
Senior Java Developer / Architect (Consultant - Part time / Full time)
at HeyMath

Developed in formal collaboration with the University of Cambridge in May 2000, HeyMath! is an Ed-Tech company whose mission is to Raise the Game in Maths for school systems around the world. We do this using technology to deliver engaging teaching methodologies and personalised learning paths for students. HeyMath! has been successfully adopted by CBSE schools since 2004, with positive outcomes for the entire ecosystem.
Check us out at www.heymath.com
We plan to work mainly from home in 2021 and the virtual office atmosphere is collegiate, informal and friendly, with small high-impact teams making a difference to customers.
What we are looking for:
• Experience in building and re-engineering cloud based solutions on AWS.
• Strong knowledge of Object Oriented Programming(OOPS) and design patterns is a must.
• Hands-on development on Spring MVC framework.
• Experience working on Java 8 or above.
• Must have very good knowledge of RDBMS such as MySQL and performance tuning of the same.
• Good knowledge of Javascript frameworks such as React JS.
• Exposure to server-side and client-side caching mechanisms.
• Basic understanding of proxy servers, load balancers and CDN.
• Ability to debug the applications and provide instant workable solutions.
• Experience working on Elastic Search / Kafka / Kubernetes or all is a nice to have.

About HeyMath
About
Connect with the team
Similar jobs
About the Role:
We are seeking a skilled Java Developer to join our team. The ideal candidate will have strong experience in core Java development along with exposure to modern frameworks and tools. You will be responsible for designing, developing, and maintaining scalable applications while ensuring performance, security, and code quality.
Key Responsibilities:
- Design, develop, test, and maintain Java-based applications.
- Write clean, efficient, and reusable code following best practices.
- Collaborate with cross-functional teams (Product, QA, DevOps, etc.) to deliver high-quality software.
- Troubleshoot, debug, and optimize application performance.
- Participate in code reviews and contribute to continuous improvement.
- Stay updated with emerging trends, tools, and technologies in the Java ecosystem.
Required Skills & Qualifications:
- Strong proficiency in Core Java (Java 8/11/17).
- Experience with frameworks such as Spring / Spring Boot / Hibernate.
- Good knowledge of REST APIs, Microservices architecture.
- Familiarity with SQL/NoSQL databases (MySQL, PostgreSQL, MongoDB, etc.).
- Understanding of multithreading, collections, and design patterns.
- Experience with version control systems (Git) and build tools (Maven/Gradle).
- Solid problem-solving skills and ability to work in an Agile environment.
Good to Have:
- Exposure to cloud platforms (AWS, Azure, GCP).
- Knowledge of containerization (Docker, Kubernetes).
- Experience with messaging systems (Kafka, RabbitMQ).
- Familiarity with CI/CD pipelines.


Manage / Customize the Existing Web Application and Products
Knowledge Required about SaaS Concept
Integration with other applications



ython Developer responsibilities include:
- Writing effective, scalable code
- Developing back-end components to improve responsiveness and overall performance
- Integrating user-facing elements into applications
Job brief
We are looking for a Python Developer to join our engineering team and help us develop and maintain various software products.
Python Developer responsibilities include writing and testing code, debugging programs and integrating applications with third-party web services. To be successful in this role, you should have experience using server-side logic and work well in a team.
Ultimately, you’ll build highly responsive web applications that align with our business needs.
Responsibilities
- Write effective, scalable code
- Develop back-end components to improve responsiveness and overall performance
- Integrate user-facing elements into applications
- Test and debug programs
- Improve functionality of existing systems
- Implement security and data protection solutions
- Assess and prioritize feature requests
- Coordinate with internal teams to understand user requirements and provide technical solutions
Requirements and skills
- Work experience as a Python Developer
- Expertise in at least one popular Python framework (like Django, Flask or Pyramid)
- Knowledge of object-relational mapping (ORM)
- Familiarity with front-end technologies (like JavaScript and HTML5)
- Team spirit
- Good problem-solving skills
- BSc in Computer Science, Engineering or relevant field

Job Description:
- Strong Experience of Node JS.
- Strong Experience of Reactjs development
- Experience in Server-side application architectures like Express.js, Meteor.Js, etc. is desirable.
- Experience in developing APIs is highly desirable.
- Experience in Mongo or MySQL database is a must.
- Understanding the nature of asynchronous programming and its quirks and workarounds.
- Understanding fundamental design principles behind a scalable application.
- Experience in delivering products using an Agile methodology is highly desirable.
- Experience with automated unit, integration and end-to-end testing is highly desirable.
- Experience in the area of network or systems management is a plus.
Senior Software Engineer - Payments
MishiPay
Competitive salary, bonus and potential share options
Bangalore
Please read our full advert before applying. You MUST have payments experience.
About Mishipay:
MishiPay (https://mishipay.com/" target="_blank">https://mishipay.com/) was founded in 2015 by Mustafa Khanwala (https://t.sidekickopen87.com/s3t/c/5/f18dQhb0S7kv8cW0B4W4V2M7g2zGCwVW8Jbw_83My4KPW4XXYRz3MqbyWW4Xq_Cl16gGDkf34lRCG01?te=W3R5hFj4cm2zwW4mKLS-3ZWVWBW3K2-zv1JxwY5W1Lyz993_-rybW3z9CQ13QZn51f3zd5DJ04&si=6558133869871104&pi=23656670-1dc8-41be-f0fe-f4c7fec4c64c" target="_blank">/in) bringing the best of the online checkout experience to physical stores.
We do this with our Scan, Pay and Go experience. Using our native apps on Android or iOS, or our web app available on Chrome or Safari, customers scan the products they wish to buy in store using their own phone and pay instantly. This eradicates the need to wait in line or touch store hardware.
As the world’s leading Scan and Go provider, we work with 30+ brands across 15 countries, including names like MUJI, Eroski, Flying Tiger Copenhagen, Spar, Londis and many others. The work is challenging, hard and long and requires you to be on top of your game but if the adventure and journey excite you then this is the place for you. We want to make sure that in exchange for this commitment from our team, we offer them the best package possible in terms of options, salary and bonus linked to the success of the business. You’ll also quickly see the impact of your work as we develop our products and customers
Requirements
We are looking for a Backend Engineer who possesses a passion for pushing mobile technologies to the limits and will work with our team of talented engineers to design and build the next generation of our mobile applications. You’ll play a key part in the development of our products, help to evolve and streamline our tech stack to suit our needs as we grow, and you’ll enjoy working in an environment surrounded by like-minded inspirational individuals.
Ideally we would love you to have Python, but we will also look at Java or other languages. It's essential you have worked as a Backend Engineer in a Payments domain.
Qualifications:
- Ideally, deep expertise with Python programming language and Django + DRF framework to build backend services
- Experience with Node.js and Kafka
- Substantial experience in building complex and scalable solutions using SQL databases
- Hands-on experience of database modelling for any NoSQL databases like MongoDB / Cassandra / DynamoDB or other
- Experience with full backend development life cycle in any programming language on a Linux platform
- Comprehensive operational experience including, optimizations & deployments with Kubernetes
- Experience leading multi-engineer projects and mentoring junior engineers
- Strong object oriented design skills, ability to apply design patterns, and an uncanny ability to design intuitive module and class-level interfaces
- BTech, MTech, or higher in Computer Science or related technical discipline (or equivalent)
You will:
- Take ownership of a functional area from product conception to delivery
- Contribute to engineering requirement documents (ERDs) by defining work breakdown, estimating tasks duration & setting milestones
- Take non-functional requirements (Reliability & Availability, Scale, horizontal scalability) and Tech stack decisions
- Participate in daily agile team stand-ups
- Coach and mentor junior team members
- Own code base & documentation quality
- Actively work to clear maintenance debt as we continue improving our tech
Benefits
Why MishiPay?
You’ll work with an inspirational multi-cultural team, based in our central London HQ, the US and Bangalore, who are redefining the retail industry globally. We offer a tight-knit, collaborative and exciting work environment, coupled with the opportunity to see the apps we develop live in action within some of the world’s largest retailers, impacting the lives of millions of shoppers. You’ll also get:
- Yearly Bonuses and Share Options
- Learning and Development Monthly Allowance
- A chance to be recognised in one of our two monthly award schemes (and win various prizes)
- A new MacBook
- Pitch Training
- Online Fitness Sessions
- Quarterly team-building and fun events for our London office and free lunches in Bangalore!
- Experience in designing and developing web-based applications using Java, J2EE, Web Services, MVC framework, Servlets Spring, Hibernate, Struts, REST, MYSQL.
- Experience in Database application programming for MySQL server using
Stored Procedures, Triggers, Views etc. - Experienced in implementing presentation layer using JSP, HTML, CSS, Ajax, JQuery. Java script.
- Formulated AWS (EC2, S3, Elastic Beanstalk, RDS, Route53, SG, ELB, IAM, CloudWatch). (ABOVE ONLY NEEDED FOR 7+ EXPERIENCE)
- Experienced in Analysis, Design, Development, Integration, Deployment
and Maintenance of Web services, Client Server and Web based applications. - Well versed with Agile development process, Scrum.
- Good knowledge in version control system tools like GIT.
- Ability to take independent responsibility as well as ability to contribute and be a productive team member.
- Excellent analytical, logical and programming skills, Self-Motivated, Self-Starter, Team Player can work with minimal supervision with effective Communication
skills and Organizational skills combined with attention and Time management skills.
About Alore
Alore brings revenue velocity to businesses by being their dependable growth operating system.
For further information on what Alore can do for growing businesses, please visit http://alore.io">alore.io
Alore is based out of Singapore with an office at Bangalore.
Who should not apply for this job
- If you are looking for a 100% hike in your salary but can't commit to what value you will bring on the table
- If you never read books
- If you jump companies every 11-12 months
- If you are not comfortable working on Saturdays
- If you have less than 2 years of experience
- If you have more than 4 years of experience
- If you have never worked in a product-led company
CTC:
8.5-10.5 LPA based on experience and on performance in the interview round (70% Fixed - 30% Variable Incentive based on delivery schedule) (We do ZERO deductions since the salary will be paid from Singapore)
At this position you will:
- Get solid experience with high-load distributed architecture using REST and Kafka services.
- Work with automated CI/CD processes, AWS cloud, and VoIP.
- Implement and support microservices based on Spring MVC, Camel, MySQL, Mongo, and Kafka.
Requirement
- At least 1 year of experience with Java Core, Java EE, Spring Core, Spring Boot.
- Not more than 3 years of experience in Java Core, Java EE, Spring Core, Spring Boot.
- Deep understanding of SQL database technologies.
- Experience with Scrum / Agile methodology.
- Willingness to learn and explore new technologies.
- Git: merge, rebase, cherry-pick should be fluent.
- Good level of English B1 or higher.
It would be a nice bonus to have:
-
Experience with distributed architecture.
-
Hands-on experience with Kafka, MongoDB, and Apache Camel.
-
Experience with cloud infrastructure (AWS, Google Cloud, Azure, Heroku, etc.).
-
Experience with client-side development (we use Angular8 for website).
-
A degree in computer science.
• Understanding fundamental design principles behind a scalable application.
• Creating database schemas that represent and support business processes.
• Implementing automated testing platforms and unit tests.
• Knack for writing clean, readable Java code.
Job Requirement:
• Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
• Hands on experience in designing and developing applications using Java EE platforms.
• Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
• Experience in the Spring Framework
• Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC)
• Experience with popular web application frameworks, such as Play and Spark
• Familiarity with Java GUI frameworks (such as Swing, SWT, and AWT depending on project requirements)
• Experience with both external and embedded databases
• Basic understanding of the class loading mechanism in Java
• Basic understanding of JVM, its limitations, weaknesses, and workarounds
• Proficient understanding of code versioning tools, such as Git
• Familiarity with build tools such as Ant, Maven, and Gradle
• Familiarity with continuous integration.

Requirements:
- Solid experience in Java or Golang
- Good to have exposure to ML
- Should have experience in cloud computing
- Has an ability to quickly learn and contribute in multiple codebase
- Overcomes roadblocks and requires minimal oversight
- Takes initiatives to fix issues/tech debts before assigned to him/her
- Able to deep dive into codebase and advise QA of possible regression impact
- Communicates tech decisions through design docs and tech talks
- Has delivered projects with end-to-end accountability
- Keeps track of industry trends and introduces right tech/tools for a given job
- Excellent understanding of software engineering practices, Design Patterns, Data Structures, Algorithms
- 4+ years of experience in product driven organisation
- A Bachelors or Masters degree in engineering from a reputed institute (preferably IITs, NITs, or other top engineering institutes)

