Backend Developer

Quick Facts About the Role

Role:

Senior Software Developer (Backend) - .Net with Microservices & Cloud

YOE:

6.5+ years

Skills:

C#, ASP. Net, Microservices Architecture, ASP.NET Core, Web API development, Azure Kubernetes Service (AKS), API Gateway / Azure API, Entra (Authentication), Azure Service Bus, Azure Functions, Azure Blob storage, Caching, NoSQL Databases

About the Role

The Software Developer Senior Designs, builds, tests, and – most importantly – ships high-value software that solves real problems. Strives for security, performance, simplicity, usability, and maintainability. Mentors and guides less experienced software engineers.

Responsibilities

1. Team Contribution

• Works within established agile methods, promoting an atmosphere of continuous improvement.
• Continuously learns new technologies and patterns and practices.
• Documents knowledge for the benefit of the team.
• Reports to the team on obstacles and roadblocks.
• Participates in, and occasionally leads, sprint planning, standups, retrospectives, and other team meetings.
• Promote patterns and best practices on the team.
• Mentors and guides the less experienced software engineers.

2. Planning and Design

• Works with the product team and stakeholders to refine and document requirements.
• Estimates effort for planning purposes.
• Designs and documents enterprise-level software architecture, consulting with Enterprise Architecture when appropriate.

3. Development

• Writes code to develop software that meets requirements and specifications.
• Follows established software development life cycle (SLDC).
• Writes code with readability and future maintenance in mind.
• Follows established source control standards and best practices.
• Adheres to established secure coding practices.
• Reviews code for other developers.
• Leads team-based development efforts.

4. Quality Assurance

• Validates QA findings and fixes defects.
• Develops integration and testing points in the software that allow for QA testing.
• Assists QA in running performance and load tests.

5. Release

• Assists with release planning and releases.

6. Support

• Assists the support team as needed, including root cause analysis.
• Writes maintenance and metric statistics scripts and entry points for measuring and monitoring.

Requirements

Solid Understanding of The Following:

Microservices Architecture:

• Microservices design principles (bounded contexts, loose coupling)
• API-first design and contract management
• Event-driven design principles
• Asynchronous messaging patterns
• Eventual consistency concepts
• Idempotency and message replay handling

Technical Skills:

• ASP.NET Core Web API development
• Web Apps
• Azure Kubernetes Service (AKS)
• Azure Blob Storage usage and lifecycle management
• API Gateway / Azure API Management concepts
• Entra (Authentication)
• Azure Service Bus
• Azure Functions
• Caching
• NoSQL Databases

Processes & Standards:

Git, GitFlow, OO Programming, Kanban, Secure Coding, & Agile Methodologies

Bonus Skills

• Excellent written and verbal communication
• Excellent documentation
• Continuous learning
• Collaboration across team and functional boundaries
• Troubleshooting and creative problem solving
• Design simple architecture that supports complex applications and APIs
• Architect extensible databases
• Author complex component-based client applications and restful APIs
• Perform advanced CRUD operations against multiple data sources
• Manipulate enterprise level data structures
• Mentor less experienced team members
• Take ownership of team processes and legacy applications
• Perform business analysis tasks, such as requirements gathering and wireframing

Evaluation Criteria

• Consider candidates with 6.5+ years of experience only (do not go below this threshold).
• Must have excellent communication skills.
• Ensure the mandatory technical skills are clearly reflected in the resume:
• C# (async/await, dependency injection, LINQ)
• ASP.Net Core
• RESTful APIs
• Microservices Architecture
• ASP.NET Core
• Web API development
• Azure Kubernetes Service (AKS)
• API Gateway / Azure API
• Entra (Authentication)
• Azure Service Bus
• Azure Functions
• Azure Blob storage
• Caching
• NoSQL Databases
• Candidates should have at least 3 years of hands-on experience with Azure and Microservices.
• This Azure and Microservices experience must be from their current or a recent previous project.

JOB DETAILS:

* Job Title: Lead I - Software Engineering-Kotlin, Java, Spring Boot, Aws

* Industry: Global digital transformation solutions provide

* Salary: Best in Industry

* Experience: 5 -7 years

* Location: Trivandrum, Thiruvananthapuram

Role Proficiency:

Act creatively to develop applications and select appropriate technical options optimizing application development maintenance and performance by employing design patterns and reusing proven solutions account for others' developmental activities

Skill Examples:

1. Explain and communicate the design / development to the customer
2. Perform and evaluate test results against product specifications
3. Break down complex problems into logical components
4. Develop user interfaces business software components
5. Use data models
6. Estimate time and effort required for developing / debugging features / components
7. Perform and evaluate test in the customer or target environment
8. Make quick decisions on technical/project related challenges
9. Manage a Team mentor and handle people related issues in team
10.  Maintain high motivation levels and positive dynamics in the team.
11.  Interface with other teams’ designers and other parallel practices
12.  Set goals for self and team. Provide feedback to team members
13.  Create and articulate impactful technical presentations
14.  Follow high level of business etiquette in emails and other business communication
15.  Drive conference calls with customers addressing customer questions
16.   Proactively ask for and offer help
17.  Ability to work under pressure determine dependencies risks facilitate planning; handling multiple tasks.
18.  Build confidence with customers by meeting the deliverables on time with quality.
19.  Estimate time and effort resources required for developing / debugging features / components
20.  Make on appropriate utilization of Software / Hardware’s.
21.  Strong analytical and problem-solving abilities

Knowledge Examples:

•     Appropriate software programs / modules

1. Functional and technical designing
2. Programming languages – proficient in multiple skill clusters
3. DBMS
4. Operating Systems and software platforms
5. Software Development Life Cycle
6. Agile – Scrum or Kanban Methods
7. Integrated development environment (IDE)
8. Rapid application development (RAD)
9. Modelling technology and languages
10. Interface definition languages (IDL)
11. Knowledge of customer domain and deep understanding of sub domain where problem is solved

Additional Comments:

We are seeking an experienced Senior Backend Engineer with strong expertise in Kotlin and Java to join our dynamic engineering team.

The ideal candidate will have a deep understanding of backend frameworks, cloud technologies, and scalable microservices architectures, with a passion for clean code, resilience, and system observability.

You will play a critical role in designing, developing, and maintaining core backend services that power our high-availability e-commerce and promotion platforms.

Key Responsibilities

Design, develop, and maintain backend services using Kotlin (JVM, Coroutines, Serialization) and Java.

Build robust microservices with Spring Boot and related Spring ecosystem components (Spring Cloud, Spring Security, Spring Kafka, Spring Data).

Implement efficient serialization/deserialization using Jackson and Kotlin Serialization. Develop, maintain, and execute automated tests using JUnit 5, Mockk, and ArchUnit to ensure code quality.

Work with Kafka Streams (Avro), Oracle SQL (JDBC, JPA), DynamoDB, and Redis for data storage and caching needs. Deploy and manage services in AWS environment leveraging DynamoDB, Lambdas, and IAM.

Implement CI/CD pipelines with GitLab CI to automate build, test, and deployment processes.

Containerize applications using Docker and integrate monitoring using Datadog for tracing, metrics, and dashboards.

Define and maintain infrastructure as code using Terraform for services including GitLab, Datadog, Kafka, and Optimizely.

Develop and maintain RESTful APIs with OpenAPI (Swagger) and JSON API standards.

Apply resilience patterns using Resilience4j to build fault-tolerant systems.

Adhere to architectural and design principles such as Domain-Driven Design (DDD), Object-Oriented Programming (OOP), and Contract Testing (Pact).

Collaborate with cross-functional teams in an Agile Scrum environment to deliver high-quality features.

Utilize feature flagging tools like Optimizely to enable controlled rollouts.

Mandatory Skills & Technologies Languages:

Kotlin (JVM, Coroutines, Serialization),

Java Frameworks: Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data)

Serialization: Jackson, Kotlin Serialization

Testing: JUnit 5, Mockk, ArchUnit

Data: Kafka (Avro) Streams Oracle SQL (JDBC, JPA) DynamoDB (NoSQL) Redis (Caching)

Cloud: AWS (DynamoDB, Lambda, IAM)

CI/CD: GitLab CI Containers: Docker

Monitoring & Observability: Datadog (Tracing, Metrics, Dashboards, Monitors)

Infrastructure as Code: Terraform (GitLab, Datadog, Kafka, Optimizely)

API: OpenAPI (Swagger), REST API, JSON API

Resilience: Resilience4j

Architecture & Practices: Domain-Driven Design (DDD) Object-Oriented Programming (OOP) Contract Testing (Pact) Feature Flags (Optimizely)

Platforms: E-Commerce Platform (CommerceTools), Promotion Engine (Talon.One)

Methodologies: Scrum, Agile

Skills: Kotlin, Java, Spring Boot, Aws

Must-Haves

Kotlin (JVM, Coroutines, Serialization), Java, Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data), AWS (DynamoDB, Lambda, IAM), Microservices Architecture

******

Notice period - 0 to 15 days only

Job stability is mandatory

Location: Trivandrum

Virtual Weekend Interview on 7th Feb 2026 - Saturday

Job Description

• Designing and implementing new features and functionality
• Establishing and guiding the website’s architecture
• Ensuring high-performance and availability, and managing all technical aspects of the CMS
• Helping formulate an effective, responsive design and turning it into a working website.
• Collaborate with the frontend team, and enable connectors with WordPress REST API and other tech platforms

Requirements

Relevant experience

• 2-4 years’ experience in authoring and developing for CMS’s including but not limited to WordPress

Required qualification

• University degree or equivalent diploma in technology and computer science.

Essential skills

• Good Overall knowledge of PHP
• Good understanding of front-end technologies, including HTML5, CSS3, JavaScript, jQuery
• Knowing the nuances of WordPress Themes – Installation and Configuration
• Knowing the nuances of WordPress Plugins with good coverage of which plugin is best suited for a particular requirement, and confidence to research plugins as well
• Knowledge of WP Caching, WP Query Object and WP Database Structure
• Knowledge of Knowledge of WordPress Scalability
• Knowing the nuances of WordPress editor with good coverage of which editor is best suited for a particular requirement, and confidence to research plugins as well
• Hands On Experience with Gutenberg Editor and Blocks
• Awareness of the WP Library, and Architectural Concepts is a must
• Experience building user interfaces for websites and/or web applications
• Experience designing and developing responsive design websites
• Comfortable working with debugging tools like Firebug, Chrome inspector, etc.
• Ability to understand CSS changes and their ramifications to ensure consistent style across platforms and browsers
• Ability to convert comprehensive layout and wireframes into working Wordpress pages
• Willingness to quickly learn new frameworks, changing theme market with ready updates on not just WordPress, but also PHP.

Nice to Have

• It would be good to have exposure to multiple CMSs like Shopify, Magento
• It would be good to have the ability to develop WordPress Plugins and Themes From scratch
• Experience on at least one PHP Framework (CodeIgniter, Laravel, YII)
• Knowledge of how to interact with RESTful APIs and formats (JSON, XML)
• Proficient understanding of code versioning tools (such as Git, SVN, and Mercurial)
• Strong understanding of PHP back-end development
• Knowledge of WordPress REST API
• Knowledge of WooCommerce

Benefits

• Unlimited learning and growth opportunities 
• A collaborative and cheerful work environment 
• Exceptional reward and recognition policy  
• Outstanding compensation  
• Flexible work hours  
• Opportunity to make an impact as your work will directly contribute to our business strategy
• 
  

At Nickelfox, you have a chance to craft a career path as unique as you are and become the best version of YOU. You will be part of a team with a ‘no limits’ mindset in an inclusive, people-focused culture. And we’re counting on your unique perspective to help Nickelfox grow even faster.  

Are you passionate about tech? Dedicated to learning? Come, join us to build an extraordinary experience for yourself and a dignified working world for all. 

What makes Nickelfox a great place for you?

In Nickelfox, you’ll join a team whose passion for technology and understanding of business has driven the company to serve clients across 25+ countries in just five years. We partner with our customers to fuel their growth story and enable them to make the right decisions with our customized technology services and insights. All in all, we are passionate to see our customers win the day. This is the reason 80% of our business comes from repeat clients.  

Our mission is to provide dignified employment and an environment that recognizes the uniqueness of every individual and values their expertise, and contribution. We have a culture that encourages everyone to bring their authentic selves to work. Our people enjoy a collaborative work environment with exceptional training and career development. If you like working with a curious, youthful, high-performing team, Nickelfox is the place for you.

Java Developers (4-5 positions)

What qualities are we looking for?

• 3 – 8 years of experience in building web applications
• Excellent command over Data Structures & Algorithms
• Exceptional coding skills in an Object-Oriented programming language (Java)
• Strong problem solving and analytical skills

Technical Requirements:

• Working experience on JAVA, Spring Boot. (building web services)
• Working experience in building microservices and distributed systems.
• Working experience on using messaging queues RabbitMQ/Kafka is a plus.
• Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery,  Angular 5+)
• Excellent knowledge and programming skills in data structures, algorithms.
• Familiarity with databases (e.g. MySQL, MongoDB)
• Proficiency with Git

• Writing back-end code and building efficient PHP modules.
• Write clean, well-designed code.
• Updating and altering application features to enhance performance.
• Conducting analysis of website and application requirements.
• Developing back-end portals with an optimized database.
• Integrating data storage solutions.
• Troubleshoot and fix any issues relating to PHP programs.
• Ensure smooth operations of web processes and infrastructure.

We are looking for a high-performing Lead Developer to build our Ecommerce platform and API framework powered by Machine Learning and Artificial Intelligence. Candidates for this role will be passionate about well written code, testing, and excel at coming up with simple approaches to complex problems.

Our work culture is #overachiever, very amiable, and at the same time always charged with excitement. We encourage our team members to take responsibility and grow into future leaders in the industry.

Job Responsibilities:

• Understand project requirements, writing bug free clean code and ensure that the solution works per the agreed architecture, SLAs, KPIs and business model
• Integrate Django backend with third party API
• 100% Hands on role
• Make architecture decisions that contribute to maintainable systems
• Adapt to rapidly evolving requirements and changing priorities and drive the team accordingly
• Responsible to drive and support Ecommerce project activities and ensure marketplace implementation, deepen customer engagement, satisfaction, and user engagement
• Reverse engineer for debugging errors in code and ensure quality control in the process.
• Continually drive products towards a meaningful balance between user needs, business objectives and technical feasibility
• Documentation and reference preparation for users by writing operating instructions including changes and revisions.
• Operate in a hyper-collaborative way and follow these guiding principles: Value common sense and simplicity over complexity, make decisions quickly and move nimbly, celebrate diverse ideas, Succeed and fail together as a team

Qualifications:

• Bachelor or Master Degree in Computer Science, Software Engineering from a reputed University
• 5 to 10 years of experience working in eCommerce domain, specifically at-least 3-5 years of experience working in Django and Python.
• React and/or Angular for front end
• Proficiency in MongoDB and MySql
• Technical Skills: JIRA, Gitlab, Rest API, GCP or AWS
• Integration experience with Payment gateway, shipping company and VAT, database concepts, Experience of web services
• Experience in performance profiling, tuning, and optimization, caching mechanisms with Enterprise level applicants
• Analytical, debugging, and troubleshooting skill with proven experience troubleshooting and fixing production bugs
• Experience in writing unit testing and test case automation.
• Ability to operate in Agile environment with a start-up mentality and unstructured environment, Energy, drive and passion to work, and operate in a digital world.