Back End Developer

About Us:

Tradelab Technologies Pvt Ltd is not for those seeking comfort—we are for those hungry to make a mark in the trading and fintech industry. If you are looking for just another backend role, this isn’t it. We want risk-takers, relentless learners, and those who find joy in pushing their limits every day. If you thrive in high-stakes environments and have a deep passion for performance. driven backend systems, we want you.

What We Expect:

• We’re looking for a Backend Developer (Python) with a strong foundation in backend technologies and

a deep interest in scalable, low-latency systems.

• You should have 3–4 years of experience in Python-based development and be eager to solve complex

performance and scalability challenges in trading and fintech applications.

• You measure success by your own growth, not external validation.

• You thrive on challenges, not on perks or financial rewards.

• Taking calculated risks excites you—you’re here to build, break, and learn.

• You don’t clock in for a paycheck; you clock in to outperform yourself in a high-frequency trading

environment.

• You understand the stakes—milliseconds can make or break trades, and precision is everything.

What You Will Do:

• Develop and maintain scalable backend systems using Python.

• Design and implement REST APIs and socket-based communication.

• Optimize code for speed, performance, and reliability.

• Collaborate with frontend teams to integrate server-side logic.

• Work with RabbitMQ, Kafka, Redis, and Elasticsearch for robust backend design.

• Build fault-tolerant, multi-producer/consumer systems.

Must-Have Skills:

• 3–4 years of experience in Python and backend development.

• Strong understanding of REST APIs, sockets, and network protocols (TCP/UDP/HTTP).

• Experience with RabbitMQ/Kafka, SQL & NoSQL databases, Redis, and Elasticsearch.

• Bachelor’s degree in Computer Science or related field

**Company Overview**

We are a VC-backed fintech startup developing an innovative online trading platform. As we scale, we're seeking a skilled Backend Engineer with expertise in Python to join our growing team and help build a robust, scalable infrastructure for our cutting-edge trading application.

We're based out of the UK and have our engineering team in India.

**Job Description**

We are looking for a backend developer who specialises in Python. Your role will focus on developing and maintaining the server-side logic, optimising performance, and ensuring seamless integration with the frontend. You’ll work closely with the engineering and product teams to deliver a high-quality, secure, and scalable platform.

**Responsibilities**

1. Develop and maintain server-side logic using Python

2. Design and implement APIs for seamless integration with frontend components

3. Optimise backend performance and scalability for high traffic and large data loads

4. Build and maintain databases, ensuring security, data integrity, and optimal performance

5. Collaborate with frontend engineers to ensure smooth integration between backend and frontend systems

6. Troubleshoot, debug, and optimise backend infrastructure

7. Implement data protection, security protocols, and authentication mechanisms (e.g., JWT)

8. Maintain and enhance real-time communication systems using WebSockets or similar protocols

**Required Skills**

1. Strong proficiency in Python and related technologies, knowledge of databases and SQL, and experience with web frameworks like Django or FastAPI

2. Strong analytical and troubleshooting skills, and the ability to solve problems

3. Good understanding of OOPs, task broking services, Queues, Redis

4. Familiarity with RESTful API design and integration

5. Strong understanding of database management (e.g., PostgreSQL, Redis) and caching strategies

6. Familiarity with modern authentication and authorization mechanisms (e.g., JWT, OAuth)

7. Proficiency in working with cloud hosting services (AWS, Google Cloud, etc.)

8. Experience with containerization and orchestration tools (Docker, Kubernetes)

9. Knowledge of real-time communication protocols (e.g., WebSockets, TCP, SSE)

10. Strong understanding of security best practices for server-side applications

11. Experience with version control (Git) and CI/CD pipelines

12. Minimum of 2-3.5 years of experience building scalable backend systems

**Perks**

1. Work From Anywhere Flexibility

2. Unlimited Leaves policy*

3. Competitive salary and unlimited growth opportunities

4. Insights on how HFT is done using cutting edge technology

If you’re passionate about building scalable, high-performance backend systems and want to be part of a cutting-edge fintech startup, we’d love to hear from you!

UKG's engineering teams wants to add 4 staff aug consultants (2 in US and 2 in Noida) to support their identity platform infrastructure, deployments to prod, escalations/KTLO, and debugging needs. They'll need to partner with internal dev teams who consume our Identity platform around any issues or new integrations needed. RCA/enhancing our observability.

They need to have the below qualifications:

• Linux (Ubuntu) - Understanding of Linux OS and has experience with troubleshooting complex issues that can be due to infrastructure related around disk/iops, network latency, jvm/gc related, as well as application related defects.

Python/similar scripting language to help automate manual tasks/remediation efforts.

• Ansible

• Identity platforms/technology -

SAML2/Oauth2/Directory server LDAP#python queryquerylanguage/OpenDJ/OpenAM/Auth0/Okta/SSO

• Java - understanding of Java tuning/best practices for high volume applications at scale

• Nginx

• Grafana • PagerDuty

• Postman/API • Kibana/Splunk

Dynatrace

GCP preferred. Azure is good as well.

OnScreen is looking for a full-time hands-on Software Developer responsible for bringing status disrupting products in the market.

As a Software Developer, you will be responsible for the design and coding of scalable and high performant web applications working on technologies including Microsoft .Net 4.0, Win 32, C#/C++,  and Azure. You will be a part of an Agile development team and would have full access to the complete development life cycle including opportunity to shape requirements and application design. We are looking for relevant experience of around 5-7 years.

Requirements

• Strong experience in Microsoft .Net desktoptechnologies including C#
• Strong application design experiencealong with writing Unit Tests.
• Strong data structure concepts
• Demonstrated experience in working on Enterprise-level
• Good communication skills,collaborative attitude, and mentoring mind-set.
• Desirable - Azure SQL, REST API, Azure deployment, Entity framework.

OnScreen was started to chart a better path for Enterprises facing countless barriers to adoption and efficiency. Our Founders, Directors, and Investors have extensive experience dealing with these problems and are passionate about building and providing a solution that alleviates these chronic pain points. To know more about OnScreen, please visit https://www.onscreen.us/

About Wise

Wise is digital infrastructure for online education. Oversimplified as ‘Shopify for Tutors’ i.e., an easy to use tool for tutors to start teaching online. We have grown to 2mn users in 12 months and have much to do. We are backed by an incredible set of investors and individuals who have built product you already use. We have a small but rockstar team, cheap equity, smart money, opportunity to capture a huge market ($60bn) and a chance to make an impact while doing so.

What we need

We need you, if you are a senior software engineer with 4+ years of experience in building robust scalable systems. Work would involve building things quickly and adapting based on market feedback while ensuring the security and quality of the codebase. If you love coding and building things excites you, we would like to talk to you.

What you will need (Skills)

• Experience building microservices and distributed systems, RESTful APIs, user interfaces
• Knowledge and will of writing unit, integration tests is a must. TDD is a plus
• Preferably a polyglot: Strong command Ruby/Golang/Java/Python
• Some exposure to infra: Deployments, CI/CD setup, security. AWS exposure is good to have
• Strong database concepts. Experience with MongoDB is a plus

What you will do

• Feature analysis, hands on development, code reviews, deployment & rollouts
• Passionately maintain coding practices, quality & good design standards
• Design and develop highly scalable, available, secure and fault tolerant systems
• Actively contribute in assessing & improving/optimizing security & infrastructure

Great to have

• Sense of ownership
• Developers who can talk product and strategy
• Experience in building scalable consumer products
• Strong opinions, loosely held

Good to have

• Interest in mentorship
• Good written communication skills
• Bangalore love

Probably not ideal if

• If you have always been right about stuff in life
• No flexibility around working hours (this doesn’t mean we work long hours but if our systems get attacked in the middle of the night, we would need you to HODORR!)

Definitely get in touch if you

• Would have started the exact same company but willing to build it together with a great team
• Find our current product unbearably slow or inadequate
• Think this company isn’t going to work as it is right now

Desired candidates must have 3-6 years of experience as NodeJs Developers.

If the candidate cannot relocate to Gurgaon, we can also provide permanent Work from home for this position.

Roles and responsibilities:

• Responsible for understanding functional and business requirements and translate them into effective code
• Provide support till deployment of code into production.
• Ownership for ensuring code optimization, problem diagnosis, and on-time delivery
• Implement solutions as per the pre-defined framework /guidelines and adherence to processes
• Finding an optimal solution for the problem statement
• Conduct peer code review.

What candidate should know about:

• Excellent hands-on experience with Node.Js, Express.Js, JavaScript
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Excellent hands-on experience with MongoDB, Mongo aggregation, MySQL
• Ability to build REST services, Authentications, MVC applications
• Excellent Object Oriented Programming skills and ability to write modular, secure, scalable, and maintainable code
• Experience with Elastic Search, Redis.
• Knowledge about AWS components (S3, EC2, Cloudfront, Redis Clusters, etc.)
• Self-learning abilities are required
• Familiarity with upcoming new technologies is a strong plus