Back end developer (nodejs)

Brief:

We are pursuing a complex set of problems that involve building for an international audience and for an industry that has largely been service-centric. As an SDE at GradRight, you’ll bring an unmatched customer-centricity to your work, with a focus on building for the long term and large scale.

You’ll contribute to frameworks that enable flexible/scalable customer journeys and tying them with institutional knowledge to help us build the best experiences for students and our partners.

Responsibilities:

1. Contribute to design discussions and decisions around building scalable and modular architecture
2. Build clean, modular and scalable backend services
3. Participate in sprint ceremonies and actively contribute to scaling the engineering organization from a process perspective
4. Stay on top of the software engineering ecosystem and propose new technologies/methodologies that can be adopted
5. Contribute to engineering hiring by conducting interviews
6. Champion infrastructure as code mindset and encourage automation
7. Manage and mentor a small team of junior engineers

Requirements:

1. At least 4 years experience as an SDE, building large scale services
2. Extensive experience in at least one programming language and ability to write maintainable, scalable and unit-testable code
3. Strong understanding of software design principles and patterns
4. Excellent command over data structures and algorithms
5. Passion for solving complex problems
6. Good understanding of various database technologies with strong opinions around their use cases
7. Experience with performance monitoring and scaling backend services
8. Experience with microservices and distributed systems in general
9. Experience with team management
10. Excellent written and verbal communication skills

Good to have:

1. Experience working with node.js, MongoDB and Google Cloud
2. Experience in CI/CD and cloud infrastructure management
3. Worked on products that addressed an international audience
4. Worked on products that scaled to millions of users

The shift hours for this role is as follows: 2pm-11pm OR 3pm- 12am IST.

Role Overview:

Backend Developer- Healthcare Interoperability (Java/Spring Boot), will be responsible for developing components of a Healthcare Interface Engine. This includes working on EHR connectors, data transformations, and scalable APIs, while collaborating with the architect to deliver secure and high performance workflows

Responsibilities:

• Build EHR connectors for inbound/outbound data (Epic, Athena, Cerner, etc.).
• Implement HL7 v2, FHIR R4, and X12 EDI transaction flows.
• Design, build, and maintain REST APIs for interoperability services. Handle transformations between JSON, XML, HL7 v2, and EDI. Implement queuing, retries, and error handling logic.
• Collaborate with architect on scalable and secure workflows. Troubleshoot, debug, and resolve technical issues across the stack, ensuring optimal performance and reliability.
• Stay current with emerging technologies and advocate for continuous improvement within the team.

Requirements & Skills:

• Strong in Java / Spring Boot and Spring Integration
• RESTful API development & security (OAuth2, JWT)
• Data transformation libraries (Jackson, Smooks, HAPI FHIR)
• Parsing HL7 v2, Json, FHIR & X12 EDI (837, 835)
• Messaging systems (Kafka / RabbitMQ etc)
• SQL/NoSQL databases (Postgres, Redis etc)

• Proven software development experience in PHP

• Understanding of open source projects like Laravel, Drupal, Mysqletc

• Demonstrable knowledge of web technologies including HTML, CSS, Javascript, AJAX etc

• Good knowledge of relational databases, version control tools and of developing web services

• Experience in common third-party APIs (Google, Facebook, Ebay etc)

Key Responsibilities: 

• Rewrite existing APIs in NodeJS. 
• Remodel the APIs into Micro services-based architecture. 
• Implement a caching layer wherever possible. 
• Optimize the API for high performance and scalability. 
• Write unit tests for API Testing.
• Automate the code testing and deployment process.

Skills Required:

• At least 3 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds. 
• Excellent hands-on experience using MySQL or any other SQL Database. 
• Good knowledge of MongoDB or any other NoSQL Database. 
• Good knowledge of Redis, its data types, and their use cases. 
• Experience with graph-based databases like GraphQL and Neo4j. 
• Experience developing and deploying REST APIs. 
• Good knowledge of Unit Testing and available Test Frameworks. 
• Good understanding of advanced JS libraries and frameworks. 
• Experience with Web sockets, Service Workers, and Web Push Notifications. 
• Familiar with NodeJS profiling tools. 
• Proficient understanding of code versioning tools such as Git. 
• Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms. 
• Should be a fast learner and a go-getter — without any fear of trying out new things Preferences. 
• Experience building a large scale social or location-based app.

JOB POSITION- FULL TIME BACKEND ENGINEER (TRADING SYSTEMS)

Satsio is an African startup that is building a crypto exchange for both spot trading and perpetual futures trading. We have many exciting and innovative features and products in the pipeline. We are looking to add to our engineering team and we are recruiting for a full time backend engineer (trading systems).

How to apply:

After reading the job description, please complete the job application via the following link: https://forms.gle/wEdVVktX3iVLCqj59

Location

This is a fully remote position. We are accepting applications from worldwide candidates.

Remuneration

Salary range in USDT shown at the top of the advert, depending on skills, experience, and location, and subject to good performance, vesting shares of 1% of the business.

Requirements

·      Proficiency in Python and expertise in working with websockets

·      Proven experience in designing and implementing complex REST APIs

·      Project experience with Flask and Django

·      Proficient with Linux and experienced working with cloud servers

·      Excellent communication skills

·      Intellectually motivated and a quick learner

·      Fluent in both spoken and written English

Preferences

·      Proficient in C++ or another low latency language

·      Experience building matching engines and trading systems

·      Experience working in the crypto exchange industry

·      Experience with blockchain nodes, creating blockchain wallet systems, cryptocurrency deposit and withdrawal systems and optimising network fees

·      Familiar with the agile development process, Github flow, and modern software engineering practices

·      Align working hours with the standard 9am-6pm UTC+1 schedule

Key Responsibilities

·      Review and understand existing backend code base and make improvements where necessary

·      Matching engine and improving its speed

·      The system that updates user balances following user transactions and performs the necessary checks prior to permitting transactions

·      Cloud server configurations and deployment and cost optimisation of resources

·      Creating APIs with supporting documentation for users who trade algorithmically directly via APIs and not via the frontend

·      Work on our p2p trading product and KYC process

·      Building the perpetual futures trading product and integrating data from 3rd party APIs

·      Performing unit tests, integrated tests, performance tests and end to end tests

·      Working on various other backend tasks that the startup requires to be done

Startup culture

Our culture is one of constant innovation. Great teamwork, creativity, a passion for innovation, constantly trying to improve, being hard working, a self starter, a quick learner, taking initiative, a can do attitude, shipping product, loyalty, and having a positive mindset are all traits which we are seeking in our future colleague. We seek to create an environment whereby colleagues can see their long-term career to be with us and to flourish with us as we grow.

• Developing and maintaining all server-side network components.
• Ensuring optimal performance of the central database and responsiveness to front-end requests.
• Collaborating with front-end developers on the integration of elements.
• Designing customer-facing UI and back-end services for various business processes.
• Developing high-performance applications by writing testable, reusable, and efficient code.
• Implementing effective security protocols, data protection measures, and storage solutions.
• Running diagnostic tests, repairing defects, and providing technical support.
• Documenting Node.js processes, including database schemas, as well as preparing reports.
• Recommending and implementing improvements to processes and technologies.
• Keeping informed of advancements in the field of Node.js development.

We’re looking for a Ruby on Rails Software Engineer/Shopify App Developer who has experience working with the Shopify platform and is able to work on a Shopify app.

Your Daily Challenges

When we welcome you aboard we’ll introduce you to your Team, which consists of a front-end developer, a Shopify App Marketer who grew 2 apps to million dollar annual revenue, and a product manager.

These are the people you’ll work closely with on Product development day-to-day. Once you get settled in and learn more about the team, your day to day activities will look something like this:

1. Own the end-to-end development cycle for the Shopify app you’ll be working on.
2. Coordinate with fellow developers to get things done on time. 
3. Implement high quality code in an agile, test driven development environment
4. Review exception reports to identify and fix bugs
5. Development of new apps and features
6. Maintenance of existing features
7. Collaboration with cross-functional teams
8. Contributions of ideas to improve the product

Your Experience

1. 3-5 years of experience with Ruby on Rails
2. Experience with Shopify app development
3. Familiar with Sidekiq, PostgreSQL
4. Good understanding of HTML and CSS (positioning and styling)
5. Excellent communication skills
6. Takes pride in writing clean, organized, efficient code
7. An eye for detail
8. Experience with vanilla JavaScript and React a plus
9. Experience working in an entrepreneurial/startup environment

Your Compensation

1. The compensation range for this role is INR 14-18 LPA (~25K USD) + up to 5% equity.
2. The compensation varies with experience and qualifications. 
3. This is a full-time remote/work from home position.

Thanks for the time you took to read about this opportunity.