Lead Software Engineer - Mobile Development (Crypto Wallets) - 100% Remote

Join thrill-labs as a Lead Quality Engineer, where you will spearhead our quality assurance initiatives and ensure the highest standards of product excellence. In this remote role, you will lead a dynamic team of QA professionals, implementing best practices that enhance product reliability and performance.As a key member of our engineering team, you will co…

About UsAt Circle, we are revolutionizing online communities with our comprehensive platform designed for creators, coaches, educators, and businesses. We empower users to engage with their audiences through discussions, live streams, events, chat, courses, and seamless payment solutions, all under their own brand.As a fully remote company, we take pride in our diverse team of around 200 professionals from over 30 countries. We are committed to finding exceptional talent worldwide, providing an environment where individuals can thrive and make a meaningful impact. We prioritize results over hours worked, maintain high expectations, and foster collaboration across time zones while embracing asynchronous communication and thorough documentation.Twice annually, we gather our entire team in stunning locations around the globe for company offsites, having previously hosted events in Turkey, Portugal, Mexico, Thailand, Colombia, Italy, and Ireland, with more exciting destinations to come!Explore our Careers page to discover what it’s like to work at Circle.About the RoleWe're redefining quality assurance as an integral part of our development process. As a Senior Quality Platform Engineer, you will be responsible for designing, building, and maintaining the tools, automation, workflows, and quality infrastructure that enable our teams to deliver software rapidly, safely, and with confidence.This position uniquely combines elements of software engineering, developer experience, and quality strategy. Your role will extend beyond merely writing tests; you will create systems that ensure quality is scalable, observable, measurable, and ingrained in every phase of development.If you are passionate about empowering teams, minimizing friction, and treating quality as a product, we invite you to apply.What You'll Be DoingPlatform & ToolingDevelop and enhance the Quality Platform, including frameworks, libraries, pipelines, and integrations that facilitate high-quality delivery.Construct reusable, language-agnostic automation libraries and internal SDKs.Manage CI/CD quality gates, test orchestration, and intelligent execution logic (e.g., test selection, caching, parallelization).Implement and maintain recording/playback tools, contract testing, visual regression engines, and observability enhancements.

Role overview Trust Wallet seeks a contract Quality Engineering (QE) Engineer to help maintain and raise the quality of its cryptocurrency wallet products. This fully remote position supports teams and projects around the world. What you will do Work closely with development teams to spot software issues early in the development cycle Create and apply testing strategies that reinforce product reliability Help improve the user experience by ensuring software consistently meets quality standards About Trust Wallet Trust Wallet delivers cryptocurrency wallet solutions to users across the globe.

About the Role As a Senior Quality Assurance Engineer at sportygroup, you'll play a pivotal role in maintaining the quality of our software releases. Unlike traditional organizations, we empower our QA professionals to determine what is ready for launch. You'll work in a hybrid capacity, utilizing both manual testing and automation skills. Your involvement will span the entire development process—from gathering requirements and estimation to final testing and deployment. Please note, candidates must be located within the EU timezone to facilitate daily collaboration with our team. Our Tech Stack Programming Language: Python Database: MySQL / MongoDB DevOps Tools: AWS / Jenkins / Kubernetes Web Testing: Selenium / Playwright / Postman Mobile Testing: Appium / Android Studio / XCode Key Responsibilities Conduct comprehensive testing (black box, white box, integration, and performance) across Web and Android/iOS platforms. Document and analyze product issues, providing actionable feedback to relevant stakeholders. Create detailed test plans and test cases, along with comprehensive test reports as per feature specifications. Simulate user scenarios to ensure a seamless user experience. Engage actively in team discussions, challenging requirements and acceptance criteria for clarity and testability. Develop automated test cases for Web, Mobile, and APIs. Analyze automated tests to enhance testing efficiency. Contribute to the development of automated tests and frameworks. Enhance our Continuous Integration pipeline. Assist in automating all facets of the software engineering process. Review designs and code from peers, providing constructive feedback. Continuously enhance your own skills and mentor junior team members. Identify and implement opportunities for improving quality processes. Qualifications Minimum of 3 years of experience in software testing. Strong understanding of various testing methodologies: unit, integration, end-to-end, regression, performance, and API testing. Proven experience with manual testing of Web, Android, iOS, and APIs. Familiarity with web debugging tools and API testing tools (e.g., Chrome DevTools, Postman).

Join Newsela as a Senior Fullstack Quality Engineer and play a pivotal role in enhancing our platform's quality and performance. You'll be part of a dynamic team focused on creating a seamless experience for educators and students across various subjects. Your expertise will help us ensure that our products meet the highest standards of quality and reliability.In this role, you will collaborate closely with developers and product managers to develop comprehensive test strategies, automate testing processes, and identify areas for improvement. If you are passionate about quality assurance and eager to contribute to an innovative educational platform, we would love to hear from you!

Join the exciting journey with Nortal! Become part of our vibrant LATAM remote team: Engage with your colleagues through enjoyable activities such as coffee breaks, tech discussions, and fun games. Embrace the freedom from micromanagement! We prioritize autonomy, transparent communication, and respect for diversity as fundamental values. Your well-being is our priority: Our People Care team is dedicated to supporting you from day one, assisting with everything from time-off requests to wellness check-ins.Additionally, our Accounts Management team ensures seamless and effective client interactions, allowing you to concentrate on what you excel at.Are you ready to grow alongside us?

Why Choose Blue Coding? At Blue Coding, we take pride in connecting exceptional developers and talented professionals from across Latin America with leading companies worldwide. For over 11 years, we have empowered innovative organizations in the United States and Canada by assembling top-notch development teams and crafting outstanding products. Our diverse clientele includes large multinationals, digital marketing agencies, SaaS innovators, and specialized software consulting firms. Our team of more than 150 engineers, project managers, QA specialists, UX/UI designers, and more operates in over 10 countries throughout the Americas. As a fully remote company, we thrive on a broad spectrum of technologies, bringing expertise to every phase of the software development lifecycle.Our team is tightly knit and culturally diverse, actively participating in various initiatives worldwide, from wildlife conservation efforts to volunteering with local charities. We uphold values such as honesty, fairness, respect, efficiency, dedication, and collaboration.This position is exclusively available to candidates residing in LATAM countries.What We Are Seeking:We are on the lookout for a talented Senior QA Engineer to join our team and collaborate with one of our international clients, a company dedicated to providing life insurance solutions to the middle American market.In this role, you will spearhead the planning, organization, prioritization, and execution of testing activities throughout the complete lifecycle of applications undergoing modernization and cloud migration. Your mission is to ensure the functionality, reliability, performance, and security of systems transitioning from legacy .NET applications to modern, cloud-native solutions.The ideal candidate will have extensive experience in testing complex, distributed systems and APIs, with a strong grasp of AWS architectures, including serverless, event-driven systems, and data pipelines. You should be adept at interpreting and validating legacy .NET codebases during re-architecture planning and translating technical requirements into clear testing strategies, plans, and documented test cases.As a Senior QA Engineer, you will work closely with engineering, architecture, DevOps, and product teams, contributing not only through execution but also by defining quality standards, identifying risks early, and ensuring consistent quality across both legacy and modernized environments.

Location: Remote - Anywhere (Open to applicants located anywhere around the globe.)At Fueled, we pride ourselves on being a premier digital strategy, design, and engineering agency. Our talented team of over 300 professionals has successfully designed and developed a multitude of digital products and experiences for renowned brands such as Google, Apple, The New York Times, ESPN, Victoria’s Secret, MGM Resorts, Albertsons, and CLEAR.We view developers as engineers—innovative problem solvers who leverage their web programming skills to create smart, creative solutions to client challenges. As a Lead JavaScript Engineer at Fueled, you will play a pivotal role in crafting complex web applications that are utilized by millions worldwide. With over 12 years of pushing the boundaries of WordPress, you have the opportunity to be part of a team that is innovating the internet by crafting state-of-the-art web experiences. Your work will involve a blend of unique builds and ongoing support engagements, enhancing your technical leadership skills.

Canonical is at the forefront of open source innovation, delivering powerful software and operating systems to enterprises worldwide. Our flagship platform, Ubuntu, plays a crucial role in transformative initiatives across public cloud, data science, artificial intelligence, engineering breakthroughs, and the Internet of Things. We proudly serve top-tier public cloud providers, semiconductor manufacturers, and industry leaders across various sectors. As a pioneer in global distributed collaboration, Canonical boasts over 1,200 talented professionals across more than 75 countries, with few office-based roles. Our teams convene two to four times a year in dynamic locations worldwide to align on strategy and objectives. As a profitable, founder-led company on a growth trajectory, we are seeking engineering leaders passionate about quality, performance, and resilience in software. We value candidates with a demonstrated history of cultivating high-performing engineering teams. Our leadership roles encompass both managerial positions and Senior+ engineering roles. At Canonical, we encourage managers to maintain technical involvement, while Senior+ engineers take the lead on software projects, shaping processes and mentoring team members. Our teams are dedicated to integrating cutting-edge open source technologies, ensuring robust upgrade paths, and engineering the future of Ubuntu. Ubuntu is not merely the most widely deployed open source operating system; it is a platform that fosters innovation for millions globally. Our diverse community spans from students and hobbyists to professional engineering teams and creatives in corporate and academic settings. Key teams that drive Ubuntu’s success include: - **Foundations**: Responsible for maintaining essential software, architectures, package managers, compilers, toolchains, bootloaders, filesystems, and core utilities. - **Server**: Steering the design, development, and future of the Ubuntu Server distribution. - **Desktop**: Leading the charge on Ubuntu Desktop, our immutable desktop offerings, including Ubuntu Core Desktop, WSL, gaming technology, and a suite of modern applications built using Flutter. - **Debcrafters**: A newly formed team focused on advancing, maintaining, and ensuring the overall health of the Ubuntu archive, which is one of the largest repositories of open source software today. You will be accountable for defining your technical roadmap and guiding your team to grow as engineers, delivering meaningful work while enjoying their journey.

JOIN OUR TEAMAt bigtime, we are the innovative creators behind Big Time, an exciting multiplayer action RPG that has captured the imagination of players worldwide. We also power Open Loot, a cutting-edge Web3 gaming platform that supports hundreds of thousands of players and numerous game studios. Our ecosystem is designed for seamless player onboarding, player-owned economies, and a dynamic NFT marketplace. With over $300 million in revenue, Open Loot is thriving and expanding rapidly, featuring a growing network of partner games, token launches, and digital collectibles. Our team comprises industry veterans from Epic, Riot, Blizzard, and EA, and we are dedicated to shaping the future of gaming, where players truly own their experiences.YOUR ROLEAs our Lead Gameplay Engineer, you will spearhead a small, fully remote team dedicated to developing a captivating multiplayer action RPG. In this role, you will collaborate closely with designers and artists, guiding the engineering team to architect and implement robust gameplay systems that enhance player engagement and experience throughout the project.

Join Atticus as a Lead Infrastructure EngineerAt any moment, 16 million Americans require urgent assistance from our legal system or government due to crises in their lives. Unfortunately, many do not receive the help they need. At Atticus, we simplify the process for individuals facing health challenges or crises to access the vital support they deserve. Over the past six years, we have established ourselves as the premier platform connecting individuals with disabilities to government benefits. Additionally, we assist victims of accidents, misconduct, and violence in obtaining compensation from insurance. To date, we have empowered hundreds of thousands of individuals to secure over $10 billion in critical assistance, earning more than 17,000 five-star reviews along the way. And we are just getting started.With over $100 million raised from prominent VC firms such as Fika, Forerunner, GV (Google Ventures), and True Ventures, we are on a mission to build a category-defining business dedicated to assisting disadvantaged Americans. Following our Series C funding in April 2025, we have more than $50 million in the bank and a robust, profitable core business. Our team expanded from 151 to 210 in 2025, and we plan to grow further in 2026.Your RoleWe are seeking a Lead Infrastructure Engineer to define and implement exceptional infrastructure standards at Atticus. You will build the platforms and tools that enable our engineering teams to deliver quickly and efficiently.As our second infrastructure engineer, you will collaborate with Jereme to lay the technical groundwork for our future — articulating the vision, constructing the systems, and establishing the practices that will support Atticus for years to come.Own infrastructure as a product, serving our product engineering teams as your clients. This entails:Shaping our infrastructure roadmap — creating a clear vision for our infrastructure’s trajectory and driving initiatives to achieve it.Building security and operational foundations — establishing the groundwork for sustainable growth.Enhancing reliability — minimizing MTTR, defining SLOs, and introducing rigor in outage management.Empowering product teams — developing platforms and tools that enable them to manage their systems comprehensively.This is a senior individual contributor role, directly reporting to Toby, our VP of Engineering. You will play a critical role in shaping our infrastructure vision and strategy.

About LiatrioLiatrio is a dynamic consulting firm focused on transforming software delivery through collaboration and innovation. We strive to enhance enterprise delivery by developing cutting-edge DevOps platforms and coaching engineering and business teams throughout the process. Our partnerships span a variety of industries, from finance to healthcare. Join us to make a significant impact in fostering change across people, processes, culture, and technology!Who You AreAt Liatrio, we value team members who embody the following attributes:- Eagerness to learn and grow- Commitment to open communication and transparency- Strong collaborative spirit and willingness to share responsibilities- Skillful in navigating challenging conversations- Passion for solving complex interpersonal, technical, and business challenges- Capacity to acknowledge areas for improvement and propose solutions- Empathetic towards colleagues and clients- Enthusiastic about mentoring and fostering growth in others- Ability to thrive in ambiguous and rapidly changing environmentsWhat You Will DoWe are seeking a proactive technical leader with a passion for application development, modernizing legacy systems, cloud-native architecture, and DevOps technologies. Your goal will be to assist organizations and engineering teams in enhancing the quality and speed of their software delivery.You will bring a wealth of experience in several of the following areas, but not necessarily all. We value diverse skills and experiences that might not be listed here.Client Delivery Responsibilities- Lead technical delivery within a project or workstream under the direction of an account leader or architect- Ensure technical excellence for the assigned project or workstream- Mentor and uplift engineering teams, enhancing their capabilities and fostering a culture of continuous improvement

About the RoleAs the Team Lead for our software development team, you will be instrumental in shaping the architecture, development, and delivery of top-tier software solutions. You will guide a talented group of developers, fostering collaboration, driving technical innovation, and ensuring robust delivery outcomes. Your role will blend hands-on coding with team leadership, empowering the team to excel in a dynamic environment.Our Tech StackLanguage: Java 17Frameworks: Spring Boot (Tomcat, Netty), Spring Data, Spring CloudArchitecture: Microservices, REST API, Message QueuesDatabase: MySQL, MyBatis, MongoDBCaching: Redis (AWS ElastiCache), ElasticSearchMessage Queue: RocketMQCloud: Kubernetes, AWSMonitoring: Grafana, Prometheus, Loki, Tempo, AWS CloudWatch, OpenTracingCI/CD: Jenkins, ArgoCDKey ResponsibilitiesLead and mentor a skilled development team across Europe, cultivating a culture of high-performance collaboration.Provide technical guidance and uphold best practices in software development, code quality, and system architecture.Engage in high-level architectural and design discussions for complex software systems.Oversee the entire development lifecycle from requirements gathering to deployment, guaranteeing timely delivery of high-quality solutions.Conduct regular code reviews, offering constructive feedback to enhance team skills and productivity.Manage team performance and support career development initiatives.Promote continuous improvement within development processes, tools, and techniques.Qualifications8+ years of software development experience, particularly in backend technologies (e.g., Java, Node.js, Python, Go, etc.).2+ years in a leadership capacity, with experience in mentoring, performance evaluations, and task allocation.Strong background in software architecture and designing scalable, reliable systems.Proven hands-on experience in backend development, with an emphasis on APIs and microservices.Exceptional communication skills in English, with the ability to manage and collaborate effectively within a diverse remote team.A passion for technology and innovation, coupled with a desire to tackle complex technical challenges.

Join Our Team at SKELAR!SKELAR is a pioneering venture builder dedicated to developing international product IT companies under the principles of venture investment. Collaborating with co-founders, we assemble strong teams to launch product-focused IT businesses and achieve success in global markets.TENTENS Tech, a partner company of SKELAR, creates innovative social discovery platforms serving over 20 million users worldwide. Our pace and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Today, the TENTENS Tech team comprises over 250 individuals, each acting as a CEO in their respective roles and contributing to our collective success. We operate with the 10/10ths approach: focused on goals, asking the right questions along the way, and never settling for ‘good’—only the maximum and then some. If this resonates with you and you're ready to accelerate your career with us, let's connect!We are currently seeking a Billing Support Team Lead to elevate our performance standards.Key Responsibilities:End-to-End Ownership of Billing Quality:In this role, you will take responsibility for the quality of processes within our Quality Control direction—from daily decisions to ensuring process stability and business outcomes.Ensure accuracy in handling refunds, chargebacks, fraud cases, and risk management.Monitor compliance with processes and standards.Develop systems to maintain high-quality levels amidst increasing workloads and product changes.Quality Improvement & Process Insight:Your role will involve identifying systemic issues and root causes: where processes break down, where inefficiencies exist, and where billing specialists lack clarity or tools. You will translate this analysis into actionable steps:Conduct training sessions and workshops to enhance billing operations expertise.Update and improve criteria, guides, and workflows.Initiate optimization and preventive action projects.Automation Logic & Hands-on Optimization:A critical focus area will be building automation. You will work on auto-reply logic, triggers, macros, and conditions for auto-sorting while analyzing processes before and after automation.AI Exploration & Practical Use Cases:An essential part of this role is exploring and implementing AI solutions in billing and QC processes.

Join Tether and Help Transform the Future of Digital FinanceAt Tether, we’re not merely developing products; we’re leading a global financial transformation. Our advanced solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to effortlessly integrate reserve-backed tokens across various blockchains. By leveraging blockchain technology, Tether allows you to store, send, and receive digital tokens instantly, securely, and globally, all at a minimal cost. Our commitment to transparency underpins everything we do, ensuring trust in every transaction.Innovate with TetherTether Finance: Our innovative product suite includes the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions globally, along with groundbreaking digital asset tokenization services.But that’s just the beginning:Tether Power: Promoting sustainable growth, our energy solutions maximize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geographically diverse facilities.Tether Data: Driving advancements in AI and peer-to-peer technology, we lower infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that revolutionizes secure and private data sharing.Tether Education: Democratizing access to premier digital learning, we empower individuals to excel in the digital and gig economies, fostering global growth and opportunity.Tether Evolution: At the crossroads of technology and human potential, we are breaking barriers, crafting a future where innovation and human capabilities converge in powerful, unprecedented ways.Why Join Us?Our team is a global talent powerhouse, collaborating remotely from every corner of the world. If you’re eager to make an impact in the fintech sector, this is your chance to work alongside some of the brightest minds, pushing boundaries and setting new standards. We’ve experienced rapid growth, maintained a lean structure, and secured our position at the forefront of the industry.

Welcome to Kaizen Gaming!At Kaizen Gaming, the driving force behind Betano, we are proud to be one of the leading GameTech companies globally, actively operating in 19 diverse markets. Our mission is to harness cutting-edge technology to deliver exceptional experiences to millions of customers who rely on us for their entertainment needs.Our vibrant team consists of over 2,700 Kaizeners from more than 40 nationalities, spread across three continents.As a recognized Best Workplace in Europe and a certified Great Place to Work, we promise that no two days will be the same. Are you ready to Press Play on your potential?About the Role:As the Lead Software Engineer, you will be instrumental in guiding a talented team of software engineers in crafting and delivering top-tier software products. Your leadership will involve overseeing project execution, mentoring team members, and ensuring adherence to engineering best practices. This role seamlessly combines technical acumen with leadership and communication skills to drive both team and organizational success.

Become a Catalyst for Change in Digital Finance with TetherAt Tether, we go beyond product development; we are at the forefront of a global financial transformation. Our innovative solutions empower businesses—ranging from exchanges and wallets to payment processors and ATMs—to effortlessly integrate reserve-backed tokens across various blockchains. By leveraging the capabilities of blockchain technology, Tether allows you to store, send, and receive digital tokens instantly, securely, and globally, all while minimizing costs. Transparency is the cornerstone of our operations, fostering trust in every transaction.Innovate with TetherTether Finance: Our pioneering product suite showcases the world’s most reliable stablecoin, USDT, trusted by millions globally, coupled with groundbreaking digital asset tokenization services.But that’s merely the beginning:Tether Power: Our energy solutions are derived from optimizing surplus power for Bitcoin mining through sustainable practices in advanced, geo-diverse facilities.Tether Data: We are driving advancements in AI and peer-to-peer technologies, lowering infrastructure costs and improving global communication with innovative offerings such as KEET, our premier app that revolutionizes secure and private data sharing.Tether Education: We are democratizing access to high-quality digital education, empowering individuals to excel in the digital and gig economies, thus fostering global growth and opportunity.Tether Evolution: Positioned at the crossroads of technology and human potential, we are redefining possibilities, creating a future where innovation and human capabilities converge in extraordinary ways.Why Choose Tether?Our team is a global network of talent, collaborating remotely from every corner of the planet. If you have a passion for making a significant impact in the fintech industry, this is your opportunity to engage with some of the most brilliant minds in the field, pushing boundaries and establishing new benchmarks. We have experienced rapid growth, maintained agility, and secured our position as a leader in the market.

Become a Leader in the Future of Digital Finance with TetherAt Tether, we are not merely developing products; we are at the forefront of a global financial revolution. Our state-of-the-art solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to effortlessly integrate reserve-backed tokens across multiple blockchains. By leveraging the power of blockchain technology, Tether allows you to store, send, and receive digital tokens instantaneously, securely, and globally, all while minimizing costs. Transparency is fundamental to our mission, ensuring trust in every transaction.Innovate with TetherTether Finance: Our innovative product suite includes the world’s most trusted stablecoin, USDT, utilized by hundreds of millions globally, alongside pioneering services in digital asset tokenization.This is just the beginning:Tether Power: We are dedicated to sustainable growth, optimizing excess energy for Bitcoin mining through eco-friendly practices in advanced, geo-diverse facilities.Tether Data: We are driving advancements in AI and peer-to-peer technology, reducing infrastructure costs and enhancing global communications with groundbreaking solutions such as KEET, our flagship application that transforms secure and private data sharing.Tether Education: We democratize access to premier digital learning, empowering individuals to excel in the digital and gig economies, fostering global growth and opportunities.Tether Evolution: At the crossroads of technology and human potential, we are expanding the limits of what is feasible, creating a future where innovation and human capabilities converge in powerful, unprecedented ways.Why Join Our Team?Our team is a global talent powerhouse, collaborating remotely from every corner of the world. If you are eager to leave your mark in the fintech space, this is your chance to work alongside some of the brightest minds, pushing boundaries and establishing new standards. We have experienced rapid growth while maintaining a lean structure and securing our position as a leader in the industry.

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products; we’re at the forefront of a global financial revolution. Our innovative solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across diverse blockchains. Leveraging blockchain technology, Tether enables instant, secure, and global transactions of digital tokens, all at a significantly reduced cost. Transparency is the cornerstone of our operations, ensuring trust in every transaction.Innovate with TetherTether Finance: Our cutting-edge product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions globally, alongside pioneering digital asset tokenization services.But that’s just the beginning:Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining through eco-friendly practices in state-of-the-art, geo-diverse facilities.Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we lower infrastructure costs and enhance global communications through innovative solutions like KEET, our flagship app that redefines secure and private data sharing.Tether Education: Democratizing access to premier digital learning, we empower individuals to excel in the digital and gig economies, fostering global growth and opportunity.Tether Evolution: At the nexus of technology and human potential, we are redefining possibilities, crafting a future where innovation and human capabilities converge in unprecedented ways.Why Join Us?Our team is a global powerhouse of talent, working remotely from all corners of the world. If you are passionate about making a significant impact in the fintech sector, this is your chance to collaborate with some of the brightest minds, pushing boundaries and establishing new standards. We’ve experienced rapid growth, maintained agility, and secured our position as a leader in the industry.