GK8 is seeking a Senior Mobile Developer to join our front-end team. In this role, you will work closely with product managers and UI/UX designers to develop the next generation of GK8’s mobile applications for both iOS and Android. You will leverage the latest mobile frameworks and technologies to ensure high performance, scalability, and a seamless user experience. This position requires strong technical expertise, problem-solving skills, and a passion for delivering top-tier mobile applications.

Responsibilities

• Develop and enhance GK8’s mobile applications for iOS and Android.
• Ensure the best performance and user experience of our applications.
• Stay up to date with the latest mobile frameworks and technologies.
• Implement best practices in mobile development, including security and performance optimization.
• Work in an agile environment to meet project goals and timelines.

• 5+ years of experience in native mobile application development for iOS and Android platforms.
• Proficiency in programming languages such as Swift, Kotlin, and Java.
• Strong understanding of mobile development best practices, design patterns, and architectures.
• A passion for developing a pixel-perfect user experience.
• Excellent problem-solving, analytical, and communication skills.

• Experience with SwiftUI and/or Jetpack Compose.
• Experience developing using KMM (Kotlin Multiplatform Mobile).
• Familiarity with cryptocurrencies and blockchain technology.

Apply Now:

About Us

Chorus One is one of the leading operators of infrastructure for Proof-of-Stake networks and decentralized protocols. Tens of thousands of retail customers and institutions are staking billions in assets through our infrastructure helping to secure protocols and earn rewards. Our mission is to increase freedom and speed of innovation through decentralized technologies.

We are a diverse team of 70+ people distributed all over the globe. We value radical transparency, striving for excellence and improvement while treating each other with kindness and generosity. If this sounds like you, we’d love to hear from you.

Position Overview:

As a senior software engineer, you will join one of our engineering teams to assist in building and maintaining tools and automation to support our validator operations. We take the upstream node software from projects like Ethereum, Solana, Cosmos, or Avalanche; compile it; run it on one of our servers; and then make sure it is reliable and secure, monitor it, and keep it up to date. We do this for more than 60 blockchain networks, which means that it is not feasible to do all of this by hand. Instead, we build automation. Some of the things we do:

• Contribute to upstream software to improve observability, and build monitoring tools from scratch where none exist. The teams that build the node software are not the teams that operate this software at scale, and as such, observability is often not a first priority. We develop our own tools for on-chain and off-chain monitoring, both for short-term metrics (to alert on) and long-term metrics to measure our performance, and to support optimisation decisions.
• Build tools to track and manage our fleet of servers. We work mostly with bare-metal servers across multiple providers. This means that no vendor-specific portal is going to give us a complete overview of our infrastructure, instead we have an in-house tool that integrates with vendor APIs and gives us a central overview.
• Automate machine provisioning. Instead of working with 10+ cloud and bare metal providers’ flavor of installing Ubuntu, we build our own installer that is uniform across our infrastructure.
• Track and automate builds. Each of the 60+ networks we operate regularly releases updates. It would be tedious to manually git pull && make for every release, instead we have automation watching for new releases that automatically builds them and registers them in our package registry.
• Automate updates and failover. When we have a new package, we still need to roll it out to our fleet and restart any nodes, in a controlled manner and without downtime. For validating nodes, we also need to fail over before we restart them, and confirm the new node is healthy. To automate this, we need to have 100% confidence in our tooling, because a mistake here can lead to double-signing, which incurs a financial penalty.
• Automate snapshot creation and storage. Blockchains node software is stateful in nature: the chains are often terabytes in size. While it is possible for new nodes to sync from the p2p network, this can take days to weeks, which means it is not a suitable method when we move workloads between machines. We automate taking snapshots of this data, so we can be more flexible about what runs where, without compromising on security.

Our internal tooling:

It is written in a mix of Rust, Python, Go, and a bit of TypeScript. We use Postgres as our database of choice. We deploy our code either directly onto Ubuntu hosts, running under systemd or in Docker containers, and we also have a Kubernetes cluster running various stateless applications. Due to the diverse nature of the software we run, we also have to occasionally dive into codebases written in C, C++, OCaml, or TypeScript.

You can learn more about our approach to operating nodes in our Network Handbook.

Key Responsibilities

• Design and develop new features. Discuss with internal stakeholders to clarify how our next feature should look, discuss with fellow engineers how it should be implemented, and then drive implementation to completion.
• Support and collaborate. Review and discuss engineering designs, review code, help fellow engineers, and mentor them on a technical level.
• Innovation and continuous improvement. Seek to simplify, optimize, and secure our staking services and systems.
• Take part in on-call rotation approximately 2 days per month. You will be responsible for automation that manages our validators and infrastructure, including its uptime and incident response.

Job requirements

What we are looking for:

• 5+ years experience as a Software Engineer.
• Experience with operating and maintaining server-side software in production.
• Deep understanding of at least one compiled statically typed programming language such as Rust, Go, Kotlin, C++, or Haskell.
• Experience with at least one scripting language such as Python.
• Experience using SQL databases, preferably PostgreSQL.
• Strong communication skills and ownership to drive new features independently.
• Interest in blockchain technology, in particular distributed systems and consensus algorithms.
• Affinity with infrastructure and the lower levels of Linux userspace.
• You are able to work in the following time zone: Switzerland ± 6 hours.

What We Offer:

🌱 Growth & Learning

We’re committed to your development! Benefit from an annual 3,000 CHF learning budget that goes beyond just conferences—supporting your physical, emotional, and mental well-being too. Attend up to two conferences a year to dive deeper into the Web3 space and connect with the community. Plus, jumpstart your crypto journey with our $1,000 Crypto Starter Kit to explore and engage with cryptocurrencies hands-on.

🤝 Collaborative Culture

Collaboration is woven into our DNA. We thrive in multiplayer settings, ensuring every voice contributes to our mission. Connect across teams through our buddy programs, regular virtual coffee chats, and biannual retreats, which offer unparalleled opportunities to build stronger relationships while tackling some of the industry’s most exciting challenges.

✈️ Retreats in Iconic Destinations

Twice a year, we bring the entire team together for all-expenses-paid retreats in inspiring locations. Past retreats have taken us to Kenya, the USA, South Korea, Switzerland, Spain, Turkey, Thailand, Dubai and Japan. Our next stop? Budapest, Hungary! These retreats are designed to recharge, connect, and spark innovation.

🏡 Work From Anywhere

Embrace remote flexibility that empowers you to work from anywhere in the world. Prefer a coworking space? We’ve got you covered with a 500 CHF/month coworking budget. And for those growing their families, enjoy paid parental leave to ensure your personal and professional lives align seamlessly.

🗣️ Radical Transparency

We practice radical candor, fostering an environment of open, honest feedback that helps us grow individually and as a team. Expect a culture where learning from each other is not just encouraged—it’s celebrated.

💸 Compensation & Equity

We offer a competitive fixed salary in your preferred local currency or stable coins, complemented by stock options, giving you a stake in the exciting future we’re building together.

💼 Employment

We offer flexibility to suit your individual needs. With the ability to provide local employment in over 150 countries, you’ll have access to local benefits tailored to your region. Prefer contractor status instead? That’s an option too. During the offer, we work with you to determine the best arrangement, ensuring your experience aligns with your personal and professional preferences.

✨ Curious to see what life at Chorus One is really like? Check out these videos for a behind-the-scenes look:

• Culture at Chorus One

What is Kick? Kick is a global live-streaming platform for all types of entertainment content. Our mission is to empower content creators, event organisers, and content rights holders by providing them with the tools and revenue-sharing structures they need to monetise and grow their audiences.  As a result, we are quickly becoming a household name, attracting top-tier creators and expanding rapidly worldwide. You may have seen us in the UFC octagon or on the side of an F1 car, as we seize every opportunity that comes our way.  We’re the newest players in a well-established industry, and we’ve already made a significant impact. We have plenty more to achieve. We’re at the beginning of an exciting journey and are looking for brilliant minds to join us. Engineering at Kick  Joining Kick at this point in our journey is a unique, once-in-a-lifetime opportunity. We’re rapidly scaling and establishing ourselves globally while simultaneously innovating and pushing the limits of our industry. That means we’re part scale-up, part start-up. Kick is taking on the global players in the live-streaming industry and making an impact. As an engineer working at Kick, you will be given interesting and challenging engineering problems to solve, have ultimate ownership of your work, and be responsible for a product used by millions of people every day. There will be greenfield opportunities for new services, as well as scale-up and stabilisation opportunities for our established services. Everything you build will be used by millions of people the day you deploy it. Within our engineering organisation, we foster a continuous learning environment, constantly pushing the boundaries of large-scale software design and development. Our culture revolves around fostering growth, nurturing learning, and upholding excellence in engineering, ensuring we consistently set the benchmark for engineering mastery. Why join us? Are you a passionate and ambitious Mobile software engineer ready to dive into an environment that fosters innovation, continuous learning, and professional growth? We're seeking talented individuals who are eager to tackle complex problems, build scalable solutions, and collaborate with some of the finest engineers in the entertainment industry.

Complex Projects, Creative Solutions: Dive into intricate projects that challenge and push boundaries. Solve complex technical puzzles and craft scalable solutions. Accelerate Your Growth: Access mentorship, training, and hands-on experiences to level up your skills. Learn from industry experts and gain expertise in scaling software. Collaborate with Industry Leaders: Work alongside exceptional engineers, exchanging ideas and driving innovation forward through collaboration. Caring Culture, Career Development: We deeply care about your career. Our culture prioritizes your growth with tailored learning programs and mentorship. Embrace Challenges, Celebrate Success: Take on challenges, learn from failures, and celebrate achievements together. Shape the Future: Your contributions will shape the future of entertainment.

Key Responsibilities:

Write maintainable, efficient, and scalable code, rigorously adhering to Android coding standards and best practice Optimize existing systems for performance, scalability, and reliability, identifying and resolving bottlenecks and inefficiencies Take full ownership of assigned projects or components, proactively identifying areas for improvement and leading technical discussions to enhance solutions Provide guidance to junior engineers, sharing expertise to foster a collaborative and high-performing team environment Participate actively in architectural and design decisions, demonstrating a strong grasp of software design principles and scalability Seek out growth opportunities to deepen technical expertise and keep the team informed of emerging best practices

Minimum Qualifications:

Bachelor's/Master's degree in Computer Science or equivalent practical experience. 6+ years of hands-on experience in Mobile Software Engineering, focusing on scalable architecture and development. Proficiency in Kotlin or Java, developing for the Android Platform and frameworks relevant to the role Prior experience in the complete Android Development lifecycle, from design, testing, signing, releasing, fixing and beyond Familiarity with RESTful APIs to connect Android applications to back-end services Understanding of Android’s design principles and interface guidelines Demonstrated experience providing technical leadership, mentoring, and guiding teams. Strong problem-solving skills and ability to tackle complex technical challenges. Excellent communication skills for effective collaboration across teams and stakeholders. Strong problem-solving skills and the ability to thrive in a fast-paced, dynamic environment.

Preferred Qualifications 

Experience building large-scale Mobile applications Experience in building custom components, Video Players and animations Demonstrated ability to lead independent projects Knowledge in continuous integration as an Android developer Experience debugging production applications and managing incidents Is a quick learner and can pick up new technologies quickly

Apply Now:

About Us

Chorus One is one of the leading operators of infrastructure for Proof-of-Stake networks and decentralized protocols. Tens of thousands of retail customers and institutions are staking billions in assets through our infrastructure helping to secure protocols and earn rewards. Our mission is to increase freedom and speed of innovation through decentralized technologies.

We are a diverse team of 70+ people distributed all over the globe. We value radical transparency, striving for excellence and improvement while treating each other with kindness and generosity. If this sounds like you, we’d love to hear from you.

Position Overview

As a software engineer, you will join our product engineering team to help build our customer-facing offerings. Projects you might work on are our Opus Pool Ethereum staking portal, the Chorus One SDK that can generate staking transactions for many of the networks we support, gathering rewards data, and whatever we need to offer best-in-class solutions for the parties who want to stake with us. You will also work closely with our platforms engineering teams who operate our validator nodes.

Our Tech Stack

The software we develop at Chorus One, both internal and external-facing, is written in various languages, depending on what is most suitable for the project. We have code in Rust, Go, Python, and TypeScript, and we occasionally have to dive into codebases of the blockchains we work with, so we deal with code written in Rust, C++, OCaml, TypeScript, and a host of smart contract languages. Our database of choice is Postgres, and we deploy our applications either directly on top of Ubuntu, or on Kubernetes.

Key Responsibilities

• Design and develop new features, Understand the needs of our customers, identify solutions, discuss with fellow engineers how they should be implemented, and drive the implementation to completion.
• Support and collaborate. Review and discuss engineering designs, review code, help fellow engineers, and mentor them on a technical level.
• Innovation and continuous improvement. Seek to simplify, optimize, and secure our staking services and systems.

Job requirements

What we are looking for:

• 4+ years experience as a software engineer.
• Having worked on a user-facing product before, especially operating and maintaining server-side software in production.
• Deep understanding of at least one compiled statically typed programming language such as Rust, Go, or Kotlin.
• Experience with at least one gradually typed dynamic language, such as Python + Mypy or TypeScript.
• Experience using SQL databases, preferably PostgreSQL.
• Strong communication skills and ownership to drive new features independently.
• Interest in blockchain technology.
• Good understanding of security principles (threat models, cryptographic primitives at a high level, etc.)

Our Offer

• Autonomy and ownership in a friendly and supportive work environment and the opportunity for rapid growth.
• Competitive fixed compensation (USD 100k - 140k) + equity.
• All-expense paid biannually team retreats at various destinations (Coronavirus permitting). Past retreats took place in Egypt, Serbia, Kenya, USA, South Korea, and Dubai.
• Remote, but not alone. We are a strong global collaborative environment.
• Remote working budget (Laptop, co-working space, etc)
• Personal development budget
• Gather experience and build your network in the vibrant crypto ecosystem.
• Learn about state-of-the-art protocols that lay the foundation for an open, transparent, and programmable financial system.