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
Similar jobs
Job Title: Mid-Level Backend Engineer
Location: Remote
Type: Full-time or Project Basis
About Us:
At Tese, we are committed to advancing sustainability through innovative technology. Our platform helps SMEs and financial institutions manage their Environmental, Social, and Governance (ESG) goals using AI, IoT, and data-driven insights. We are looking for a skilled Backend Engineer with mid-level experience to join our dynamic team and contribute to building scalable, robust backend systems.
Role Overview:
As a Mid-Level Backend Engineer, you will be responsible for developing and maintaining backend services that power our core platform. You will work closely with our frontend developers, product team, and data scientists to implement solutions that are scalable, secure, and efficient. You will focus on building APIs, managing databases, and optimizing the performance of our services.
Key Responsibilities:
- API Development:
- Design, develop, and maintain RESTful APIs that serve our frontend applications and third-party integrations.
- Ensure high-performance and responsiveness of APIs, while following best practices for security and scalability.
- Database Management:
- Work with both NoSQL (MongoDB) , SQL (PostgreSQL, MySQL) and databases, ensuring efficient data storage and retrieval.
- Optimize database queries and manage migrations, ensuring data integrity and consistency across the platform.
- Microservices and Cloud Infrastructure:
- Develop microservices architecture using Docker and Kubernetes, ensuring that services are scalable and maintainable (Good to have).
- Work with cloud platforms (AWS, GCP, Azure) to deploy and manage backend services, ensuring high availability and fault tolerance.
- Collaboration and Documentation:
- Collaborate with frontend developers, data scientists, and product managers to gather requirements and develop backend solutions.
- Write clear, maintainable code with proper documentation, including technical designs, API specifications, and test cases.
- Performance and Security:
- Monitor backend services to ensure optimal performance, identifying bottlenecks and implementing improvements.
- Implement security best practices for APIs, databases, and backend systems, including authentication, authorization, and data encryption.
Qualifications:
- Education: Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
- Experience: 3-5 years of experience in backend development, with a strong focus on building scalable and efficient systems.
- Technical Skills:
- Proficiency in backend programming languages such as Node.js, Python.
- Strong understanding of RESTful APIs.
- Hands-on experience with SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) databases.
- Familiarity with cloud platforms such as AWS, Google Cloud.
- Knowledge of CI/CD pipelines and version control (e.g., Git).
- Soft Skills:
- Strong problem-solving abilities and the capacity to work independently as well as in a collaborative environment.
- Excellent communication skills, with the ability to explain complex technical concepts to both technical and non-technical stakeholders.
- A strong passion for sustainability and a desire to contribute to impactful projects that drive positive environmental change.
Preferred Qualifications:
The following qualifications are bonus, but not strictly necessary:
- Experience with Docker and Kubernetes for containerisation and orchestration (Good to have).
- Experience working with microservices architecture.
- Knowledge of ESG (Environmental, Social, and Governance) metrics and sustainability (Good to have).
- Familiarity with serverless architectures and API gateways.
Benefits:
- Competitive salary and benefits package and performance bonuses.
- Flexible working hours and remote work options.
- Opportunity to work on cutting-edge technology with a focus on sustainability.
- Professional development opportunities, including access to conferences and training.
How to Apply:
Interested candidates should submit their CV and a cover letter detailing their experience and passion for backend development and sustainability here.
Join Us:
Be a part of a forward-thinking team that is making a real difference in the world. At Tese, you'll have the opportunity to innovate, grow, and contribute to a more sustainable future through technology.
● Building and maintaining micro services.
● Develop new features and improve existing features of the application.
● Coding, Implementing, Unit Testing and Documenting Typescript and Javascript based services.
● Design, build, and maintain efficient, reusable, and reliable code.
● Code reviews and ensuring adherence to software development standards.
● Contribute to team and organizational improvements in process and infrastructure.
● Participating in requirements gathering and functional specification activities.
● Resolving and helping to mitigate production issues.
What you need to be successful
● Has proven himself as a solid individual contributor and has some initial management ability
● Understands the culture and upholds it
● Well respected with the team
● Looking to grow more as a manager than as an engineer
● Split time b/w hands-on technical work and people management of a small team
● Be a role model for the people in your team
● Responsible for team mentorship, technical planning, resource allocation & project delivery
● Build solid working relationships with counterparts outside engineering
● If we shortlist you for a lead role, then you'll have to mentor SDE-1 towards their SDE-2 journey.
● Progress up to manager in 2-3 years
● Strong Data Structure and Algorithms
● Experience of building micro services architectures, developing RESTful services, continuous integration, unit and integration testing.
● Proficient with Express, Jest, Sinon and other Javascript frameworks apart from
RDBMS and NoSQL databases - PostgreSQL, MongoDB
● Gauge or other BDD frameworks and experience in Fintech would be preferred.
● Fintech experience - preferred
Skills Required:
- 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.
Treflo is looking for an Engineering Lead to join our Product Development team and work on the financial revolution triggered by the dawn of Cryptocurrencies and Smart contracts along with us. As Engineering Lead, you will be leading the Tech teams focused on Building Web 3 products along with the Product Team to ensure smooth execution of Specifications, provide engineering and product development inputs, oversee the company's technical team, analyze briefs, identify risks, and develop work schedules. You should be able to work with your team and inspire them to reach their goals. We see successful Leadership as always expanding their industry knowledge and ability to quickly identify problems, understand accountability, and trustworthiness, and be able to build lasting relationships with their teams.
Responsibilities
Determining project requirements and developing work schedules for the team. Delegating tasks and achieving daily, weekly, and monthly goals. Analyzing existing operations and scheduling training sessions and meetings to discuss improvements. Up to date with industry news and emerging best practices and technologies. Working closely in collaboration with the business, product, and design teams. Provide guidance on best implementation. Product Oriented Thinking - should come up with ideas to improve our product continuously and marshal resources at hand.
Requirements
Bachelor's degree in Computer Science, Software Engineering, Information Technology, or related field. Minimum 4+ years of proven experience in deploying and maintaining Products. Minimum 1+ years of experience building and managing teams. Experience in Web3 stack with a clear understanding of concepts like decentralization, EVM, and cross-chains. Experience with Blockchain development - Smart Contracts, Solidity, Move, Haskell or WASM, etc. Expertise in frontend and backend tech stack - Node JS, Express, Typescript, Solidity, Smart Contracts, ReactJS, Android, Blockchains, Data structures, and Algorithms. Expertise in Databases like MongoDB & MySQL. Experience with solutions like Digital Ocean, Kubernetes, AWS, Docker, etc. Strong leadership, team building, hiring, and organizational abilities.
Desired Skills and Experience Blockchain,JavaScript,Node.js,React.js
Quantsapp is India's first Option Trading Analytics platform on mobile. With
ever-growing users,
it makes us one of the fastest growing platform for options trading in India.
Quantsapp wants to accelerate its growth even more and capture new
countries which requires the development team to grow.
At Qauntsapp we are looking for a dynamic team mate to take up a role of
Server side development to support the brain behind the application.
Job Summary :
- You will be responsible for developing new logics / products / features as
described by the business / research team.
- An ideal candidate should be strong in mathematical processes like
optimizations, matrix algebra, differential equation, simulation process etc.
and should also possess decent hands-on experience on python, sql server and
preferably Aws. IIT graduation is a plus.
Responsibilities :
- Create algorithms from scratch
- Create products and backend API's as described by the business team
- Back-test and create hypothesis as desired by the research team
- Code the backend of logics for consumption by the UI team
- Deploy websockets, rest api's & dynamic tcp, udp based data flow
- Deployment and maintenance of codes with version control
Requirements :
- Should possess a good knowledge of advanced computing and mathematical
process
- Strong hands-on on Python and optionally Matlab
- Knowledge of databases like Sql & No Sql
- Ability to work with tight time lines
- In depth knowledge and good hands on experience on Pandas and Numpy
- Knowledge of Option Markets is a plus
- Excellent organizational and multitasking ability
- Experience on AWS Cloud is a plus
JOB DESCRIPTION
DYT - Do Your Thing, is an app, where all social media users can share brands they love with their followers and earn money while doing so! We believe everyone is an influencer. Our aim is to democratise social media and allow people to be rewarded for the content they post. How does DYT help you? It accelerates your career through collaboration opportunities with top brands and gives you access to a community full of experts in the influencer space.
RESPONSIBILITIES
- Expert in Python with knowledge of Python best practices (PEP8)
- Strong knowledge of python web frameworks such as Django, Flask • Strong knowledge of building RESTful APIs using Django Rest Framework • Good Understanding of Django ORM Libraries
- Able to integrate multiple data sources and databases into one system • Strong experience on Linux
- Solid database skills in a relational database (i.e. PostgresSQL,MYSql) • Able to create database schemas that represent and support business processes • Strong unit test and debugging skills
- Proficient understanding of code versioning tools (git)
- Experience deploying on AWS is desirable
- Experience with Docker,Test Drive Development will be a plus
- Excellent interpersonal, leadership, influence and communication skills • Experience in designing scalable micro-services is desirable
QUALIFICATIONS
- 1-3 years of experience as a backend developer
- At least one product build and published
- SKILLS Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Work well under pressure and meet deadlines without sacrificing quality • Work with distributed development teams
Key Responsibilities:
• Actively work on server-side development on the .NET framework.
• Browser / client-side development on JavaScript (or its libraries such as JQuery).
• Work with data structures such as XML and JSON.
Required Skills:
• 2-4 years of hands-on experience on Web technologies.
• Minimum 6 months of experience on MVC is mandatory.
• Good knowledge and understanding of WCF, Windows services.
• Knowledge of Database development on MS SQL / Oracle DB.
• Good communication and problem-solving skills.
• Should be a self-starter and should have the ability to work under pressure.
• Should be passionate about sports.
Mandatory: Passionate about sports, Problem solving, Team player, Target & Result oriented.
As engineeing lead, you would be responsible for driving day to day development activities including coordination with customers and project management team in US. You are expected to be hands-on with the technology stacks we work with so you can contribute as a developer across projects on need basis.
Role & Responsibilities
- Lead the engineering effort across projects
- Interface with key stakeholders and apply your technical proficiency across different stages including Application Architecture, Design and Development
- Understand client's business requirements and be able to map them to technology solutions and make them work
- Design and build modern solutions informed by a deep understanding of cloud architecture and how distributed systems operate at scale
- Provide regular support and guidance to teams on complex coding, issue resolution and execution
- Establish and enforce best development and engineering practices including QA and DevOps
- Lead and manage your own team, but also get down to coding, testing, and designing solutions as and when needed
- Communicate effectively with teams, clients and business leaders within the company
Skills & Experience
- Minimum 6+ years of experience designing and building full stack applications using UI frameworks like Angular, React or Vue.JS and backend frameworks like Node.JS/ExpressJS or Python/Django/Flask or Laravel/Yii2/Symphony
- Minimum 2-3 years of experience as a Technical Lead mentoring team of 3 to 5 developers
- Strong knowlegde of cloud and distributed systems (AWS, GCP, Azure). Cloud certifications would be an added advantage.
- Deep knowledge of relational databases, SQL and NoSQL databases. Experience with Graph databases like Neo4j is desirable.
- Proficient in Git and CI-CD frameworks
- Strong communicator with visual, verbal, and writing skills to clearly articulate complex design problems and solutions
- Ability to work in an agile environment
Responsibilities:
• Familiar with the software development life cycle (SDLC) from analysis to
deployment.
• Comply with coding standards and technical design.
• Adapts structured coding styles for easy review, testing and maintainability of
the code.
• Integrate the developed functionality and/or component into a fully functional
system.
• Ensure unit and integration level verification plan are in place and adheres to
great quality of code at all time.
• Active participate in troubleshooting, debugging and updating current live
system.
• Verify user feedback in making system more stable and easy.
• Work closely with analysts, designers and other peer developers.
• Preparing technical training documents for onboarding new engineers.
Requirements:
• Bachelor’s degree in computer science or equivalent practical experience.
• Understanding of OOPS concepts, Persistence, Threading.
• Good understanding of version control system (GIT).
• Knowledgeable in data structures and algorithms.
• A background in Engineering with sound oral and written communication skills.
• 3+ years of experience working on the server side.
Additional Requirements For Experienced Candidates:
• Exposure to API designing, scalable architecture and thorough understanding of
systems.
• Great database modeling skills.
• Working knowledge of Databases, both relational (such as PostgreSQL) and inmemory
database (such as Redis).
• Good understanding of web stack and how all the pieces fit together.
• Competent with developing web apps in popular MVC frameworks (Django, RoR,
etc,).
• Experience with open-source projects.
• Experience in designing interactive applications.
We are looking for Wordpress Developer responsible for managing back-end and the interchange of data between the server and the users.
Your primary focus will be customizing and maintenance of existing plugin/theme, create new as per requirement and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the modules and plugins built by your co-workers into the application. Therefore, a basic understanding of PHP is necessary as well.
Responsibilities
- Build efficient, testable, and reusable wordpress modules
- Solve complex performance problems and architectural challenges
- Integration of data storage solutions
- Manage and update theme as per requirement
Skills
- Strong knowledge of wordpress
- WooCommerce plugin
- Understanding the fully synchronous behavior of PHP
- Understanding of MVC design patterns
- Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3
- Knowledge of object oriented PHP programming
- Understanding accessibility and security compliance
- Strong knowledge of the common PHP or web server exploits and their solutions
- Understanding fundamental design principles behind a scalable application
- Familiarity with limitations of PHP as a platform and its workarounds
- Creating database schemas that represent and support business processes
- Familiarity with SQL databases and their declarative query languages
- Proficient understanding of code versioning tools, such as Git









