Senior Java Developer

Senior Full Stack Developer

Location: India, Remote

Employment Type: Contract

Department: Engineering

About Us

OpenAssets is building open standards for the next generation of capital markets, providing the trusted foundation for real-world asset tokenization and digital currencies.

We design regulatory-conscious solutions for alternative asset digitization and loyalty programs, enabling organizations to create secure, scalable digital assets and personalized engagement experiences.

Join OpenAssets and help shape the future of digital finance!

Overview

OpenAssets is seeking a Senior Full-Stack Developer to own end-to-end delivery across our multi-tenant platform. This is a hands-on engineering role spanning the full MERN stack: MongoDB schemas, Node.js services, and React.js operator and investor interfaces with working knowledge of EVM-based blockchain systems to support on-chain integrations.

The ideal candidate brings deep experience designing and shipping production systems end-to-end, optimizing backend and frontend performance, integrating with EVM blockchains, and mentoring engineers in a distributed, fast-moving environment.

What You'll Do

• Design, develop, and maintain full-stack web applications across the MERN stack: MongoDB, Express.js, React.js, and Node.js using TypeScript on both client and server
• Build and maintain RESTful APIs with consistent error handling, pagination, versioning, and authentication
• Model, index, and optimize MongoDB schemas using compound indexes, aggregation pipelines, and transactions on replica sets
• Develop responsive React.js user interfaces using modern patterns including hooks, state management, and component-level testing
• Implement authentication and authorization using JWT and role-based access control with secure middleware patterns and OWASP-aligned input validation
• Integrate with EVM-based blockchain systems (Ethereum, Polygon, Arbitrum, Base), including wallet interactions, transaction lifecycle handling, and on-chain/off-chain reconciliation
• Deploy and operate services on AWS using Docker and CI/CD pipelines, with structured logging, monitoring, and on-call participation
• Write automated tests (unit, integration, end-to-end) using Jest, Mocha, Supertest, or similar frameworks
• Conduct code reviews, mentor mid-level engineers, and contribute to engineering documentation and best practices
• Collaborate with product, design, and engineering leadership across time zones to scope features, define API contracts, and deliver end-to-end

Qualifications & Experience

• 8+ years of full-stack development experience
• Strong expertise in MongoDB, Express.js, React.js, Node.js, and TypeScript across both client and server
• Experience designing and operating RESTful APIs and frontend integrations at scale
• Hands-on experience with MongoDB data modeling, compound indexes, aggregation pipelines, and replica-set transactions
• Proficiency in:
• JWT/OAuth-based authentication and role-based access control
• Secure middleware patterns and OWASP-aligned input validation
• Pagination, query optimization, and performance tuning
• Experience integrating with EVM-based blockchain systems (Ethereum, Polygon, Arbitrum, Base), including wallet interactions, transaction lifecycle handling, and on-chain/off-chain reconciliation
• Hands-on experience with AWS infrastructure (EC2, ECS, Lambda, S3, CloudWatch, IAM)
• Familiarity with Docker, GitHub Actions, and modern CI/CD workflows
• Experience writing automated tests across unit, integration, and end-to-end layers using Jest, Mocha, Supertest, Playwright, or Cypress
• Solid understanding of backend and frontend security practices
• Strong ownership mindset and accountability
• Ability to drive technical execution independently and mentor mid-level engineers
• English fluency

Nice to Have

• Fintech, capital markets, or payments experience 
• MongoDB Atlas certification or replica-set tuning expertise
• EVM developer tooling (ethers.js, Hardhat, Foundry)
• Tokenized securities or on-chain asset issuance
• Multi-tenant SaaS architecture
• Event-driven systems (Kafka, SQS, BullMQ)
• GraphQL
• Performance engineering (keyset pagination, caching, Redis) 
• Distributed tracing (OpenTelemetry)
• Infrastructure as code (Terraform, Pulumi, CDK)
• Open-source contributions or technical writing
• CS-related Bachelor's degree
• AWS certifications
• Prior remote-first startup experience.

We are committed to providing equal opportunity for qualified applicants to contract positions, regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status. This is a contract opportunity, not a direct employment role.

Job Overview :

We are seeking a passionate and experienced Full Stack Developer with a strong background in Java and modern front-end technologies. The ideal candidate should possess a keen analytical mindset, be comfortable working in a cross-functional, fast-paced environment, and demonstrate the ability to take ownership of technical challenges. This role involves end-to-end development, from understanding business requirements to delivering scalable, high-quality solutions, while continuously seeking improvement and innovation. 

KEY RESPONSIBILITIES 

• Analyze entity relationships to design and implement efficient, scalable code solutions.
• Develop reports and conduct thorough analysis to identify defects and recommend enhancements. 
• Perform root cause analysis to resolve issues effectively and prevent recurrence. 
• Offer technical recommendations and develop improvement plans based on data-driven insights. 
• Apply a curious, problem-solving mindset to tackle complex business challenges and propose innovative solutions.   

 REQUIRED QUALIFICATIONS: 

• 5+ years of hands-on experience with Java, HTML5, Angular, TypeScript, JavaScript, and React. 
• Demonstrated knowledge or strong interest in full stack development. 
• Solid experience working with RESTful services, independent of platform.
• Proficiency in Oracle or SQL Server, with the ability to define data flow, high-level data design, and relationships.
• Exposure to AWS Cloud technologies and cloud-based development. 
• Working knowledge of version control tools such as Git or SVN.
• Experience implementing automated testing platforms and writing unit tests. 
• Proven ability to collaborate with cross-functional teams including Technical Leads, Product Managers, and Designers. 
• Strong communication skills with a flexible, team-oriented approach. 
• Prior experience working with US-based clients and adaptability to shifting priorities. 
• Self-driven and accountable, with a strong sense of ownership and responsibility.

Key Responsibilities:

1. Design, develop, and maintain applications using ASP.NET (Core/MVC) and C#.
2. Build responsive and dynamic front-end components using React.js, JavaScript (ES6+), TypeScript, Bootstrap, HTML5, and CSS3.
3. Develop and consume RESTful APIs for application integration.
4. Work with MySQL (and optionally MSSQL) for database design, optimization, and queries.
5. Ensure code quality, maintainability, and scalability through best practices and design patterns. Collaborate closely with UI/UX designers, backend developers, and QA teams.
6. Perform debugging, troubleshooting, and performance tuning for existing applications.
7. Maintain comprehensive technical documentation.
8. Participate in code reviews and mentor junior developers.

Preferred candidate profile:

• Strong hands-on experience with ASP.NET MVC / ASP.NET Core and C#.
• Proficiency in JavaScript (ES6+), React.js, and TypeScript.
• Strong skills in HTML5, CSS3, Bootstrap, and responsive design principles.
• Good knowledge of REST API development and integration.
• Strong experience with MySQL (tables, queries, stored procedures, indexing).
• Familiarity with Entity Framework / Dapper.
• Knowledge of Git or other version control systems.

Perks and benefits:

• Competitive Salary and Professional development opportunities and training.
• Opportunity to work with cutting-edge technologies in a fast-paced environment.
• Collaborative and supportive work environment.

Looking for Front End - React JS, Back End – Node JS.

Build, maintain, and optimize backend services, APIs, and applications using Java frameworks such as Spring, Spring Boot, or Hibernate.

A Senior Salesforce Developer with a strong background in Health Cloud, Sales and Marketing Cloud. This role is ideal for a candidate who can design, develop, and maintain custom applications and integrations while managing our Salesforce Health Cloud instance to optimize business processes, improve productivity, and drive success.

Responsibilities: 

• Design, develop, test, and deploy high-quality Salesforce solutions, including custom applications, Apex classes, Visualforce pages, Lightning components, and integrations with external systems, with a strong focus on Health Cloud.
• Collaborate with stakeholders to gather requirements, analyze business processes, and translate them into technical specifications.
• Ensure optimal system performance by optimizing code, implementing best practices, and conducting code reviews.
• Provide technical expertise and recommendations for Salesforce development projects related to Health Cloud and other Salesforce products.
• Serve as the primary Salesforce Administrator for our Health Cloud instance, managing workflows, validation rules, customizations, user access, and system configurations.
• Develop and maintain comprehensive documentation of developed solutions, including functional and technical specifications, user guides, and test cases.
• Assist in the migration of legacy applications and data to the Salesforce platform, ensuring seamless integration with Health Cloud.
• Stay current with Salesforce releases, features, and best practices, specifically in Health Cloud, to recommend improvements and new functionality.
• Provide support and troubleshooting for existing Salesforce applications, integrations, and Health Cloud configurations.
• Train end-users and provide ongoing support to ensure successful adoption of Salesforce solutions and effective utilization of Health Cloud features.

Requirements:

• Bachelor's degree in Computer Science, Information Systems, or a related field.
• 5+ years of hands-on experience in Salesforce development, with a focus on Health Cloud, Apex, Visualforce, and Lightning components.
• Salesforce Platform Developer I & II Certifications required; Health Cloud Consultant Certification is a plus.
• 3+ years of Salesforce administration experience, preferably in Health Cloud.
• Strong understanding of Salesforce architecture, including Sales Cloud, Service Cloud, Community Cloud, and Health Cloud.
• Proficient in Salesforce integration tools, such as REST API, SOAP API, and various middleware platforms.
• Experience with version control systems (e.g., Git) and continuous integration/deployment tools (e.g., Gearset).
• Strong understanding of agile software development methodologies.
• Excellent problem-solving, communication, and interpersonal skills.
• Ability to work independently and as part of a team, managing multiple projects and deadlines simultaneously.
• Commitment to continuous learning and staying current with Salesforce platform updates and best practices, specifically within Health Cloud.

Job Title
Full Stack Developer
Type: Full Time
Location: IIT Kanpur, UP [Onsite + Remote]
Desired Qualification: Bachelors/Masters in Computer Science, Statistics or relevant field
Experience : 1+ years
CTC: As per industry standard

About us
Lenek Technologies aspires to create an ecosystem of research and development around medical
technologies in India as well as strengthen its supporting domestic manufacturing sector. The company's
vision is to take quality healthcare to the masses by addressing roadblocks with innovative solutions through
technology.

Job Summary :
● We are looking for a Full Stack Developer to produce scalable software solutions. You’ll be part of a
cross-functional team that’s responsible for the full software development life cycle, from conception
to deployment.
● As a Full Stack Developer, you should be comfortable around both front-end and back-end coding
languages, development frameworks, and third-party libraries. Also, an excellent team player with
the ability to own deliverables/projects from beginning to end with little direct supervision.
● If you’re also familiar with Agile methodologies, we’d like to meet you.


Requirements:
● Proven experience as a Full Stack Developer or similar role
● Experience developing desktop, web, and mobile applications
● Strong algorithms, analytical skills, and data structures knowledge.
● Very good understanding of HTML5, CSS3
● Expert at Javascript, Javascript frameworks and libraries, JQuery, NodeJS, ReactJS and
ReactNative(good to have).
● Good understanding of server side library and bundling tools, such as Hapi, Express, Webpack, etc.
● Have sound knowledge and experience in scripting language Python
● Familiar with python backend frameworks like Flask.
● Have experience in source code management tools: preferably git
● Good to have knowledge of AWS Cloud.
● Familiarity with SQL and NoSQL databases e.g. MySQL, MongoDB and web servers (e.g. Apache2,
Nginx)
● Flexible to work on DICOM and PACS.
● Good understanding of asynchronous request handling, partial page updates, and AJAX
● Proficient understanding of cross-browser compatibility issues and ways to work around them
● Thrive in a start-up environment and enjoy wearing many hats. Integral and entrepreneurial way of
thinking and acting
● Excellent communication and teamwork skills



Responsibilities :
● Work with development teams and product managers to ideate software solutions
● Design client-side and server-side architecture
● Build the front-end of applications through appealing visual design
● Develop and manage well-functioning databases and applications
● Write effective APIs
● Test software to ensure responsiveness and efficiency
● Troubleshoot, debug and upgrade software
● Create security and data protection settings
● Build features and applications with a mobile responsive design
● Write technical documentation
● Work with data scientists and analysts to improve software

• Previous working experience as a MERN/MEAN  Stack Developer for 1 year (Minimum).
• In depth knowledge of NodeJS, ExpressJS or Restify
• Experience implementing applications using Angular 2+ versions or React
• Experience creating front end applications using HTML5, Angular/React, LESS/SASS
• Hands on experience with JavaScript
• Development on both client and server-side
• Experience on Angular 2+  and React Js will be an plus point
• Experience on both MEAN/MERN Technologies will be an advantage.

Position profile

Senior Software Engineer

Responsibilities and duties

Skill Set

Primary

• 4-7 years’ experience developing scalable Mobile, Web and Cloud based applications.
• 3-4 years’ experience with hybrid mobile applications using IonicJS.
• 3-4 years’ experience with backend frameworks: Node.js, Express.js, Mongoose.js.
• 3-4 years’ experience with JavaScript Frameworks such as Angular, CSS and HTML5.
• 1-2 years’ experience with Azure Cloud, Azure PaaS (Functions, Service Bus, etc.).
• 1-2 years’ experience with SQL Server and MongoDB database.
• Experience in developing applications involving data extraction, transformation, and visualization using tools like Power BI.
• Very strong experience with the orchestration of multiple asynchronous API calls via call backs, promises, and async/await.
• Hands-on experience with TDD, using libraries such as Mocha/Jasmine.
• Define and implement application & infrastructure migration methodologies and techniques to migrate workloads into Azure.
• Knowledge of CI/CD, Jenkins pipelines would be a plus.
• Knowledge of AWS Cloud would be a plus.
• Experience in developing native iOS and Android applications would be a plus.