• https://www.womply.com/">Womply: A marketing stack to drive you customer

Take a look Main Street's Product walk through https://www.youtube.com/watch?v=teajumhL5DI&;feature=emb_title">here.

We're backed by top investors and built a world class team

We're a seed-stage startup and have raised $10M+ from top investors including Greylock and Khosla. Our team previously worked at places like DoorDash, OpenDoor, Amazon and OYO.

Intro

We are looking for an Software Engineer (SDE1) to join our team and drive the technology growth of our pay later platform. At Rely, we want passionate and talented individuals that want a challenge building the next generation payment products for Millennials across Asia. Together we will build the best products using amazing technology.

What will you do

• Design and implement business critical, high performance large scale services.
• Translate business requirements into scalable and extensible design.
• Coordinate with cross functional teams (Data, UX, QA etc.) on planning and execution.
• Continuously improve code quality, product execution and customer delight.
• Proactively manage stakeholder communication related to deliverables, risks, changes and dependencies.
• Building and managing automated build/test/deployment environments.
• Work with team members on functional and nonfunctional requirements and spread goals across the team.
  
  

What will you need

• 2+ years of hands-on experience with python and a backend framework (ideally django)
• 1+ years Hands-on experience working with Javascript and JS frameworks (Angular, React)
• Hands-on experience in designing, developing, testing and deploying applications large scale applications in any language or stack
• Experience working with high scale distributed systems.
• Practical knowledge of scalable software design.
• Good working knowledge of AWS
• Proficient with APIs, web protocols, OAuth, git.
• Ability to understand and implement Continuous Integration and Continuous Delivery.
• Well versed with Lean methodologies, TDD and Test Engineering and Automation.
• Ability to design and implement low latency RESTful services.
• Willingness to learn new languages and methodologies.

What would be a bonus

• Experience in production environments with large data sets
• Experience in scaling systems to millions of users.
• Work experience in a fast-growth startup
• Experience in DevOps tools but not limited to Docker, Kubernetes
• Experience in Gunicorn and Nginx