Roles and Responsibilities:
- Design and implementation of low-latency, high-availability, and performant APIs
- Writing reusable, testable, and efficient code to build features and improvements to the Plum product in a secure, well-tested, and performant way
- Collaborate with Product Management and other stakeholders within Engineering (Frontend, UX, etc.) to maintain a high bar for quality in a fast-paced, iterative environment
- Advocate for improvements to product quality, security, and performance
Qualifications:
- 5+ years of experience in shipping backend applications in NodeJs, with knowledge of Express.
- Experience with NextJS and Typescript is a plus. Able to integrate multiple data sources and databases into one system.
- Understanding of fundamental design principles behind a scalable API infrastructure.
- Shows the drive for owning a project from concept to production, including proposal, discussion, and execution. Self-motivated and self-managing, with strong organizational Skills.
- Having experience maintaining a production grade open source project is a plus.

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Technical Expertise:
- Strong proficiency in OOP concepts, C#, .NET Core, Entity Framework, React, SQL Server, PostgreSQL, Dapper, ADO.NET, LINQ, and Web API Development.
- Experience with event-driven architecture and messaging systems such as Kafka or Rabbit MQ.
- Excellent debugging, troubleshooting, and performance optimization skills.
- Expertise in database development including tables, views, stored procedures, triggers, and functions.
- Hands-on experience with unit testing frameworks (XUnit).
- Proficiency in JWT services, Git, and third-party API integration.
- Experience in code review and mentoring junior developers.
- Preferred Qualification:
- Bachelor’s Degree in Business, Marketing, Communications, or related field.
At Qiro, we are a dynamic team united by a mission to foster a fair, transparent, and decentralized global lending market. Our focus lies in developing an institutional private credit protocol that seamlessly connects on-chain lenders with off-chain borrowers.
What we’re looking for:
Currently, we are seeking a Senior Backend Engineer to take charge of designing, developing, and maintaining our backend systems. As a pivotal team member, you will play a key role in ensuring the resilience, scalability, and security of our systems. You’ll collaborate closely with cross-functional teams, including smart contract developers, frontend developers, product managers, and designers, to deliver high-quality software solutions that drive our success.
What You'll Do:
- Build and contribute to backend systems supporting Qiro products, interacting with different blockchain networks and external systems.
- Design and develop scalable and resilient client-facing backend APIs, internal services, and scripts for efficient execution of business logic.
- Architect and implement scalable backend solutions capable of handling growing user loads and evolving business requirements.
- Develop and maintain comprehensive test suites, including unit tests, integration tests, and end-to-end tests, to ensure the reliability of backend systems.
- Implement monitoring and debugging tools to proactively identify and resolve issues, ensuring high system availability.
- Collaborate with engineers, QA, and DevOps teams to deliver high-quality code within project timelines.
- Document code, APIs, and technical processes to facilitate knowledge sharing within the team and support the onboarding of new developers.
What Makes a Great Candidate:
- Strong experience in Node.js and Typescript, with proficiency in frameworks like ExpressJS (additional stacks may be used based on project requirements).
- Previous work experience in the blockchain/DeFi space, demonstrating a strong technical understanding of the EVM ecosystem.
- Proven expertise in developing backend REST APIs at scale, handling high request volumes while maintaining low latency and optimal system performance.
- Extensive professional experience in software design and architecture.
- Deep knowledge of testing frameworks and principles.
- Passion for exploring new technologies and the ability to autonomously evaluate them, making suggestions for improvement.
Nice to Have:
- Bachelor’s or Master’s degree in Computer Science.
- Smart contract development experience.
- Understanding of real-world asset tokenization on-chain.
Benefits:
- Competitive salary with regular reviews.
- Flexible remote work.
- Flexible working hours.
- Opportunities for professional growth—your success has no limits when you're driven to excel.
If you are excited about the prospect of contributing to our mission and possess the skills and passion we're looking for, we invite you to be a part of our innovative journey at Qiro. Apply now to join a team where success knows no bounds!
- Programming experience : 5 to 8 years of programming experience
- Strong technical knowledge in any of the following programming languages : Ruby on Rails /Python/Java and willing to learn and work in Node.js.
- Good Programming aptitude
- Have experience designing and building large scalable web services.
- Have an in-depth understanding of database technologies (SQL and NoSQL)
- Have experience building RESTful APIs and have good knowledge of RESTful design patterns.
- Be able to communicate and work well within a team
- Brownie points if you have worked on Typescript & Nest.js
Backend Developer - Node.JS - AirFi
AirFi is a market leader in providing portable Onboard Passenger Entertainment and Mobile Crew Sales Solutions to various passenger travel segments. Founded in 2011 in The Hague, Netherlands - AirFi is the world's fastest-growing company in mobile InFlight Entertainment space and in providing ancillary sales solutions to enterprise customers.
AirFi brings disruptive innovations in a cost-effective manner to the airline cabin and other modes of passenger transport mediums and is making thousands of passengers and crew happy every day all over the globe!
Your key responsibilities
- Responsible for ideating, designing, developing, and supporting the backend services of AirFi web apps for different modes of passenger transport including major airlines across the world.
- Manage your components independently, including but not limited to: gather requirements; communicate design decisions to cross-functional teams including data science, engineering, analytics, and operations; proactively seek user feedback.
- You will help AirFi to quickly iterate and scale web app development to different segments of customers with standard processes, automation, monitoring, and rapid quality assurance.
- Proactively monitor the web apps space for continuous improvements and optimisations, looking for new opportunities and challenges.
What we look for
- Exposure to product development, self-driven, highly motivated and you must be independent in managing on your own components or features
- You must be extremely collaborative and enjoy working cross-functionally with other engineers, designers, and stakeholders
- You must possess an affinity for metrics and analytics - You must be proactive and must move fast or pivot to meet the changing needs of the product
- You are a problem solver and can use everything from front end to command-line tools to help you identify and fix issues.
- You should be diligent, thoughtful, have an eye for detail and have great oral and written communication skills
- Work with product and engineering teams on different data driven products and help drive/implement the Data flows for the same.
- Designing, integrating and documenting technical components for seamless data extraction and analysis
Must have technical skills
- MUST: Experience in Javascript or any modern-day JS frameworks - 7+ years
- Experience NodeJS, MongoDB or any other NoSQL DB - 7+ years
- Experience on building RESTful services and MVC patterns - 5+ years
You get bonus point for
- Responsive web-frameworks (e.g. Foundation, Bootstrap)
- Experience in AngularJS, React, etc - 2+ years
- Linux skills (we run on embedded Linux)
- Expertise HTML5, CSS,
- Experience on Cloudant, AWS, GCP etc.
- Experience on eCommerce or payments related domains
What you can expect
We promise to provide opportunities that not only satisfy your creative instincts but also let you make a significant impact on the products that we create and ultimately the business we are in. We provide a great platform to take up multiple roles based on individual interests or skills and collaborate with different global teams. We boast of a professional, fun work environment with a flat hierarchy and super supportive people to work with. We also encourage a work culture where - no idea is a bad idea and the team can shout it out to be heard!
What more do we offer?
Some of our benefits that our employees cherish:
- Flexible work timings, remote working and work from home options
- Liberal employee policies including genuine open-door policy and special focus on keeping the work culture non toxic
- A very liberal leave policy that includes paternity, adoption and sabbatical leaves
- We provide Skill enhancement sponsorships
- Celebratory team events, regular team virtual GupShups and fun engagement activities including the annual team (destination) meetings and the annual family gala dinner!
- Meal coupons and random gift vouchers
- Career longevity perks and so on!
When we're in office some of the things that make AirFi an interesting place to work are - healthy breakfast, snacks and a fully loaded pantry (read: health alert!); we try to keep AirFi as a fun place to work at and have interesting team activities on Fridays with occasional beers.
You get the opportunity to work and socialise with our global team when they visit or when you visit our customer offices/hangers. Last but not the least, in case you are an aviation geek - the opportunity to be on test flights and learn how the aviation industry works!
Follow and engage with Us!
- https://www.linkedin.com/company/airfi">LinkedIn
- https://www.facebook.com/AirFi.aero">Facebook
- https://twitter.com/airfi_aero">Twitter
- http://airfi.aero/">Website
- Building reusable code and libraries for future use
- Participating in all phases of the development and maintenance lifecycle, focusing on speed and efficiency
- Planning and implementing model data structures for scalability
- Working on the maintenance or enhancement of existing data structures
- Designing REST APIs which will be used by multiple clients
What you need to have:
- B.E./ B.Tech/ MCA
- Have experience of building large scale & complex systems with low latency and high availability.
- Have strong experience of working with design patterns & REST APIs.
- Have strong experience of working with Go routines.
- Knowledge of static code analysis tools.
- Must have strong experience with Build and Release management, Agile processes and Estimations.
- Strong understanding of implementing server-side code and designing the data architecture using modern web frameworks.
- Strong understanding of designing database schema.
- Should know about micro-services.
- Writing highly optimised code on server.
- Should be a fast learner and go-getter without any fear of failing.
- Willingness to learn new technologies.
- Experience with popular Golang frameworks like Revel.
- Know how of HTML / PHP.








