Kotlin Backend Engineer Job at Ryz Labs

Mid-level Backend Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

Brazil

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
3+ years of experience working at a similar level in a mature Engineering team
Technical expertise with at least one programming language (Kotlin, Ruby)
Experience with relational databases
Proven track record of demonstrable impact
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions to business problems and contribute to architectural vision
Ship working code primarily with React, Kotlin microservices, Postgres, Ruby on Rails, and Python
Deploy and iterate using CI/CD tools like CircleCI and Spinnaker
Build competency through learning and development
Maintenance and troubleshooting of services

What we offer

L&D budget to fast-track development of specific technical competencies

Fulltime

Software Engineer (Backend)

We’re looking for a Backend Engineer to join our Growth Engineering team, which ...

Location

Mexico , Mexico City

Salary:

Not provided

EarnIn

Expiration Date

Until further notice

Requirements

3+ years of backend software engineering experience, ideally in distributed or microservice-based systems
Strong fundamentals in service architecture and API design, with experience building reliable, performant systems at scale
Proficiency in at least one modern backend language, such as Kotlin, Java, C#, or Python, and openness to learning new technologies as needed
Experience with SQL databases (e.g., PostgreSQL, MySQL) and familiarity with NoSQL systems is a plus
Familiarity with event-driven patterns (queues, messaging, background jobs) and REST/gRPC services
Collaborative mindset, with experience working alongside product, data, and design teams to deliver user-facing impact
Strong testing and debugging skills, with experience maintaining high-quality services in production
Excellent communication and problem-solving abilities, with a proactive approach to learning and iteration

Job Responsibility

Design and implement backend features that drive EarnIn’s Growth funnel — from onboarding and cross-sell to retention and engagement
Build and maintain scalable, event-driven microservices that enable experimentation, real-time personalization, and data-driven decision-making
Collaborate with Product, Data, and Marketing teams to translate growth hypotheses into technical solutions and run experiments that move key metrics
Ensure system performance, scalability, and reliability, especially under high throughput and real-time conditions
Develop automation and testing frameworks to maintain velocity and confidence in continuous integration and deployment pipelines
Debug and resolve production issues, working across multiple service layers to maintain system stability and uptime
Proactively identify opportunities to generalize solutions, building reusable infrastructure and APIs that accelerate team development
Partner with mobile, web, and analytics teams to ensure cohesive end-to-end experiences across platforms

What we offer

healthcare
internet and cell phone reimbursement
a learning and development stipend
potential opportunities to travel to our headquarters in Mountain View

Senior Backend Software Engineer

Atlassian is looking for Engineers to join one of our Sydney engineering teams (...

Location

Australia , Sydney

Salary:

Not provided

Atlassian

Expiration Date

Until further notice

Requirements

Expert-level experience with one or more prominent languages such as Java, Kotlin, Golang, Python, C#, C/C++, or Ruby is required
Highly-trusted knowledge in at least one domain and working knowledge in multiple tech domains
Passion for collaborating with and mentoring junior members of the team
Considers the customer impact when making technical decisions
A real appetite for learning and growing, both as an individual and teammate

Job Responsibility

Drive large, complex projects autonomously, from technical design to launch
Determine plans-of-attack on large projects
Tackle complex architecture challenges, apply architectural standards and start using them on new projects
Lead code reviews & documentation as well as take on complex bug fixes, especially on high-risk problems
Be an example for thorough, meaningful code reviews
Partner across engineering teams to tackle company-wide initiatives spanning multiple projects
Transfer your depth of knowledge from your current language to excel as a Java developer
Mentor more junior members

What we offer

Health and wellbeing resources
Paid volunteer days

Senior Backend Engineer

We’re looking for a Senior Kotlin Engineer to join our HQ Tech team and help des...

Location

Spain , Madrid

Salary:

Not provided

InStaff

Expiration Date

Until further notice

Requirements

5+ years of experience in backend development using Kotlin or Java
Strong experience building and maintaining distributed systems at scale (1M+ users)
Proven track record delivering customer-facing applications
Experience owning the full lifecycle of a feature: design, coding, testing, deployment, and monitoring
Solid understanding of relational databases, transactions, and query optimization
Hands-on experience with monitoring systems — each team owns their product in production
A pragmatic problem-solver who enjoys tackling complex technical challenges

Job Responsibility

Design and implement scalable services that power Job&Talent’s staffing and workforce management platform
Collaborate with cross-functional product teams to deliver new features across our backend systems
Lead the development of critical components and drive architectural discussions
Mentor engineers and advocate for best practices in Kotlin development, testing, and observability
Continuously optimize performance, reliability, and scalability across our systems
Take part in end-to-end ownership — from design to deployment and monitoring in production

What we offer

competitive pay
meaningful benefits
the opportunity to shape what work looks like for millions around the globe

Fulltime

Software Engineer (Kotlin), Institutional

We are looking to hire a Software Engineer to join our Institutional team in our...

Location

United Kingdom , London

Salary:

Not provided

Blockchain

Expiration Date

Until further notice

Requirements

Strong hands-on experience with Kotlin in backend and distributed systems development
Proven expertise building scalable APIs, microservices, and backend platforms for complex financial or data-intensive applications
Familiarity with cloud deployments, and service-oriented architectures
Knowledge of messaging and streaming technologies (NATS, Kafka, or similar)
Solid understanding of algorithms, data structures, databases, and distributed systems
Knowledge of ledger systems is a strong plus
Passion for solving challenging technical and financial problems with clean, maintainable code
Commitment to quality-driven engineering, with a strong focus on testing (unit, integration, performance, and failure recovery)
Experience in fintech, trading, or wealth management platforms is a strong advantage

Job Responsibility

Design and implement scalable, secure, and high-performance backend services in Java/Kotlin that power client-facing applications for trading, custody, and wealth management
Build robust APIs and microservices to support advanced dashboards, analytics tools, and mobile experiences
Collaborate closely with front-end engineers, product managers, and designers to deliver seamless, intuitive experiences for sophisticated investors
Architect solutions for portfolio management, trade execution, settlement, reporting, and analytics tailored to institutional and private clients
Optimize backend systems for low latency, high throughput, and fault tolerance
Integrate security best practices and advanced encryption to safeguard sensitive financial data
Continuously improve backend performance, reliability, and development workflows

What we offer

Full-time salary based on experience and meaningful equity in an industry-leading company
Work from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year
ClassPass
Budgets for learning & professional development
Unlimited vacation policy
Apple equipment
The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field
Flexible work culture

Fulltime

Senior Backend Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

Brazil

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
Experience working at a similar level in a mature Engineering team
Technical expertise with Java or Kotlin with Springboot
Experience with relational databases
Proven track record of demonstrable impact
Highly driven and proactive
Meticulous with obsessive attention to detail
English language proficiency (oral and written)
Current permanent residence in Brazil
Resume submitted in English

Job Responsibility

Design technical solutions to business problems
Ship working code (React frontend, Kotlin microservices with Postgres backend, some Ruby on Rails)
Deploy and iterate using CircleCI and Spinnaker for CI/CD
Build competency and use L&D budget
Maintenance and troubleshooting of services

What we offer

L&D budget for technical competencies

Fulltime

Mid-level Backend Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

United Kingdom , London

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or alternative route)
3+ years of experience working at a similar level in a mature Engineering team
Technical expertise with Java or Kotlin
Experience with relational databases
Proven track record of demonstrable impact in previous roles
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions and contribute to architectural vision
Ship working code primarily with React on frontend and Kotlin microservices with Postgres on backend
Deploy and iterate using CircleCI and Spinnaker for CI/CD
Build competency and learn quickly
Maintenance and troubleshooting of services

What we offer

L&D budget to fast-track development of specific technical competencies

Fulltime

Staff Backend Engineer

Inworld recently launched an exciting new platform for consumer AI applications,...

Location

United States , Mountain View, California

Salary:

180000.00 - 280000.00 USD / Year

Inworld AI

Expiration Date

Until further notice

Requirements

Excellent programming skills and experience in a statically typed backend programming language, preferably Go, Kotlin, Java or Rust
Experience developing and deploying cloud-based services to at least hundreds of qps (preferably more)
Experience with relational databases (PostgreSQL or MySQL)
Hands-on experience with caching (Redis or Memcached), pubsub/queues, data pipelines (Flink, Beam), and Cloud storage
Excellent verbal and written communication skills, can collaborate and coordinate with other roles and engineer with ease, trusted and well-regarded teammate

Job Responsibility

Establish significant scope: Collaborate with the PMs, engineers and leads to determine the biggest product needs to focus on now
Operate with technical autonomy: You have considerable leeway to suggest how to address a given focus area, including bringing in new technical dependencies or standards where it’s the best choice
Collaborate, execute, deliver: This is the core of the building loop. We aim to optimize for both speed and quality, despite it being decidedly non-obvious how to manage that tradeoff exceptionally well
Reflect and drive improvements: Especially as a Staff Engineer, advocate for and realize system improvements, both related to and independent of key features

What we offer

equity and benefits

Fulltime

Kotlin Backend Engineer

Ryz Labs

Location:

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
December 11, 2025

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Additional Information:

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