Lead/Senior Software Engineer - Backend (remote) at Founded in 2018,mission to make crypto accessible to everyon · Remote only · 3 - 14 years · ₹20L - ₹40L / yr · Remote only · Posted 5 Oct 2021

Lead/Senior Software Engineer - Backend (remote)
at Founded in 2018,mission to make crypto accessible to everyon
-Design and build advanced applications from scratch keeping scalability and performance in mind.
-You’ll be working on our P2P and cryptocurrency exchange platforms to build more features around it.
-Collaborating with various stakeholders to determine software requirements
being a financial product, you’ll be involved in building tools to make our user’s data more secure.
-You will be working on blockchain technologies
-You will help maintain code quality and organization.
-Should be able to work with juniors; help and guide them as needed.
-We expect you to learn about new software technologies, and proactively look for ways to make them better.
#You'll be a good fit if:
-You’ve got 3+ years of development experience and an expert in the Ruby and Rails framework.
-You’re a Hands-on expert who can code, architect/design systems, and understand building highly available and scalable microservices on cloud infrastructure.
-You have a very good understanding of Containers and Container Orchestration Technology such as Docker / Kubernetes and AWS Cloud Platform exposure.
-You’ve hands-on experience in using DevOps tools such as Newrelic, Jenkins, Grafana, ELK, etc
-You’re an expert in writing background tasks, test-driven development.
-You enjoy collaborating with the front-end developers, DevOps, and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience.
-You’re committed to quality, and your code solves more problems than it creates ;)

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We’re seeking a highly skilled, execution-focused Senior Backend Engineer with a minimum of 5 years of experience to join our team. This role demands hands-on expertise in building and scaling distributed systems, strong proficiency in Java, and deep knowledge of cloud-native infrastructure. You will be expected to design robust backend services, optimize performance across storage and caching layers, and enable seamless integrations using modern messaging and CI/CD pipelines.
You’ll be working in a high-scale, high-impact environment where reliability, speed, and efficiency are paramount. If you enjoy solving complex engineering challenges and have a passion for distributed systems, this is the right role for you.
Responsibilities—
- Design, develop, and maintain distributed backend systems at scale.
- Write high-performance, production-grade code in Java.
- Architect and optimize storage systems, ensuring efficient query performance and scalable data models.
- Implement caching strategies to reduce latency and improve system throughput.
- Build and manage services leveraging AWS cloud infrastructure.
- Develop resilient messaging pipelines using Kafka (or equivalent) for real-time data processing.
- Define and streamline CI/CD pipelines, ensuring rapid and reliable deployment cycles.
- Collaborate with product managers, frontend engineers, and DevOps to deliver end-to-end solutions.
- Monitor system performance, identify bottlenecks, and apply proactive fixes.
- Drive best practices in software engineering, testing, and code reviews.
Requirements—
- 5+ years of experience in backend engineering, with deep hands-on coding experience.
- Strong proficiency in Java and familiarity with modern frameworks.
- Proven track record in building scalable distributed systems.
- Hands-on expertise with AWS services (e.g., EC2, S3, Lambda, DynamoDB, RDS).
- Solid understanding of messaging systems like Kafka, RabbitMQ, or similar.
- Strong grasp of query performance optimization and storage system design.
- Experience with caching solutions (Redis, Memcached, etc.).
- Familiarity with CI/CD tools (Jenkins, GitHub Actions, GitLab CI, etc.).
- Excellent problem-solving skills and ability to thrive in fast-paced environments.
- Strong communication and collaboration skills, with a proactive mindset.
Benefits—
- Best in class salary: We hire only the best, and we pay accordingly.
- Proximity Talks: Meet other designers, engineers, and product geeks — and learn from experts in the field.
- Keep on learning with a world-class team: Work with the best in the field, challenge yourself constantly, and learn something new every day.
About us—
Proximity is the trusted technology, design, and consulting partner for some of the biggest Sports, Media, and Entertainment companies in the world. We’re headquartered in San Francisco and have offices in Palo Alto, Dubai, Mumbai, and Bangalore.
Since 2019, Proximity has built high-impact, scalable products used by millions of users every day. Today, we are a global team of engineers, designers, product managers, and experts solving complex problems and building cutting-edge technology at scale.
The AI Specialist candidate should have the following skills:
Must-have:
- Proficiency in Java
- Experience with LLMs, prompt engineering, and RAG architectures
- Familiarity with AWS cloud platform
- Strong analytical and problem-solving skills
- Ability to communicate complex technical concepts to non-technical stakeholders
We are looking for an enthusiastic developer with a strong understanding of core Ruby
and Rails framework along with PostgreSQL database. Someone who is passionate
about coding and loves to work in an ongoing challenging environment. You will be part
of a talented software team. You have to consistently deliver in a fast paced
environment and should be more than willing to build software that people love to use.
Key Responsibilities
The individual role that you’ll play in our team:
● Developing large multi-tenant applications in Rails.
● Understanding Rails best practices and religiously introducing those to our
codebase.
● Knowledge on how to do effective Refactoring.
● Ability to write unit tests and following those practices religiously.
● Working closely with the Product managers and UX team.
● Helping QAs to write automated integration tests.
● Staying up-to-date with current and future Backend technologies and
architectures.
Read the ‘Skills and Experience’ section, it is not the usual yada yada, you’ll be
asked specific questions on these.
Skills and Experience
● Ruby on Rails architecture best practices
● Knowledge on the latest versions on ROR
● Strong OOP knowledge in Ruby.
● Asynchronous Networking in Ruby
● Designing RESTFul HTTP APIs using JSON-Schema or JSON API (jsonapi.org).
● Ability to architect and develop API only backend
● Experience in using ActiveRecordSerializer
● Understanding O-Auth2 or JWT (Json Web Token) authentication mechanisms.
● How to use RSpec
● Rails Security Best Practices
● PostgreSQL and Rails.
● SQL concepts like Joins, Relationships etc.
● Understanding DB Partition strategies.
● Knowledge about refactoring ActiveRecord Models (read this - “7 Patterns to
Refactor Fat ActiveRecord Models”).
● Understanding scaling strategies for a high-traffic Rails applications (2 million+
requests a day).
● Background Job processing using Redis and Sidekiq
● Experience in using Amazon Web Services (AWS) tools.
● Writing automated Deployment Scripts using Capistrano, Ansible etc.
● Sending emails in Rails
● Knowledge in Linux and Git is mandatory
Optional Skills
● Knowledge in using Chef or Puppet
● Ability to do basic DevOps like setting up a Linux server.
● Websocket communication in Rails 5.
● Node.js
● JRuby
● Responsible for developing high end web applications in various areas related to
SAAS (Software as a service)
● Developing ideas for new programs, products, or features by monitoring industry
developments and trends
● Collaborating with the front-end developers and other team members to establish
objectives and design more functional, cohesive codes to enhance the user
experience
● Liaise with developers, designers and customer success teams to identify new
features
● Should have experience to integrate & customize third party plugins
● Knowledge of SaaS or e-commerce industry will be preferred
Required Skills:
● 5-7 years’ experience as a Sr. Web Developer in developing web applications
● Strong experience in PHP, MySQL, Laravel, Rest APIs, Ajax & jQuery
● Good exposure in Payment Gateway process
● Should have good exposure in Server Setup, AWS Console, Digital Ocean,
Handling DNS and Linux/Ubuntu command line
● Fluency or good understanding of Nodejs & MongoDB will be preferred
● In-depth understanding of the entire web development process such as design,
development and deployment
● Familiarity with front-end languages like HTML, JavaScript and CSS
● Strong understanding of the web development and programming techniques and tools
● Focus on efficiency, user experience, and process improvement
● Excellent analytical and time management skills
● Excellent communication and problem-solving attitude
● Familiarity with SaaS Products is a plus
● Degree from IT/Computer Science background is preferred










