
Job Title: Lead Java Developer
Experience Required: 7+ Years
Location: Mumbai
About the Role
We are seeking a highly skilled Senior Backend Developer with deep expertise in building scalable, high-performance applications. The ideal candidate will have strong hands-on experience with Java, Spring Boot, Microservices, and distributed systems. You will play a key role in designing and optimizing APIs, architecting robust systems, and collaborating with cross-functional teams to deliver innovative solutions.
Key Responsibilities
- Design, develop, and maintain scalable backend systems using Java, Spring Boot, and Microservices architecture.
- Build and optimize APIs for large-scale applications ensuring high performance and reliability.
- Apply clean coding principles, SOLID design patterns, and clean architecture to deliver maintainable and robust code.
- Work with distributed systems technologies (Kafka, ELK, in-memory databases, Cassandra, or similar).
- Write efficient SQL queries and integrate with relational and NoSQL databases.
- Collaborate with product managers, architects, and other developers to define and align on technical decisions.
- Identify and solve complex problems with innovative and scalable solutions.
- Drive best practices in coding standards, system design, and performance optimization.
- Communicate complex technical concepts clearly across teams and stakeholders.
Skills & Qualifications
- 7+ years of experience as a Backend Developer.
- Strong expertise in Java, Spring Boot, Microservices, SQL.
- Significant experience in API design and optimization for enterprise-scale applications.
- Proficiency in distributed systems & related technologies (Kafka, ELK, in-memory DBs, Cassandra, etc.).
- Strong understanding of object-oriented engineering principles (SOLID, clean architecture).
- Excellent problem-solving and analytical skills with the ability to simplify complex concepts.
- Strong communication and collaboration skills, with the ability to influence and align teams.

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Required Qualifications & Skills:
- Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
- Minimum of 5+ years of professional experience in backend software development, with a strong focus on systems using . NET Framework /. NET Core (C#).
- Proven, significant experience in backend software development using the . NET framework /. NET Core (C#, ASP. NET Web API, Entity Framework).
- Expert-level proficiency in T-SQL, including writing and optimizing complex queries, stored procedures, functions, and understanding database design principles (preferably with MS SQL Server).
- Demonstrated ability to read, understand, and analyze complex legacy code to determine functionality and troubleshoot issues effectively.
- Strong analytical and problem-solving skills, with experience in debugging and resolving production system issues.
- Experience in leading technical initiatives or mentoring junior engineers.
- Formal team lead experience is a strong plus, if for Lead level role.
- Solid understanding of software development lifecycle (SDLC), APIs, and backend architecture patterns.
- Excellent communication and interpersonal skills.
Responsibilities:
- Lead and Mentor: Guide, manage, and mentor a backend engineering team of approximately 4 members, fostering a collaborative and high-performing environment.
- Backend Development: Architect, design, develop, test, and deploy scalable and maintainable backend services, APIs, and database solutions using. NET (C#) and T-SQL.
- Enhancement Ownership: Take ownership of technical design and implementation for new features and enhancements requested for our POS and web platforms.
- Legacy System Expertise: Dive into existing codebases (.NET and T-SQL) to thoroughly understand current system functionality, data flows, and business logic, becoming a subject matter expert.
- Production Support: Act as a key escalation point for diagnosing and resolving complex production issues related to the backend systems. Perform root cause analysis and implement effective solutions.
- Technical Guidance: Provide technical direction, conduct code reviews, establish and enforce coding standards and best practices within the team.
- System Knowledge & Communication: Clearly articulate how backend systems work and answer technical questions from team members and other stakeholders.
- Collaboration: Work closely with front-end developers, QA testers, product managers, and potentially clients to deliver integrated solutions
AccioJob is conducting a Walk-In Hiring Drive with HummingBird Technologies for the position of Java Backend Developer.
To apply, register and select your slot here: https://go.acciojob.com/wNrG3R
Required Skills: DSA, OOPs, SQL, Rest API
Eligibility:
- Degree: BTech./BE, MTech./ME, BCA, MCA, BSc., MSc
- Branch: Computer Science/CSE/Other CS related branch, Electrical/Other electrical related branches, IT
- Graduation Year: 2026
Work Details:
- Work Location: Pune (Onsite)
- CTC: 9 LPA
Evaluation Process:
Round 1: Offline Assessment at AccioJob Pune Centre
Further Rounds (for shortlisted candidates only):
- Profile Evaluation, Technical Interview 1
- Technical Interview 2
- HR Discussion
Important Note: Bring your laptop & earphones for the test.
Register here: https://go.acciojob.com/wNrG3R
Looking for candidates only with tier 1 colleges OR have experience in a product-based company.
Desired Skills :
● Experience with data modeling and SQL/NoSQL databases
● Experience with distributed systems and microservices
● Good experience in working with any of Java/SpringBoot, GoLang or NodeJS
● Excellent problem solving and debugging skills
● Passionate about the experience of software engineering as much as the output
● A strong sense of ownership
● Ability to communicate your ideas and approach to solving problems with clarity
About the Company:
We are a Series A funded Indonesian online group buying platform that helps people connect with like minded people who want to buy the same item/product at a discounted price. The team is spread across India and Indonesia, and is led by experienced founders who have founded, set-up, scaled and exited businesses across India and Indonesia. We have raised our first round of funding, and are growing extremely fast. We are actively looking for Full Stack developers to join our team.
Job Duties and Responsibilities
We are looking for an experienced full-stack engineer to implement both back-end and front-end software solutions to serve both internal and external customers. The position entails working in an agile team to develop Java- and React-based projects that support our system.
- Design, implement and test full-stack solutions using Java, Spring and React
- Design robust spring system that can support 2-5mil users.
- Work alongside other team members to integrate various components into finished product
- Work closely with product owner to create stories
- Continuously create new and interactive features that would help to improve user experience and user engagement.
- Assist with troubleshooting of issues as needed
- Participate in the design and architecture of software solutions
- Assist in developing and maintaining continuous integration pipelines
Salary range : 15 lpa - 30 lpa or more depending on candidate experience.
Skills required :
You will be best qualified if you have experience with several (not all) of the following:
- JAVA
- Python (Flask and Django)
- Spring/Spring Boot
- React
- Hibernate
- Linux
- REST
- Kafka
- Mysql
- AWS
- ELK Stack (Elasticsearch)
- CI/CD Pipelines
Qualifications:
- 2+ years of experience in Java based technologies
- 1+ years of experience in Python
- Experience in designing databases and system architecture
- 1+ years of experience in Front end technologies like HTML, CSS, JavaScript and ReactJs
Why join us?
- You will get to work with an experienced team who has worked in multiple startups.
- Experimenting is the name of the game. And POCs are the snacks that fuel them.
- Grow with us. It is a family
- Gain exposure to two of the fastest growing markets in the world - South East Asia and Social Commerce
- Experience in designing & developing systems/software for large business environments (Java, J2EE).
- Strong design and coding skills in Enterprise Java, REST & SOAP web services, ORM (JPA/Hibernate), Spring, Maven, JMS (ActiveMQ), Caching, XML, JSON.
- Experience with multiple integration technologies / frameworks.
- Must have good experience in Unix/Oracle/SQL.
- Experience in Agile Development, Scrum, and Iterative approaches.
- Experience and exposure to AWS Cloud Services and DevOps mindset and expertise is a plus Experience with Mule or any ESB (Enterprise Service Bus) is a plus.
JD:
As a Software Development Engineer at Amazon, you have industry-leading technical abilities and demonstrate breadth and depth of knowledge. You build software to deliver business impact, making smart technology choices. You work in a team and drive things forward.
Responsibilities:
- You solve problems at their root, stepping back to understand the broader context.
- You develop pragmatic solutions and build flexible systems that balance engineering complexity and timely delivery, creating business impact.
- You understand a broad range of data structures and algorithms and apply them to deliver high-performing applications.
- You recognise and use design patterns to solve business problems.
- You understand how operating systems work, perform and scale.
Requirements:
- You write high quality, maintainable, and robust code.
- You recognise and adopt best practices in software engineering: design, testing, version control, documentation, build, deployment, and operations.
- You have experience building scalable software systems that are high-performance, highly-available, highly transactional, low latency and massively distributed.
- Bachelors or Masters in Computer Science or relevant technical field.
- Experience in software development and full product life-cycle.
- Excellent programming skills in any object oriented programming languages - preferably Java, C/C++/C#, Perl, Python, or Ruby.
- Strong knowledge of data structures, algorithms, and designing for performance, scalability, and availability.
- Proficiency in SQL and data modeling.
Roles & Responsibilities:
Build efficient, testable, and reusable PHP modules.
Solve complex performance problems and architectural challenges.
Integration of data storage solutions (may include databases, key-value stores, etc.).
Integration of User Interfaces developed by front end developers.
Skills and Qualifications:
· Must have a bachelor’s degree or above in Computer Science or in similar field.
· Minimum 4 years of experience in PHP web development.
· Strong knowledge of front-end technologies, such as JavaScript, HTML5, and CSS3
· Strong knowledge of PHP web frameworks (CodeIgniter, NodeJS)
· Experience in creating custom modules and themes.
· Expert knowledge in web architecture.
· Strong understanding of MVC design patterns and oops concept.
· Strong understanding of full synchronous behaviour of PHP.
· Experience with modern UI frameworks such as React, Angular or Vue.js
· Experience in MySQL and the ability to write SQL queries.
· Proficient understanding of source control management such as Git, SVN.
· Proficient understanding fundamental design principles behind a scalable application.
· Familiarity with limitations of PHP as a platform and its workarounds.
· Ability to create database schemes that represent and support business processes.
· Experience with Edu Tech companies will be preferred.
. Immediate Joiner Preferred.
1. Design, develop and deliver web services and jobs that powers Niki, India's first transactional bot.
2. Write code that are clean, testable, performant, scalable, documented and secure
3. Design and architect new sub-systems, identity perf bottlenecks and suggest design/architect improvements
Qualifications:
1. Minimum of 5 years of software development experience preferably developing e-commerce applications
2. Bachelor’s and/or Master's degree in Computer Science or related field of study
Preferred Qualifications:
1. Fluent in Java or any other object oriented programming languages
2. Knowledge of Design patterns and design principles
3. Experienced in delivering REST style web services
4. Significant experiences in asynchronous and multi-threaded programming
5. Strong CS fundamentals with good hold on DS and Algo.
Good to have:
1. Knowledge of Spring
2. Experience with AWS, Azure or Google Cloud








