




lives of API developers and consumers easier. If you love thinking big and delving deep and
enjoy envisioning truly elegant solutions, this role is definitely for you.
What you will be Doing
- You will abstract away complex data interactions with easy-to-use APIs that will power several
mobile and web applications.
- You will also own, scale, and maintain the computational and storage infrastructure for the
various micro-services and long-running jobs, designed and implemented by you and the team.
- We will look to you to make key decisions on the technology stack, architecture, networking,
and security. We love working with bleeding-edge technology, especially if it improves the
malleability, and simplicity of our deliverables.
What you need
- The ideal Backend Engineers are polyglots who are fluent in HTTP and core CS concepts such
as algorithms, data structures, and programming paradigms, and always pick the right tools for
the right job.
- They have a keen eye for common security vulnerabilities and how to act on them (example:
DDOS attacks, SQL Injection etc.).
- They understand what it takes to work in a startup environment and know when to trade
performance for simplicity.
- They fail fast, learn faster, and execute in time.
- Strong communication skills, get-things-done attitude, and empathy
- Strong sense of ownership, drive and obsessive attention to detail.
- Comfortable with iterative development practices and code reviews
- Previous experience as part of a product-oriented team is a plus
Technical Skillsets:
NodeJS + Javascript, GoLang, Typescript + Nodejs, Clojure/Haskell/F#/Scala
(languages/environments)
Koa, Express, Play (frameworks)
Asynchronous Programming Frameworks (Akka, Nodejs, Tornado)
MongoDB, postgres, Bigtable, Dynamo (databases)
Apache Kafka, NATS, RabbitMQ, ZeroMQ (queues)
FunctionalProgramming, FRP (functional reactive)
microservices, multi-tenant, distributed-systems, distributed-computing, event-sourcing
Good to have Skillsets:
Clojure/Haskell/F#/Scala
Apache Kafka, NATS
FunctionalProgramming, FRP (functional reactive)
event-sourcing
Koa
Why you should consider this role seriously?
- We have an audacious vision of helping companies fight counterfeiting and managing their
supply chain more efficiently
- We have built a product and solved problems for some of the largest brands in the country and
tested platform at scale (With our tags present in over 50 Million products already). We have
plans to grow 10x in the next 1 year
- Ownership of key problems. Fast-paced environment
- We are a well-balanced team of experienced entrepreneurs and are backed by top investors
across India and the Silicon Valley (Venture Highway, Startup Buddy etc.)
- Competitive market salary
- Opportunity to work directly with the CEO, COO, CTO of the company
- A chance to interact with top-notch executives from multiple industries
- Open vacation policy (and we really mean it!)
- Open Pantry
- As a team, we love to travel :). An off-site every quarter

About O4S
About
Connect with the team
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- 5+ years of experience
- FlaskAPI, RestAPI development experience
- Proficiency in Python programming.
- Basic knowledge of front-end development.
- Basic knowledge of Data manipulation and analysis libraries
- Code versioning and collaboration. (Git)
- Knowledge for Libraries for extracting data from websites.
- Knowledge of SQL and NoSQL databases
- Familiarity with RESTful APIs
- Familiarity with Cloud (Azure /AWS) technologies
Job Description :
● Should have a strong knowledge of Node JS, Javascript.
● Proven Skills with databases like PostGres/MongoDB etc.
● Experience in Version Control Systems like GIT, Bitbucket.
● Ability to complete all phases of software development life cycle.
● Should have a working knowledge of using the latest development tools and techniques.
● Experience in Cloud such as AWS, Azure etc. is an advantage
● Basic knowledge of front-end UI design preferred.
● Must have good problem solving and analytical skills.
● Must be a team player, having good communication skills, self-starter
● Ability to pick up new technology is needed
Ideal Candidates will:
● Possess Strong sense of ownership
● Have an ability to work in high energy teams and drive results
● Have Good communication and documentation skills
● Enjoy sharing knowledge and eager to keep developing themselves


Key Responsibilities
● Evolving the architecture for performance and scalability.
● Design, develop and own components of a highly scalable, distributed web
services platform.
● End to end delivery of new features.
● Lead a team of software engineers and help create an environment of ownership
and learning.
● Constantly strive to improve software development process and team
productivity.
Technical Skills
● 6-10 years of relevant software development experience.
● Experience in developing scalable, fault-tolerant, distributed backend services.
● Exceptional proficiency in any 1 of the language - Java, RoR or Golang.
● Good experiences with databases and Schema design and strong RDMS
knowledge.
● Strong knowledge of Performance optimization and caching techniques.
● Fairly good understanding of AWS (or any equivalent) and a relational database.
● Experience with prevalent design patterns and advanced system designing.
Benefits
● This is an opportunity to work on a fairly complex set of systems and impro

Job description
Ruby on Rails Developer Responsibilities :
- Designing and developing new web applications.
- Maintaining and troubleshooting existing web applications.
- Writing and maintaining reliable Ruby code.
- Integrating data storage solutions.
- Creating back-end components.
- Identifying and fixing bottlenecks and bugs.
- Integrating user-facing elements designed by the front-end team.
- Connecting applications with additional web servers.
- Maintaining APIs.
Ruby on Rails Developer Requirements :
- Bachelor's degree in Computer Science, Computer Engineering, or related field.
- Experience working with Ruby on Rails as well as libraries like Resque and RSpec.
- Ability to write clean Ruby code.
- Proficiency with code versioning tools including Git, Github, SVN, and Mercurial.
· 3+ years of experience as a Software Engineer · Deep understanding of server-side code, with experience of developing in Node.js · Must have good knowledge of Express, Rest API, WebSocket, OAuth, OpenID and Node.JS best practices · Must be able to create separate micro-service for each business domain · Experienced in unit testing and should be able to achieve code coverage of 90% plus · Can write complex algorithm with multi-threading as a part of the feature · Experience in writing asynchronous programming · Knowledge of cloud applications like in AWS · Familiarity with code versioning tools such as Git, SVN, and Mercurial · Practical experience of delivering in an agile environment · Practical experience of knowledge of developing real-world solutions and platforms · Good understanding of security and performance considerations · Understanding of architectural and design patterns · Deep understanding of SQL and NoSQL databases |



About Simpl
The thrill of working at a start-up that is starting to scale massively is something else. Simpl (FinTech startup of the year - 2020) was formed in 2015 by Nitya Sharma, an investment banker from Wall Street and Chaitra Chidanand, a tech executive from the Valley, when they teamed up with a very clear mission - to make money simple, so that people can live well and do amazing things. Simpl is the payment platform for the mobile-first world, and we’re backed by some of the best names in fintech globally (folks who have invested in Visa, Square and Transferwise), and has Joe Saunders, Ex Chairman and CEO of Visa as a board member.
Everyone at Simpl is an internal entrepreneur who is given a lot of bandwidth and resources to create the next breakthrough towards the long term vision of “making money Simpl”. Our first product is a payment platform that lets people buy instantly, anywhere online, and pay later. In the background, Simpl uses big data for credit underwriting, risk and fraud modelling, all without any paperwork, and enables Banks and Non-Bank Financial Companies to access a whole new consumer market.
In place of traditional forms of identification and authentication, Simpl integrates deeply into merchant apps via SDKs and APIs. This allows for more sophisticated forms of authentication that take full advantage of smartphone data and processing power.
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We’re looking for polyglot developers who love to code. You should have >3 years of experience building high-quality products. You should have the ability to write clean code and must’ve worked on one of Ruby, NodeJS, Golang or Python
Responsibilities
- Develop new features - build POCs, get feedback, and scale is our default mode
- Building reusable and platform specific components
- Translating designs and wireframes into high-quality code
- Optimizing services for maximum performance
- Ensure faster release cycles by managing distribution over the cloud
Requirements
- Hands-on experience in all aspects of software development - analysis, coding, writing tests, deployment, the works.
- Knowledge of relational databases, SQL, ACID and distributed locking
- Solid OOPS understanding.
- Good exposure to building distributed systems, micro-services architecture.
- Continuous delivery experience
- Exposure to building platforms (not just products) would be a plus

This is currently a Hybrid mode WFO from the WeWork location closest to your home/option for a permanent Remote WFH position.
Mandatory Experience: 1 to 4 years as LEAD or Overall experience of 6+ Years in Software Development
Responsibilities :
- Build reusable code and libraries for future use.
- Own & build new modules/features end-to-end independently.
- Collaborate with other team members and stakeholders.
Required Experience, skills and abilities :
- Thorough understanding of Node.js, JavaScript, its quirks, and workarounds.
- Excellence in at least one framework like StrongLoop loopback, express.js, sail.js etc.
- Excellence in at least one Javascript framework like, vue.js, Ember, React or Backbone.
- Basic architectural understanding of modern-day web applications
- Diligence for coding standards
- Must be good with git and git workflow
- Experience with external integrations is a plus
- Working knowledge of AWS, GCC, Azure
- Expertise with Linux-based systems
- Experience with CI/CD tools like Jenkins is a plus.
- Experience with testing and automation frameworks.
- Extensive understanding of RDBMS systems
Interpersonal Skills :
- Go-getter attitude and a passion for making killer web applications
- Good communication and interpersonal skills.
- Ability to work in a high-pressure environment
- Ability to quickly understand complex problems and devise effective solutions
Extra plusses(Optional) :
- Knowledge of D3/NodeJS/dash etc.
- Experience with Cloud as a platform or Infrastructure.
- Inclination to application design standards
Other Details :
Salary: Market standard with performance-linked benefits Depending upon the candidates
Industry: Financial Technology
Functional Area: BFSI
Java Backend Engineer - Fintech Rocketship Pilot
Distributed systems, scalability, reliability, robustness, security, quality, building responsive real time systems - do these terms get your adrenaline high? Come be a part of a high growth, fast paced engineering team building for India’s new generation.
We have an open culture, you take responsibility and ownership of what you do. No bureaucracy. No bullsh*t.
If you are up for big engineering challenges, personal and professional growth, then let’s join forces!
You’ll fit right in if you have - 2-3 years of experience building, running and maintaining production services Strong with Java and JVM based services along with PostgreSQL Comfortable working with multiple cloud providers: mainly GCP and AWS Comfortable with CI and CD tools and best practices Done TDD and values TDD
Good to have –
Engineering aptitude - Owns small features, starting from technical design through completion. Appreciates and participates in technical discussions, and values guidance and feedback. Does not need mentoring on a daily basis; makes steady progress by themselves, and knows when to ask for help to get unblocked. Comfortable with referencing technical specifications, API references, source code, and man pages to understand concepts or solve issues.
Design process - Understands the role and importance of design, can write good backend specifications Can communicate API specifications and design goals to the end consumers API
Code reviews - Understands the value of peer-reviewed code; learns how to be unbiased and provide effective feedback. Asks senior engineers for help when needed (e.g.: architecture decisions, refactoring)



Position: Senior Software Engineer
Location : Gurgaon ( WFH untill Pandamic )
You'll be responsible for developing web applications for managing various working aspects of e-commerce, warehousing & supply chain systems. Your primary focus will be the development of server-side logic and client-side interfaces, ensuring high performance and responsiveness to requests from the front-end.
Responsibilities:
● Design, develop, test, deploy, and maintain highly scalable user-facing software applications.
● Participate in business discussions and present software solutions to their various problems.
● Coordinate full cycle product development activities with executive management, product management, quality assurance, support, and operations teams.
● Build software modules, libraries, and frameworks that support complex back-end applications as per the specifications and on time.
● Design schema for SQL and NoSQL database.
● Setup metrics tracking and inspect server code for speed optimization.
● Assign tasks to team members and gauge progress of various projects.
● Should open to work on PHP/Laravel.
Requirements:
● 4+ years hands-on experience on writing and deploying production quality code.
● Solid foundation in computer science with strong competency in data structures, algorithms and software design.
● Have created enterprise level applications in any programming language.
● Professional experience using PHP, Python and Golang among others.
● Development experience with Unix/Linux.
● Strong Experience with relational SQL and NoSQL databases.
● Hands on experience in using AWS technologies like EC2, lambda functions, SNS, SQS and worked on serverless architecture.
● Follow right back-end engineering practices and desire to continually keep up with its advancements.
● Constantly improve product quality, security, and performance.
● Experience in leading the team and working with cross-functional teams in a dynamic environment is a plus.
● Domain knowledge of warehousing operation related processes and ecommerce workflows is preferred.
● Should open to work on PHP/Laravel.


