Data Scientist

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.

Key Responsibilities and Duties

• Lead technical solution design:
• Lead the design of technical solutions that meet business requirements.
• Ensure technical solutions are scalable, reliable, and maintainable.
• Ensure technical solutions align with enterprise architecture and technology standards.
• Ensure the implementation of technical solutions for quality and performance.
• Define technical architecture:
• Define technical architecture and standards for new and existing systems.
• Ensure technical architecture aligns with business and technology strategies.
• Continuously evaluate and update technical architecture to meet changing business needs.
• Present the architecture to stakeholders.
• Provide technical guidance and expertise:
• Provide technical guidance and expertise to development teams.
• Collaborate with development teams to ensure technical solutions are implemented correctly.
• Ensure technical solutions meet functional and non-functional requirements.
• Develop and maintain technical documentation:
• Develop and maintain technical documentation, including architecture diagrams, specifications, and standards.
• Ensure technical documentation is accurate and up to date.
• Ensure technical documentation is accessible to relevant stakeholders.
• Manage technical risk and compliance:
• Identify and manage technical risks associated with technical solutions.
• Ensure technical solutions comply with regulatory and security standards.
• Monitor and report on technical compliance.
• Collaborate with other departments:
• Collaborate with other departments to ensure technical solutions align with business needs.
• Build strong relationships with key stakeholders.
• Provide technical guidance and support to other departments as necessary.
• Mentor and coach technical staff:
• Mentor and coach technical staff to improve their skills and knowledge.
• Provide feedback and performance evaluations to technical staff.
• Develop technical staff to assume greater responsibilities.
• Continuously improve technical architecture and design processes:
• Continuously improve technical architecture and design processes and tools.
• Ensure adherence to technical architecture and design standards and best practices.
• Identify and implement process improvements to increase efficiency and effectiveness.

Mandatory skills

Project Mandatory Skills

Project Desired Skills

• Designing enterprise grade systems from scratch
• Developing prototypes for custom frameworks
• Design and Develop custom workflow engines
• Worked with various database like Oracle, SQL, Postgres, Cosmos, MySQL, NoSQL etc
• Work experience with systems involving ETL processing (Pentaho or SSIS or Informatica)
• Work experience with Reporting tools (PowerBI)
• Work experience with Data Analytics
• Well-verse with Cloud services knowledge either Azure or AWS. Azure is desired
• Expertise in designing solutions for Cross-cutting concerns like Centralized logging, Observability, Activity Traceability, Security Mgmt., File exchange, Integration with external systems etc
• Very good verbal communication to interact with stakeholders
• Very good knowledge to use AI Coding Agents like Claude Code or Codex or Github Copilot for developing custom frameworks
• Very good knowledge to add workflows in the tools like Github or Static code analysis etc to automate the review processes
• Well-verse with Cloud services knowledge either Azure or AWS. Azure is desired
• Retail industry knowledge is desired skills
• Working with a team size of 20 is desired
• Working in any Legacy transformation to modern enterprise system
• Togaf certification
• Use of ADO and Azure Repo, Azure DevOps pipelines

Qualifications

• Bachelor’s degree in computer science, Information Technology, or related field.
• 12 – 15 years of experience in technical architecture and design in IT organizations.
• Strong understanding of enterprise architecture principles and best practices.
• Experience with a wide range of technologies and platforms.
• Strong leadership, communication, and collaboration skills.
• Ability to work in a fast-paced environment and manage multiple projects simultaneously.
• Ability to influence and negotiate with stakeholders.
• Strong problem-solving and analytical skills.

Criteria

Mandatory

Strong Dremio / Lakehouse Data Architect profile

Mandatory (Experience 1) – 5+ years of experience in Data Architecture / Data Engineering, with minimum 3+ years hands-on in Dremio

Mandatory (Experience 2) – Strong expertise in SQL optimization, data modeling, query performance tuning, and designing analytical schemas for large-scale systems

Mandatory (Technical Skills 1) – Deep experience with cloud object storage (S3 / ADLS / GCS) and file formats such as Parquet, Delta, Iceberg along with distributed query planning concepts

Mandatory (Technical Skills 2) – Hands-on experience integrating data via APIs, JDBC, Delta/Parquet, object storage, and coordinating with data engineering pipelines (Airflow, DBT, Kafka, Spark, etc.)

Mandatory (Architecture) – Proven experience designing and implementing lakehouse architecture including ingestion, curation, semantic modeling, reflections/caching optimization, and enabling governed analytics

Mandatory (Governance) – Strong understanding of data governance, lineage, RBAC-based access control, and enterprise security best practices

Mandatory (Stakeholder Management) – Excellent communication skills with ability to work closely with BI, data science, and engineering teams; strong documentation discipline

Mandatory (Company) – Candidates must come from enterprise data modernization, cloud-native, or analytics-driven companies

About the company

unHR is the brand name for Talent Loans Technologies Pvt. Ltd.

We provide HR-shared services to startups and small businesses who are either looking to hire their first HR or are struggling to manage their HR Processes.

 Roles and Responsibilities

1. Write high-engagement social media content that reflects our brand’s voice
2. Edit and proof work to ensure high editorial standards are met across all content outputs
3. Conducting research to formulate ideas or support writing.
4. Create compelling ad copy, landing pages, and marketing campaigns
5. Write high-quality product descriptions and provide supporting content
6. Work on creating graphics and social media content designs for the brand
7. All designs are to be made on canva.

Requirements

• Strong editorial, proofreading, and writing skills
• Familiarity with keyword research
• Experience with social media and content marketing
• Excellent interpersonal, verbal, and written communication skills
• Ability to manage multiple projects and meet deadlines under pressure
• Must have worked on Canva

• Experience working with community version PostgreSQL version 13 (or higher)
• Experience investigating/troubleshooting PostgreSQL performance issues with native Postgres catalog and statistics
• Familiarity with streaming and logical replication, HA, Backup and Recovery and Maintenance utilities including setup, configuration and monitoring.
• Strong troubleshooting and analytical skills
• 5+ years of PostgreSQL DBA experience

• Reviewing application requirements and interface designs.
• Identifying web-based user interactions.
• Developing and implementing highly responsive user interface components using react concepts.
• Writing application interface codes using JavaScript following react.js workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.

We Anju Siima Technologies Private Limited are looking for a Node JS developer with knowledge on Mongo DB, Angular basically who is proficient with backend programming language. Your primary focus will be on developing API components and workflows.

Job Skills & Responsibilities:

- Experience with Node.js (Loopback Express)

- Experience working with Docker, Redis, MySQL, MongoDB

- Understanding design principles behind a scalable application

- Basic understanding of web markup, including HTML5 and CSS3

- Write, debug, and deploy code to production

- Strong experience with object-oriented programming

- Strong fundamentals in Data Structures and Algorithms

- We are sensitive for timely delivery of different sprint development milestones.

- Proficient knowledge of cross-browser compatibility issues and ways to work around such issues

- Proficient understanding of code versioning tools, such as Git(Bitbucket), Mercurial, or SVN.

- Be willing to help your teammates, share your knowledge with them, and learn from them.

Skills that will help you in the role:

- Recent previous working experience as a React developer.

- Very strong knowledge of the fundamentals of Javascript and React, Redux

- Hands on experience with SASS, HTML and integration with RESTGraphQL APIs.