Backend Developer (from SDE1 to SDE3)

Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 3-8 years
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.

Job Role Solution Architect

Experience 15+ years

Notice period Immediate

Location - Bangalore

Note: OMS & Retail domain Experience is mandatory

Introduction

We are looking for an experienced Solution Architect with strong hands-on expertise in Java and Microservices architecture.

Responsibilities include:

- Design and define end-to-end solution architecture for enterprise applications using Java and Microservices.

- Lead architecture discussions, technical design reviews, and solution blueprints.

- Drive microservices-based application design, including service decomposition, API contracts, and integration patterns.

- Define and govern RESTful API standards and service-to-service communication.

- Work closely with product owners, business stakeholders, and development teams to translate business requirements into technical solutions.

- Provide technical leadership and mentorship to development teams.

- Ensure solutions meet non-functional requirements such as scalability, performance, availability, and security.

- Review code, architecture artifacts, and ensure adherence to best practices.

- Support DevOps, CI/CD strategy, and cloud-native adoption.

- Identify technical risks and propose mitigation strategies.

Primary Skills :

- 10+ years of proven experience in the industry, with at least 3 years as an Architect or similar role designing and developing enterprise-scale applications.

- Bachelors in engineering / technology (4 year) or master's in computer applications (2 year)

- Must possess at least 6+ years of Software development experience.

- Expert knowledge in at least one object-oriented programming language like Java, one backend framework like Spring Boot / Node JS, one UI framework like React JS / Angular JS and RDBMS or NoSQL database.

- Excellent knowledge of front-end programming languages, such as HTML, CSS, JavaScript, and AngularJS, with the ability to render server-side and client-side content.

- Helps identify newer practices and adoption of existing ones. Ensure that the code quality is maintained via own and/or peer code reviews.

- Can lead the team in delivery of backend and user interface code. Ensure that the DevOps tasks are

executed well.

- Ensure that the software has the correct level of logging & monitoring in Production and LLEs.

- Exceptional problem-solving skills.

- Excellent written and verbal communication. Must understand the client’s business requirements and translate them into software requirements. Has a view of the deliverable timeline and escalates when needed.

- Ability to articulate technical designs & develop documentation, flowcharts, layouts, diagrams, charts etc.

- Experience in implementing OMS products for retail customers will be an added advantage.

- Ability to do estimation for the given requirements.

- Ability to lead technical discussions with clients.

- Must be able to do quick proofs of concepts and demos based on client requirements.

- Provide timely feedback on the performance of team members.

- Conduct interviews & provide feedback to achieve hiring objectives.

- Contributes to organization building functions such as hiring, training, mentoring, team building.

Secondary Skills :

- Experience with Docker and Kubernetes for containerized deployments.

- Exposure to Cloud platforms such as AWS, Azure, or GCP.

- Knowledge of CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI, etc.).

- Experience with Kafka / RabbitMQ or other messaging systems.

- Good understanding of SQL and NoSQL databases.

Basic knowledge of:

- Application security (OAuth2, JWT, TLS)

- Logging & monitoring (ELK, Prometheus, Grafana, CloudWatch, etc.)

Role & Responsibilities

We are looking for a hands-on Camunda Developer with strong experience in workflow orchestration and backend development. The ideal candidate should be able to design, build, and optimize end-to-end business processes using Camunda (preferably Camunda 8) and work closely with engineering and business teams to implement scalable and resilient workflows.

Key Responsibilities:

• Translate business requirements into BPMN workflows using Camunda (preferably Camunda 8)
• Design and implement end-to-end process orchestration across systems
• Build and manage service integrations (REST APIs, event-driven systems)
• Develop and maintain Zeebe workers / microservices (Python)
• Collaborate with stakeholders to refine workflows and handle edge cases
• Implement error handling, retries, and compensation mechanisms
• Analyse and improve workflows for scalability, reliability, and performance
• Ensure data consistency and idempotent process execution
• Work with cross-functional teams including data and analytics for process observability

Ideal Candidate

• Strong Senior Camunda Developer / Workflow Orchestration Engineer Profiles
• Mandatory (Experience 1) – Must have 4+years of hands-on experience in backend development and workflow systems, demonstrable through production-grade work on business process automation or backend service development.
• Mandatory (Experience 2) – Must have strong hands-on experience with Camunda and BPMN 2.0, including designing, building, and deploying end-to-end business process workflows in production.
• Mandatory (Experience 3) – Must have hands-on experience with Zeebe workers and the Camunda 8 stack, built and maintained as part of real orchestration systems.
• Mandatory (Experience 4) – Must have strong production-level coding skills in Python, used for building and maintaining Zeebe workers and microservices.
• Mandatory (Experience 5) – Must have experience designing and working within microservices architecture and distributed systems, with clear understanding of service decomposition, inter-service communication, and distributed system failure modes.
• Mandatory (Experience 6) – Must have hands-on experience building and consuming REST APIs and working with event-driven systems (message brokers, pub/sub, event streams).
• Mandatory (Skills) – Must have strong debugging and problem-solving skills in production workflow environments, with specific examples of resolving complex issues such as stuck processes, race conditions, or data inconsistency bugs.
• Preferred (Experience 1) – Exposure to cloud platforms (AWS / GCP / Azure) and experience with data platforms (e.g., Snowflake).
• Preferred (Experience 2) – Understanding of finance-related workflows (billing, reconciliation, etc.).

Required Education:

B.Tech./ BE - Computer, IT, Electronics only

Required Skills:

• 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

Good to Have Skills:

• 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

Job Responsibilities:

1. Collaborate with other senior engineers, and management, to achieve optimal application architecture and design
2. Develop efficient, secure applications, peer-review code, and document solutions within an agile-blended software environment
3. Communicate proactively with team members, infrastructure, security, and quality assurance to continuously improve processes and engineering excellence
4. Guide and train other developers in backend technology
5. Ability to work independently and as a member of a team spread over different time zones

Skills:

1. Understanding of object oriented programming skills and data structures
2. At least 6 years of hands-on development in Java, Springboot & Hibernate
3. Should have experience in Java Multithreading, microservices
4. Experience with developing web applications
5. Expertise with in Core Java (Collections, Exception handling)
6. Experience with J2ee( Servlets, JSPs)
7. Experience with all well known database technology and object-relational mapping, experience with databases (Mysql, Mssql)
8. Knowledge and development background in web-services/REST, AJAX, JSON, and XML
9. Experience with Windows and Linux based environments
10. Experience with Maven and GIT tools
11. Understanding of UI technologies (HTML, CSS, Javascript libraries) would be a plus
12. Good to have – AWS experience and Fintech domain experience
13. Awareness of Jenkins will be a value add

Position Title: Lead Product Engineer – Node.js

Company Overview:

AskSid was founded by two ex-Mindtree employees, who dreamt of bridging the communication gap in online retail consumer service at a global level. In a span of 4 years, AskSid has been repeatedly recognized and celebrated as a gamechanger in the retail space. From Nasscom declaring us as the No. 1 emerging SaaS company in India in 2019, to being named the “Most Innovative AI company” by CII and Accenture Ventures, we have carved out a definitive niche for ourselves. In 2021, AskSid officially became a Techstars Hub71 Accelerator portfolio company.

We are specialists when it comes to vertical AI for the retail domain and continually work towards innovating to make our customer’s lives easier through AI. We are looking for Engineers with a passion to build world-class technology products of internet-scale SaaS products.

Job purpose: 

Design, engineer, and maintain our proprietary framework, APIs, and technology components of a SaaS software product with the ability to scale it to millions of requests and thousands of concurrent users. 

Responsibilities

• Covert product feature requirements to software design that meets defined quality, maintainability, scalability, and performance KPIs
• Full stack engineering i.e. design, engineer, test, deploy, monitor, and maintain software components to QA and Production environments
• Conform, maintain, and improve continuous integration and delivery lifecycle processes
• Automation of engineering and production activities

Knowledge and skills

• JavaScript (ES6) / TypeScript
• Node.js - RESTful services and frameworks development
• Microsoft Bot Framework 
• Dependency Management using NPM / Yarn
• Databases : MongoDB / Elastic Search
• Version Control : Git
• Engineering – CI, CD

• JavaScript (ES6) / TypeScript
• Node.js - RESTful services and frameworks development
• Microsoft Bot Framework 
• Dependency Management using NPM / Yarn
• Databases : MongoDB / Elastic Search
• Version Control : Git
• Engineering – CI, CD

• Cache frameworks – Hibernate / Redis
• Stream / Queue processing platforms: Kafka / Fluentd
• Cloud Computing – Azure / AWS, Dockerization

Intro

EAGLE Power Holdings aims to launch a portfolio of new energy retail brands, all of which enjoy the efficiency of a single technology platform. We want to do more than offer cheap "green" tariffs, and believe that our range of engaging brands can identify with shifts in consumer preferences (e.g. growth of EV usage), with the value of local communities, and with proactive support of broader ESG causes.

Our long-term strategy is technology-driven, and involves unlocking value through the digitalisation of processes around customer acquisition, engagement, and retention.
Developers at EAGLE flourish in an agile process where collaboration and ego-free communication is valued. We believe in developing working software throughout the entire product development process. We engage in product thinking as a team and cross-functionality among product managers, designers, and domain experts is promoted.

How you fit in

Engineering is the executional function of EAGLE's software delivery wing. As a server-side developer at Eagle, you will take the lead on implementing various software services of our core energy retail infrastructure. Not only are you expected to write clean, tested, and maintainable code, you will also be a central part of a product team that iterates constantly, ships regularly, and learns continuously. You will have the creative freedom for learning, experimenting, and responsible risk-taking in a startup environment.

What your role consists of:

• Develop enterprise-scale backend services using Golang

• Collaborate with engineers, UI/UX designers, and product owners to build & ship new features and maintain/enhance existing ones

• Independently come up with extensible low-level software design. Write modular, tested, readable and performant code

• Debug production issues across services and multiple levels of the stack

• Help inform product prioritisation and scoping decisions by evaluating technical complexity and risk

• Improve engineering standards, tooling, and processes

• Maintain technical documentation

What you bring to this role:

• At least 1-3 years of demonstrated ability to rely on an iterative process to maintain momentum on projects in a distributed, collaborative, agile environment
• An ownership mindset: you should look not only at what you’re asked to do, but ask why you’re doing it and how it impacts on the rest of the product, our customers, and whether it makes sense
• Comfort with low-level engineering and ability to write efficient, performant and tested code
• Think deeply about systems and services and write high-quality code. We work mostly in Golang, with AWS Cloudformation. However, languages can be learned: we care much more about your general engineering skill than - knowledge of a particular language or framework.
• Excellent communication skills and ability to give and receive constructive feedback
• Passion for the whole product process. You will have your specific areas of focus, but we find those that are passionate about the bigger picture collaborate best with cross-functional teams

Where we are

While the company is registered in the UK, the software delivery wing is built to be remote-first. Whether you prefer to be in situ or a digital nomad (or anything in between), you are welcome. We are not inclined to support relocation to London for candidates that are not already based there, as we are a remote-first company. 

What’s in it for you

We offer competitive salaries based on prevailing rates in your local employment market, but there is further room to negotiate if you are the right candidate. In addition to your basic package, you can expect to receive the following benefits:

• Flexible working hours
• Unlimited annual leave
• On-the-job coaching, and access to mentorship by industry and domain thought leaders
• Full or partial sponsorship for professional/skill development courses, certifications, and other learning opportunities (evaluated on a case-by-case basis)
• Monthly allowance package for remote working (coworking membership or cash allowance)

About EAGLE Power Holdings

In a nutshell: Transforming energy retail and supply through cutting-edge software and AI technology

The venture is in ‘stealth mode’ as we lay the foundations for blast-off. It has been launched by a team with a history of entrepreneurial successes. These include one in the climate change space which services the Californian and North America carbon markets, and another which provides highly refined machine learning software to the energy arena in Asia. Both companies were acquired last year. 

This start-up was launched in London at the end of 2020, and will focus on the deregulated energy market in GB. The mission is to discover, or invent, a viable business and operational model for energy retail within the near-zero-cost energy ecosystem that the world is moving towards. This transformation is driven by the ever-decreasing prices of renewables/alternative generation, and by the exponentially growing volumes of national energy system data. We believe these factors have yet to truly disrupt the market, and intend to accelerate the sharing of value back to consumers.

Dot is a technology start-up, operating in Fintech and e-commerce space. With the aim to
revolutionize offline-to-online(O2O) space, Dot strives to enable digital transformation of Offline businesses using smart innovations. This is a huge market, serving the 1.3 billion strong Indian population.

The start-up is led by a strong and experienced team. It has already raised seed funding of ~US$ 35.5 Million from renowned investors.

To know more, head over to: www.dotpe.in

About the Founders
The company is led by an experienced team, three ex-PayU employees - Shailaz Nag, Gyanesh Sharma & Anurag Gupta, with proven expertise & knowledge of the fintech space as well as experience in building & managing companies.

Shailaz Nag is a well known visionary entrepreneur. He was ex-Managing Director and co-founder of PayU, (India’s largest and profitable Payment Company) which is currently valued at US$ 3 Billion. He was also one of the founding members of Ibibo Group. Shailaz Nag is a Chartered Accountant and also holds an MBA degree.

Gyanesh Sharma is an IIT Delhi alumnus, holding a B.Tech. degree in Computer Science. He has strong experience in leading tech teams, holding position of
● CTO at Shopclues
● Head of engg. at PayU
● Engg. Head at MakeMyTrip

Anurag Gupta has a decade long experience in building financial services business. He was Vice-President & Business head at PayU for Omnichannel business. He also headed Bank & Product Partnership for PayU.

Investors
Dot has raised seed funding of US$ ~35.5 million from
● Naspers Fintech (PayU) -
○ $120bn group with global presence. Listed in London, Johannesburg, Amsterdam
○ Presence in India : MMT-Goibibo, PayU, Flipkart, Swiggy, Byju’s, OLX
○ Global Presence : Tencent - WeChat, OLX
● Fosun RZ Capital
○ Affiliate of Fosun Group - A $100Bn Chinese conglomerate
○ Presence across global growth markets
● Info Edge
○ Parent company of naukri.com, jeevansaathi.com, 99acres.com, shiksha.com
○ Listed on NSE & BSE with a market cap of INR 27,000 crore
○ Major investor in zomato.com & policybazaar.com

Products
At Dot, we are solving the key problems that lie at the heart of Offline businesses by equipping them with commerce and fin-tech products. We are building a horizontal Omni-channel platform encompassing several Products all aimed at empowering all types of merchants, big or small, with Digital Technology. Whilst strengthening the merchants, our products also aim to direct this digital transformation towards improving the customer journey.
Our initial Product line-up has already garnered attraction from several renowned enterprises as well as significant interest from every medium and small-scale merchant we touch. And this just marks the start of our journey!

About Profile
Responsibilities
• Understanding the business requirement and provide good scalable solution
• Integration of user-facing elements developed by a front-end developers with server side logic
• Completely owning the backend services of a module
• Building reusable code and libraries for future use
• Optimization of the application for maximum speed and scalability
• Our stack is ReactJS, React Native, Golang, MySQL, NoSQL and hosting environment is AWS

Skills and Qualifications
• Extensive and expert programming experience in anyone programming language (Golang/ C/ Java).
• A solid foundation in computer science, with strong competencies in data structures, algorithms, software design and distributed system applications
• Experience with building and scaling apps with RDBMS as well as NoSQLs.
• Experience creating scalable Web APIs for mobile and browser consumption
• Integration of multiple data sources and databases into one system
• Understanding differences between multiple delivery platforms such as mobile vs desktop, and optimizing output to match the specific platform
• Creating database schemas that represent and support business processes
• Implementing automated testing platforms and unit tests
• Have a penchant for solving complex and interesting problems
• Worked in start-up culture with high levels of ownership and commitment
• Excellent coding skills – should be able to convert design into code fluently
• Engineers from Tier 1 colleges