
Senior Fullstack Developer
at Fintech company looking for nodejs developer location remote
The tech stack looks like the below (expect this to change as we scale):
- Typescript for APIs (REST and GraphQL)
- Kafka, Spark, and data warehouses for ML pipelines (spark on python/scala)
- Solidity + hardhat for smart contracts (in the future, rust, go and move)
- AWS & Terraform
- Full nodes
You can expect to do some or all of the following:
- Read through protocols’ whitepapers and smart contracts to derive metrics and analyze risks
- Architect the backend for APIs, async jobs, and blockchain integration
- Build clean, concise APIs for customer integration, along with the documentation
- Setup, run and maintain full and archive nodes across different chains
- Integrate with multiple partners like exchanges and custody providers
- Fool-proof security across the stack - encryption, hashing, privacy, VPC, etc.
- Infrastructure as code - build terraform scripts and ensure easy replication of the infra across different regions
- Research the top DeFi protocols to uncover better insights for our customers and evaluate their risk profiles, security, and historical returns
- Manage production deployments, logging, and monitoring
We expect you to be fairly comfortable with working with both web3 and web2 stacks. We do not expect that you have web3 experience on day 1, but you should be willing to wear multiple hats, learn things quickly and move fast.
About you
- Generalist, a solid engineer who can learn things on your own and have an eye for clean, tested, and well-documented code
- We don’t look at the number of years of work experience as a criterion, but rather see what you have done in your life so far (side projects, open-source contributions, blogs, etc.). We don’t care about degrees, the institutions you went to, or the companies you worked for before. We are open to talking as long as you have good judgment, great clarity, align with our values and have a strong track record of thoughtful work
- Understand the fundamentals of building and integrating APIs and secure systems. Bonus if you know a bit about blockchains and protocols
- You can be strong on the backend, front-end, or can dabble everywhere. We want you to play to your strengths and will provide enough opportunities to learn and do things outside of your comfort zone
Pay and benefits We offer a solid, competitive package (including early-stage equity) that is location agnostic. We give you the flexibility to choose the split between cash and equity.

Similar jobs
Experience Required: 5-7 Years
No. of vacancies: 2
Job Type: Full Time
Vacancy Role: WFO
Job Category: Development
Job Description
We are looking for an experienced Senior Node.js Developer to join our development team. The ideal candidate will have a passion for backend development, expertise in building scalable applications, and a deep understanding of server-side logic. You’ll work with a team of talented engineers to develop improve, and scale our backend systems.
Roles & Responsibilities
- Backend Development: Design and implement APIs, web services, and backend systems usingNode.js.
- Database Management: Develop and optimize database solutions, ensuring data consistency, integrity, and security.
- Collaboration: Work closely with frontend developers, designers, and other team members to create a cohesive product.
- Testing & Debugging: Write unit tests, perform debugging, and ensure the codebase meets quality standards.
- Scalability: Ensure the application is scalable, maintainable, and performs well under high traffic.
- Code Review: Participate in code reviews, share feedback, and promote best practices for coding.
- Documentation: Maintain clear, comprehensive documentation for system architecture, APIs, and codebase.
Qualifications
- Bachelor’s degree in Computer Science, Engineering, or a related field.
- Experience: 5+ years of experience in backend development with Node.js.
- Proficiency in JavaScript and ES6+ features.
- Experience with RESTful and/or GraphQL API design.
- Knowledge of frameworks like Express.js or Koa.
- Familiarity with database technologies(e.g., MongoDB, MySQL, PostgreSQL).
- Understanding of containerization (Docker) and cloud services(AWS, GCP). Tools: Proficiency in Git, CI/CD pipelines, and other dev tools.
- other Skills: Strong problem-solving skills, ability to work independently, excellent communication skills.
You will be working on:
- As a senior backend engineer, you will be expected to execute and deliver large and complex projects end-to-end, with or without the involvement of other team members
- Ensuring timely delivery of all product deliverables
- Play a key role in technical discussions within the team and be the go-to person for the team for guidance and troubleshooting
- Understand key Business and Engineering metrics around performance, quality, and availability and work regularly with the team to push the boundaries and improve them periodically
- Proactively participate in code reviews and architecture and design discussions
- Mentoring junior engineers and setting best practices for coding, code reviews, etc.
- Help the organization in building a top-quality team by participating in hiring initiatives and evangelizing about contributions, accomplishments, and victories
We are looking for:
- Strong and self-motivated individuals, should be able to independently drive decisions
- Solid experience in building web-based products
- Overall of 4+ years of expertise in at least one dynamic programming language and one MVC web framework, preferably Ruby on Rails
- Expertise in Database modeling, preferably relational DB, spotting DB bottlenecks, and writing optimized DB queries
- Expertise in all common Cloud technologies, preferably AWS. Knowledge of CI/CD tools and workflows
- Proven track record in building highly-available and scalable distributed systems
- Willingness to play and explore with new technologies and be a Subject Matter Expert and support them
- Someone who believes in small incremental improvements and is passionate about refactoring
- A keen eye for quality with regards to following and establishing good coding practices, improving code coverage
- Good stakeholder management, ability to build trust and rapport with internal and external stakeholders
Responsibilities:
Develop and maintain high-quality, scalable, and efficient Java codebase for our ad-serving platform.
Collaborate with cross-functional teams including product managers, designers, and other developers to
understand requirements and translate them into technical solutions.
Design and implement new features and functionalities in the ad-serving system, focusing on performance
optimization and reliability.
Troubleshoot and debug complex issues in the ad server environment, providing timely resolutions to ensure
uninterrupted service.
Conduct code reviews, provide constructive feedback, and enforce coding best practices to maintain code quality
and consistency across the platform.
Stay updated with emerging technologies and industry trends in ad serving and digital advertising, and integrate
relevant innovations into our platform.
Work closely with DevOps and infrastructure teams to deploy and maintain the ad-serving platform in a cloud- based environment.
Collaborate with stakeholders to gather requirements, define technical specifications, and estimate development
efforts for new projects and features.
Mentor junior developers, sharing knowledge and best practices to foster a culture of continuous learning and
improvement within the development team.
Participate in on-call rotations and provide support for production issues as needed, ensuring maximum uptime
and reliability of the ad-serving platform.
Merchify is a one-stop solution for creators to start their merch store for zero investment. Our goal is to empower creators to monetize their content and grow their audience without the need for any upfront investment.
We’re in search of a back-end engineer that specializes in building highly scalable, highly available, reliable, secure, and fault-tolerant systems. As a part of the Core Backend team, you'll be working on some complex and interesting problems. With a lean team like ours, you'll have ample opportunities to work with various aspects of the application and build something meaningful.
What you'll do?
- Work closely with design, product management, and front-end teams to create REST APIs using NestJS
- Write reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Work on the implementation of security and data protection
- Review and optimize the app usage by monitoring key metrics and rectifying the issues proactively
Must haves
- 1+ years of experience in NodeJS-based frameworks like NestJS, and microservices-based architecture is a bonus.
- Understanding of OOPS concepts, persistence, threading, queuing, and caching.
- Thorough knowledge of designing, implementing and scaling relational and document-based databases
- A love for systems and an ability to think through and plan for their life cycles, edge cases, interactions, and failure modes
- First principles thinking, Excellent problem-solving ability
- A good all-rounder with a can-do, startup mentality
Nice to haves
- Experience with ReactJS
- Cloud deployment and scaling experience
Why you should join today?
Merchify wants to make a change for the better in lifelong learning. By joining at the start of the adventure you will have an opportunity to make this your own baby and have fun shaping the future of the industry.
Responsibilities:
- Develop, record and maintain cutting edge web-based Node Js applications on service platforms.
- Building resilient Rest APIs microservice architecture.
- Use test-driven development and acceptance tests to ensure feature quality.
- Coordinate with co-developers and keep project manager well informed of the status of development effort and serve as the liaison between development staff and project manager
- Keep abreast of new trends and best practices in development.
Skills Required:
Ms-SQL, MongoDB, AWS services (S3 Batch, Lambda, Fargate), Nest Js, Express Js, Typescript.
- 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.
Roles and responsibilities
-
- Develop well-designed, performant and scalable microservices
- Write reusable, testable, and efficient code that follow software development best practices
- Integrate data storage solutions including databases, key-value stores, blob stores, etc.
- Expose business functionality to frontend/mobile applications and partner systems through secure and scalable APIs.
- Build integrations with 3rd party applications through apis’ to ingest and process data
- Ensure security and data protection aspects within the applications
- Contribute to devops by building CD/CI pipelines to automate releases
- Ensure high performance and availability of distributed systems and applications
- Interact directly with client project team members and operational staff to support live customer deployments and production issues.
- 4+ years of experience in developing applications using Scala and related technologies.
- Thorough understanding of multithreading concepts and async execution using Actor model.
- Thorough understanding of Play framework, GraphQL and GRPC technologies.
- Experience in using DAL and ORM (Object Relational Mapper) libraries for data access.
- Experiencing in developing and hosting APIs and integration with external applications.
- Experience in building data models and repositories using relational and NoSql databases.
- Knowledge of JIRA, Bitbucket and agile methodologies.
- Good to have knowledge of AWS services like Lambda, dynamodb, kinesis and others.
- Understanding of fundamental design principles behind a scalable application.
- Familiarity with event-driven programming and distributed architectures.
- Strong unit test and debugging skills
- Affinity for learning and applying new technologies and solving new problems
- Effective organizational skills with strong attention to detail
- Experience in working with docker is a plus
- Comfortable in working with Unix/Linux environment
- Strong communication skills — both written and verbal










