Senior Software Engineer (Back-End/Node.js/ AWS) | Holofy London

Numino Labs 

Business: Software product engineering services: Pune, Goa.

Clients: Software product companies in the USA.

Business model: Exclusive teams for working on client products; direct and daily interactions with clients

Client 

Silicon Valley startup in genAI: 45m+ in funding.

Product: B2B SaaS. 

Core IP: Physics AI foundation model for hardware designers with specific focus on semi-conductor chip design.

Customers: World's top chip manufacturers

Responsibilities

• Team player: Delivers effectively with teams; interpersonal skills, communication skills, risk management skills
• Technical Leadership: Works with ambiguous requirements, designs solutions, independently drives delivery to customers
• Hands on coder: Leverages AI to drive implementation across Reactjs, Python, DB, UnitTest, TestAutomation & Cloud Infra & CI/CD Automation.

Requirements

• Strong computer science fundamentals: data structures & algorithms, networking, RDBMS, and distributed computing
• 8-15 years of experience on Python Stack: Behave, PyTest, Python Generators & async operations, multithreading, context managers, decorators, descriptors
• Python frameworks: FastAPI or Flask or DJango or SQLAlchemy
• Expertise in Microservices, REST/gRPC APIs design, Authentication, Single Sign-on
• Experience in high performance delivering solutions on Cloud
• Some experience in FE: Js & Nextjs/ReactJs
• Some experience in DevOps, Cloud Infra Automation, Test Automation

About Us:

We are hiring for a pre seed funded startup called Zeromoblt (https://zeromoblt.com/), a high-agency Hyderabad-based startup revolutionizing student transportation with lean, intelligent tech stacks.

Our mission: architect world-class systems from scratch—fast, scalable, and algorithmically sharp—using Kotlin, React, AWS (EC2, IoT, IAM), Google Maps, and multi-cloud setups. Stealth mode operations mean you're building 0→1 products with founders, not fixing tickets.

What You'll Do

• Lead end-to-end ownership of complex systems: design, build, deploy, monitor, and iterate at scale.
• Architect high-performance backends in Kotlin (or JVM langs) that handle real-time routing and IoT data.
• Craft scalable React UIs that power ops dashboards and parent-facing apps.
• Drive cloud decisions across AWS, Azure/GCP—optimising costs for our bootstrap runway.
• Apply DSA/system design to solve hard problems like dynamic route optimization and predictive scaling.
• Shape the engineering roadmap: propose, prioritise, and ship features with founders.
• Mentor juniors while executing solo on high-impact bets—no layers, just results.

We're Looking For

• 3-6 years of hands-on engineering where you've owned and shipped production systems (prove it with code/stories).
• Elite CS fundamentals: advanced DSA, system design (distributed systems a must), design patterns.
• Mastery of Kotlin/Java + modern React; real AWS experience (EC2, IAM, CLI—you know our stack).
• Proven "leap-taker": startup grit, side projects, or open-source that screams hunger.
• Figure-it-out velocity: you thrive in chaos, learn our domain overnight, and deliver 10x faster than peers.

This Role Is Not For You If…

• You need structured roadmaps, PM hand-holding, or big-tech process.
• Comfort > impact: stable salary over equity upside and chaos.
• You've never worn all hats (dev, ops, product) in a resource-constrained environment.

Why Join Us

• Massive ownership: lead tech for 10k+ students, direct founder access, shape ZeroMoblt's scale.
• Flat, high-trust team: flexible Hyderabad/remote, no bureaucracy.
• Hungry culture: we hire hustlers scaling from 700 to 10k students your wins are visible daily.
• Hungry to Leap? Apply now!

ABOUT UNRAVEL CARBON

Unravel Carbon enables companies to assess their carbon footprint by tracking their digital financial footprint with its proprietary carbon emission factor model; making it easy, fast and convenient to become climate positive.

We aim to accelerate the participation of all companies, big and small, in the global fight against climate change. And we want to do it the 21st century way—autonomous, painless, and beautiful.

Unravel Carbon consists of a team of software engineers, data scientists, founders and climate experts with a passion to solve the world’s most pressing issue—climate change. Collectively, our leadership team has launched and invested in multiple companies, and are now combining their experience and knowledge here at Unravel.

We are backed by some of the world’s best funds and investors and are part of Y Combinator’s W22 batch.

Unravel Carbon was founded in 2021 with headquarters in Singapore.

Unravel Carbon on LinkedIn: https://www.linkedin.com/company/unravelcarbon/

ABOUT THE ROLE

We are looking for early members of our India team. You will be part of the team that establishes our India product development team. We are looking for candidates who have high potential, are excited about tackling the climate change problem and are excited to grow in a high-growth environment while working with the Singapore HQ.

A junior/mid-level backend software engineer. Must be comfortable to work in a small development team and have the initiative to work alone on smaller problem sets. Must be passionate about climate-tech for a better future.

• Build backend server applications using Flask/DJango framework
• Collaborate with the data team to integrate data pipelines into our backend system.
• Collaborate with the front end team.
• Analyze processes and code to troubleshoot problems and identify areas of improvement.
• Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members.
• Take lead on projects, as needed.

ABOUT YOU

• Willingness to learn, be a self-starter, and thrive in uncertainty; you would be one of the first few employees at an early stage startup, be prepared to venture into unknown territory, collaborate and learn
• Meticulous and detail-oriented
• Required skills:
• Python Backend Development Frameworks (Flask, Django). Backend development in other languages/frameworks can be considered too
• NoSQL databases (MongoDB)
• SQL databases (MySQL, Postgres, DuckDB)
• Running/managing Linux servers on Cloud services (AWS/GCS/Azure)
• Optional skills:
• Front End Web development (ReactJS)
• Python data science tools (Pandas, Numpy, Scipy)
• Python NLP tools

YOUR WORK STYLE

• An understanding of agile product development
• Self exploration and self learning of the latest technologies and applying them to solving the technical challenges our team face
• Self­-starter (proactive and independent) with an ability to prioritize different assignments and tasks to meet deadlines
• Comfortable working in a collaborative environment
• Eager to think outside of the box and creatively problem-solve

YOUR PREFERRED BACKGROUND

A Bachelor’s Degree in Computer Science, IT, or related discipline AND 1+ years working experience in the IT industry. 

WHAT WE OFFER YOU

We offer an exciting challenge for a purpose-driven person who thoroughly enjoys learning and takes up responsibilities in a multi-cultural, primarily virtual, and pioneering organization.  

We nurture a culture that allows you to thrive, where your skills can be honed and your ideas will be heard, and where collaboration across teams and with global partners is the default.

1. Develop, maintain, and enhance robust backend systems using Python3 and frameworks like Django (mandatory), Flask, and FastAPI (good to have).
2. Design, implement, and maintain highly efficient and automated continuous integration and continuous deployment (CI/CD) processes using Jenkins and configuration management with Ansible.
3. Elevate our testing culture by architecting and implementing innovative testing strategies, focusing on both unit and integration testing to ensure exceptional code quality and extensive coverage.
4. Follow peer-to-peer code reviews and cross-team collaboration to build scalable and reliable solutions.
5. Proficiently work with at least one cloud technology, preferably AWS, to deploy and manage applications in the cloud environment.
6. Possess knowledge of Nginx, load balancing, and scalability to optimize system performance and reliability.
7. Good experience working in distributed micro-service architecture and driving them with crucial requirements like request tracing, debugging critical issues, logging, monitoring, and alerting. 
8. Work in containerized environments using Docker and Docker Compose, and have experience with AWS ECS for container orchestration.
9. Prioritize maintainability and reliability in developing and maintaining software systems, pushing the boundaries of what's possible in our product ecosystem.
10. Collaborate effectively within a team, taking initiatives and driving projects forward with minimal micro-management.
11. Pave the way for maintainable and reliable codebases by introducing novel approaches and best practices in software development.

Requirements

1. Bachelor’s/Master’s degree in computer science.
2. Strong teamwork and communication skills, with a proactive approach to project management and task ownership.
3. Proven track record as an innovative Python developer with a focus on product engineering.
4. Visionary mindset to work in an agile environment, participating in sprint planning, stand-ups, and retrospectives.

Benefits

100% Remote

Insurance

Roles & Responsibilities

- Writing good quality code.

- Be able to design ,implement and deploy scalable backend applications on cloud(AWS/Azure).

- Be able to take ownership of projects and deliver them on time.

- Be able to lead a team and mentor junior developers.

Qualifications:

- BE/BTech degree in CS/IT or similar related field.

- 4+ years experience as backend engineer.

- Good knowledge in Python and at least one of the framework - Django, Flask, FastAPI, etc.

- Hands on experience in building microservices applications on AWS/GCP/Azure.

- Good understanding of platforms(Docker, AWS/Azure).

- Must have good understanding of Data Structures/Algorithms/Databases and other CS concepts.

- Experience working in multiple databases and data modelling.

- Experience writing APIs and related technologies like REST, JSON, websockets, grpc etc.

- Should be inquisitive enough picking up any language and frameworks based on need.

- Should be able to design/implement/deploy end-to-end systems.

- Having good knowledge on deploying cloud applications and with Dockers/Kubernetes is a plus.

- Experience building end-to-end analytics systems is a plus.

You will be responsible for developing features on the application and integrations end to end. You will be working closely with the Technical Team to come up with high-quality, resilient, and highly performant applications.

• Design and develop SaaS-based applications based on microservices architecture.
• Work on the core backend and ensure it meets the performance benchmarks.
• API and Integrations.
• Designing and developing APIs for the front end to consume.
• Constantly improve the architecture of the application by clearing the technical backlog.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.
• Work on the front end with ReactJS is a plus point.

• An enthusiastic individual with the following skills. We are open to promising candidates who are passionate about their work and are team players.
• A subset of the below skills should be fine as long as you are good.
• OAuth, API Integrations.
• Overall 6+ yrs of experience.
• Agnostic/Polyglot with multiple tech stacks.
• Worked on open source technologies – NodeJS, ReactJS, MySQL, NoSQL, MongoDB, CouchDB, DynamoDB, Clickhouse, Kafka.
• Backend exposure – good knowledge of building and integrating APIs.
• Efficient in building microservices in combining server & front-end.
• Knowledge of cloud architecture.
• Excellent knowledge and understanding skills on OAuth.
• Should have sound working experience with relational and columnar DB.
• Should be innovative and communicative in approach.
• Will be responsible for functional/technical track of a project.

You will closely work with the engineering team and support the Product Team of Plum.

A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls and Compass. Xoxoday works with over 1000 global clients. We help our clients in engaging and motivating their employees, sales teams, channel partners or consumers for better business results.

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. We however assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.

Role- Node.js Developer

Job description:

- Nodejs), MySQL, Postgre SQL
- Working experience of GIT
- Will prefer candidates preferred who have knowledge of GraphQL, Typescript
 - Well versed and experienced with unit testing, code coverage.
- Well versed with SOILD design principles and its application
- Good to have – some experience with Azure devops and/or azure functions.
- Good knowledge of designing and writing restful API

We are looking for a highly capable Node.js developer to optimize our web-based application performance. You will be collaborating with our front-end application developers, designing APIs, and integrating data storage and protection solutions.

• Minimum of two years previous experience as a Node.js developer.
• Minimum of two years of experience developing applications using MongoDB.
• Minimum of one year of experience developing applications using ExpressJs.
• Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
• Exceptional analytical and problem-solving aptitude.
• Great organizational and time management skills.
• Availability to resolve urgent web application issues outside of business hours.

• Ensuring optimal performance of the central database and responsiveness to front-end requests.
• Collaborating with front-end developers on the integration of the APIs.
• Developing high-performance applications by writing testable, reusable, and efficient code.
• Implementing effective security protocols, data protection measures, and storage solutions.
• Running diagnostic tests and identifying bugs.
• Documenting Node.js processes, including database schemas.
• Recommending and implementing improvements to APIs.