Staff Software Engineer - Java

at One2n

Staff Software Engineer - Java

One2n

Company

Home

Staff Software Engineer - Java

at One2n

Posted by Avinash Poojari

9 - 12 yrs

₹35L - ₹50L / yr

Pune

Skills

Java

Spring Boot

Test driven development (TDD)

Domain-driven design

About the role:

We're looking for a Staff Software Engineer who will work across teams to design and implement robust solutions, mentor other engineers, and drive technical excellence. If you care about building and running reliable software systems in production, you'll like working at One2N.

You'll primarily work with our enterprise customers on One-to-N kind problems, where you:

Design, build and scale reliable software systems that handle real-world production demands
Solve technical challenges around performance bottlenecks and system scaling
Build and scale platforms for high throughput and low latency

Key responsibilities:

Lead end-to-end architecture and design for large-scale systems and technical initiatives
Create and maintain technical documentation through Architecture Design Records (ADR) and Request For Comments (RFC)
Participate in architecture reviews and help teams make better technical decisions
Drive improvements in system reliability, performance, and scalability
Tackle complex technical challenges, especially around bottlenecks and scaling
Mentor engineers through 1:1s, code reviews, and technical guidance
Design high-throughput, low-latency systems that can scale
Contribute to shared libraries, internal SDKs, and developer tooling to improve engineering efficiency

About you:

9+ years of professional programming experience with JVM languages (Java/Scala/Kotlin)
Lead by example with high-quality, maintainable, and testable code and good architecture decisions
Strong experience with:
REST API design and implementation
Spring Boot framework
Database schema modeling
Test-Driven Development (TDD)
Domain Driven Design
Experience in building microservices architectures
Strong testing skills with Unit and Integration testing. Good to have experience with Contract-driven tests.
Ability to build reusable libraries/SDKs
Brainstorm with product and business teams to prioritize the backlog
Experience with Kafka for event-driven architectures to build auto-scaling data processing pipelines
Exposure to AWS architecture, particularly with EKS and S3
Understanding architecture implications for cost, security, and performance

Leadership & collaboration:

Track record of mentoring and coaching engineers
Strong written and verbal communication skills
Ability to influence without authority

About the role:

You'll primarily work with our enterprise customers on One-to-N kind problems, where you:

Design, build and scale reliable software systems that handle real-world production demands
Solve technical challenges around performance bottlenecks and system scaling
Build and scale platforms for high throughput and low latency

Key responsibilities:

Lead end-to-end architecture and design for large-scale systems and technical initiatives
Create and maintain technical documentation through Architecture Design Records (ADR) and Request For Comments (RFC)
Participate in architecture reviews and help teams make better technical decisions
Drive improvements in system reliability, performance, and scalability
Tackle complex technical challenges, especially around bottlenecks and scaling
Mentor engineers through 1:1s, code reviews, and technical guidance
Design high-throughput, low-latency systems that can scale
Contribute to shared libraries, internal SDKs, and developer tooling to improve engineering efficiency

About you:

9+ years of professional programming experience with JVM languages (Java/Scala/Kotlin)
Lead by example with high-quality, maintainable, and testable code and good architecture decisions
Strong experience with:
REST API design and implementation
Spring Boot framework
Database schema modeling
Test-Driven Development (TDD)
Domain Driven Design
Experience in building microservices architectures
Strong testing skills with Unit and Integration testing. Good to have experience with Contract-driven tests.
Ability to build reusable libraries/SDKs
Brainstorm with product and business teams to prioritize the backlog
Experience with Kafka for event-driven architectures to build auto-scaling data processing pipelines
Exposure to AWS architecture, particularly with EKS and S3
Understanding architecture implications for cost, security, and performance

Leadership & collaboration:

Track record of mentoring and coaching engineers
Strong written and verbal communication skills
Ability to influence without authority

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About One2n

Founded :

2019

Type :

Services

Size :

20-100

Stage :

Bootstrapped

About

One2N is a boutique technology consulting firm that helps fast-growing companies build and scale high-performance backend systems. As startups evolve from MVP to tens of thousands of users, the engineering challenges change dramatically — and we specialise in solving exactly those problems. Our work ensures that scaling, reliability, and performance never become bottlenecks to growth.

With deep expertise in Site Reliability Engineering, Cloud Infrastructure & DevOps, Data Engineering, and Backend Architecture, we partner with engineering teams to design, build, and operate resilient cloud-native systems. We believe in pragmatic, impact-driven engineering — creating solutions that are robust today and adaptable for tomorrow, so teams can ship faster, stay reliable, and scale confidently.

Candid answers by the company

What does the company do?

What is the location preference of jobs?

What is the work culture like at One2N?

One2N builds robust, scalable software systems for startups ready to grow from product-market fit to large-scale adoption.

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