Senior Application Modernization Engineer

Join Proof, the pioneering identity-assured transaction management platform, as a Senior Mobile Application Engineer. In this pivotal role, you will be responsible for designing, developing, and maintaining our mobile applications, enhancing user experience, and ensuring the highest quality standards. Your expertise will contribute to our mission of digitizi…

At Assured, we're on a transformative journey to revolutionize the insurance industry by modernizing claims processing. This often-overlooked aspect of insurance, characterized by outdated manual methods, costs the industry billions annually. We know there’s a better way. As a leading provider of software solutions for large insurers, we equip them with innovative tools ranging from user-friendly claim-filing software to advanced backend fraud detection systems. Our platform is the driving force behind claims processing for some of the world’s largest insurers. The challenges we tackle are multifaceted, from crafting digital experiences that provide reassurance to claimants in their times of need to implementing sophisticated machine learning-driven decision-making processes affecting billions in claims. Life at Assured is dynamic, collaborative, and fulfilling. We invite you to join us in redefining the future of developer experience at Assured. We are seeking a **Senior Application Platform Engineer** who is enthusiastic about creating scalable, secure, and sophisticated systems that empower teams to operate swiftly and confidently.

COMPANYAt 0x, we are on a mission to "Create a Tokenized World Where All Forms of Value Can Flow Freely." We empower web3 developers with an intuitive suite of APIs designed to facilitate faster trading, improved pricing, and an exceptional user experience.Since our inception in 2017, we have successfully processed over 211 million transactions and managed more than $180 billion in trading volume. Our platform supports various applications including Matcha, Coinbase Wallet, Robinhood Wallet, Phantom, Rainbow, DefiLlama, MetaMask, Zerion, Zapper, and many others. Our esteemed investors include Greylock Partners, Pantera Capital, and Jump Crypto.Joining 0x means becoming part of a seasoned team of crypto innovators who prioritize code quality, teamwork, and a culture of continuous learning.About Matcha MobileMatcha, our decentralized exchange aggregator, enables users to trade across multiple blockchains seamlessly, ensuring the best prices through a singular, user-friendly interface.We are excited to announce the development of Matcha Mobile, a new React Native application that aims to make decentralized trading on mobile devices as straightforward as on the web.In this pivotal engineering role, you will take charge of the architecture, performance, and overall product experience from inception to launch.You will work closely with design, backend, and product teams to shape the mobile trading experience for users.If you have a passion for React Native, elegant UI design, robust system architecture, and the world of cryptocurrency, this opportunity allows you to create a product that will be utilized by millions.What You’ll DoArchitect and develop Matcha’s new React Native application for both iOS and Android from the ground up.Design scalable architecture, manage state efficiently, and establish in-app infrastructure (CI/CD, telemetry, feature flags).Deliver a high-performance mobile user experience with responsive interfaces, fluid gestures, rapid load times, and secure wallet integrations.Collaborate intimately with design and product teams to prototype, iterate, and deploy features swiftly and securely.Write clean, modern TypeScript and React Native code, ensuring proper typing, linting, and comprehensive testing coverage (Jest, Detox/Maestro).Help cultivate the mobile engineering culture through code reviews, pair programming, testing best practices, and ongoing performance optimization.Engage in open discussions regarding design trade-offs and product priorities, maintaining a user-centric mindset.What We’re Looking ForProven experience in mobile application development, particularly with React Native.Strong understanding of mobile UX principles and best practices.Expertise in TypeScript, with a solid grasp of modern JavaScript.Experience with CI/CD pipelines and mobile app deployment.A passion for the cryptocurrency landscape and decentralized finance.

OppFi is a pioneering tech-enabled digital finance platform that collaborates with banks to offer financial products and services tailored for everyday Americans. Our commitment to transparency and responsibility enables us to support consumers who are often overlooked by traditional finance options, helping them to achieve better financial health.We are a team of compassionate, innovative, and inclusive individuals who thrive on embracing diverse talents, expertise, perspectives, and backgrounds. Our employees tackle every new challenge with a unique vision to see what can be achieved rather than merely accepting the status quo. Guided by our business principles, we foster an open and collaborative culture where continuous improvement is the norm, and the best ideas always prevail! We invite individuals who are eager to impact the financial system by facilitating access to credit, enhancing financial inclusion, promoting fiscal wellness, and delivering outstanding customer service.Fun facts: OppFi is consistently rated as one of the top consumer financial platforms online, boasting a 4.5/5.0-star rating on Trustpilot. We are proud to be recognized as a 2025 Crain’s Fast 50™ company and featured on Built In's 2025 Best Places to Work in Chicago.About the role:We are seeking a Manager of Enterprise Application Engineering to join our dynamic OppFi Technology team. This pivotal role will report directly to the Senior Director of Platform and Operations and will lead a talented team of engineers dedicated to advancing OppFi’s technological initiatives.Your Responsibilities:As the Manager of Enterprise Application Engineering, you will lead a skilled team of engineers, serving as their technical mentor and professional guide. Your objective is to be the trusted technology partner that revolutionizes business operations by creating a secure, scalable, and automated environment that empowers our workforce, safeguards our data, and propels our business forward.Team Leadership & MentorshipLead, mentor, and cultivate a world-class team of Enterprise Application Engineers.Oversee hiring, onboarding, performance management, and the career development of your direct reports.Act as the "player-coach" and foremost technical expert for your team, adept at unblocking your engineers, leading complex architectural reviews, and resolving challenging issues.Encourage a culture of accountability, collaboration, and perpetual improvement.

At Assured, we are dedicated to transforming the insurance landscape. Claims processing, often sidelined, is the very core of the industry. Currently, this process is labor-intensive, relying on phone calls, faxes, and instinctual judgments, which costs the industry billions annually. We believe there’s a better way.We empower major insurers with innovative software solutions designed for success in a modern, tech-centric world. From streamlined self-service claim-filing tools to backend fraud detection systems, we are the driving force behind claims processing for some of the world’s largest insurance companies.The challenges we encounter are vast and varied, from crafting digital experiences that bring comfort and clarity to claimants during their most daunting moments to orchestrating large-scale, machine learning-driven decision-making on billions in claims payments. Life at Assured is dynamic, collaborative, and fulfilling.Join us as a Senior Staff Release Engineer and play a pivotal role in revolutionizing our software delivery process. You will be at the heart of our deployment strategy—automating, refining, and ensuring that every release transitions seamlessly from development to production. This position merges hands-on technical expertise with strategic influence, empowering you to enhance release practices across various teams.Your Responsibilities Design and enhance fully automated CI/CD pipelines for reliable, zero-downtime releases. Work collaboratively with developers, QA, product, and SRE teams to ensure deployment readiness. Diagnose and resolve intricate release and environment issues, implementing root-cause solutions. Manage the Release Candidate (RC) lifecycle, ensuring builds meet quality, stability, and compliance standards. Establish and refine deployment, rollback, and verification protocols to safeguard production environments. Provide mentorship and guidance to engineers on best practices for release management and automation strategies. Oversee and maintain consistent environment configurations across development, staging, and production. Lead emergency and out-of-cycle deployments with precision and confidence. Conduct Go/No-Go reviews, balancing technical readiness with business priorities.Qualifications 5+ years of experience in release engineering, DevOps, or application deployment. Demonstrated proficiency with GitLab CI/CD, Git, and automated testing integrations. Strong understanding of cloud infrastructure and orchestration tools. Experience with containerization technologies such as Docker and Kubernetes. Excellent problem-solving skills with a focus on innovation and efficiency.

At Assured, we're revolutionizing the insurance landscape by modernizing claims processing—a crucial yet often neglected aspect of the industry. Currently, the process relies heavily on manual efforts, such as phone calls and faxes, resulting in inefficiencies that cost billions annually. We're here to change that.Our mission is to empower large insurance providers through innovative software solutions tailored for today’s technology-driven world. From intuitive self-service claim-filing systems to advanced backend fraud detection mechanisms, we serve as the backbone for claims processing for some of the largest insurers globally.Facing a myriad of challenges, we strive to create digital experiences that offer reassurance and clarity to claimants during their most stressful moments, while also managing large-scale machine learning-driven decision-making processes involving billions in claims payments. Life at Assured is dynamic, collaborative, and fulfilling.We are seeking a Senior AI Engineer to spearhead the development of next-generation AI-powered systems central to our platform. In this hands-on leadership role, you will architect scalable solutions, mentor fellow engineers, and push the boundaries of what’s possible with large language models (LLMs) and contemporary development tools.If you are passionate about AI, enjoy solving complex challenges, and are eager to see the tangible impact of your work, we want to connect with you.

Join Canonical as a Staff Engineer in Development Lifecycle and lead the initiative to adapt Ubuntu for applications in automotive, aerospace, industrial robotics, and other highly regulated sectors. Your role will be pivotal in transforming complex regulatory demands into actionable engineering excellence, ensuring Ubuntu stands as the premier choice for mission-critical systems. Collaborate across teams to cultivate a culture of quality and continuous improvement, and establish strong partnerships within the industry to advance open-source software's reputation in highly regulated environments.

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

At Assured, we are revolutionizing the insurance industry by streamlining claims processing, a critical yet often neglected element of this sector. Currently bogged down by manual processes, including phone calls and faxes, this area incurs substantial costs annually. We believe there's a better way.We empower large insurance providers with innovative software solutions tailored for a technology-centric environment. Our offerings range from user-friendly self-service claim-filing tools to sophisticated backend fraud detection systems, propelling claims processing for some of the world's foremost insurers.The challenges we encounter are vast and varied, from designing digital experiences that provide comfort and clarity during stressful times to orchestrating extensive machine learning-driven decision-making for billions in claims payments. Life at Assured is dynamic, collaborative, and immensely fulfilling.We are currently on the lookout for a highly skilled Senior Staff QA Engineer to join our innovative team. In this essential role, you will be at the forefront of developing and executing advanced testing strategies to guarantee the delivery of high-quality software products. Collaborating closely with product owners, developers, and various stakeholders, you will help define and implement industry-leading quality assurance processes.

Join Exodus as a Lead Staff Software Engineer, where you will spearhead our Solana integration initiatives and elevate wallet support to unprecedented heights. In this pivotal role, you will take full ownership of everything from wallet integrations to the meticulous optimization of smart contracts, ensuring that our customers enjoy a fast, seamless, and dependable experience. The ideal candidate is an expert in the Solana ecosystem, possessing in-depth knowledge of the blockchain. You will be charged with refining our current Solana implementation and architecting innovative features that will shape the future of Solana experiences for Exodus customers.

Canonical, a trailblazer in open source software and operating systems, invites applications for the position of Senior, Staff, or Principal Engineer. This role is fully remote, allowing you to work from anywhere in the world. At Canonical, our flagship platform, Ubuntu, empowers enterprises with cutting-edge solutions in cloud computing, data science, artificial intelligence, engineering innovation, and IoT. As a part of our innovative team, you will collaborate with top-tier public cloud and silicon providers and industry leaders across various sectors. We pride ourselves on being a pioneer in global distributed collaboration, with over 1,200 colleagues in more than 75 countries, and a commitment to minimal office-based roles. We convene in person two to four times a year in unique locations to align on strategy and execution. This is a dynamic opportunity for a Senior+ Engineer who is not only a proficient software architect but also a natural leader capable of inspiring teams to deliver exceptional products. In this role, you will contribute significantly to Canonical's portfolio through high-quality code, technical leadership, and innovative design.

Join us at Linear, where we are redefining the landscape of software development. Our mission is to reinvigorate the software experience by empowering product teams with an innovative issue tracking and project management tool that marries stunning UI with unmatched performance. Since our inception in 2019, Linear has swiftly become the go-to platform for over 20,000 companies striving to elevate their product development processes.Operating fully remotely from day one, our dynamic team is spread across North America and Europe. We share a unified vision driven by a commitment to excellence, swift execution, and a genuine passion for software craftsmanship. As makers at heart, we place great importance on the quality of our work.In our tight-knit team, versatility is key; we embrace challenges and foster a culture of continuous learning. We are in search of seasoned professionals who can tackle complex problems in both product and code. Our technology stack prominently features TypeScript, enabling us to build scalable systems that support ongoing progress on a robust foundation. While expertise in every tool we utilize isn’t mandatory, a solid grounding in JavaScript and experience with React and TypeScript are essential.Please note: We are an equal opportunity employer and operate as a remote-only company. Currently, we can only consider candidates within most European time zones for this role.Your ResponsibilitiesDesign and develop new user-facing features utilizing visually appealing and scalable UI components.Collaborate closely with founders and design teams to swiftly implement innovative feature concepts.Construct intricate React components, from drag & drop functionalities to virtualized large data rendering.Integrate real-time collaborative editing capabilities into our content editor.Enhance application performance through careful profiling.Redefine and implement best-in-class software development processes to create a purpose-built product.Our Technology StackOur technology stack mirrors the systems we build and operate. While we don’t expect you to be proficient in every technology listed, you should be enthusiastic about collaborating on product development, performance optimization, and scaling real-world applications.Pluggable agentic workload system leveraging Temporal, designed for production-scale operations.Custom websocket data synchronization framework optimized for speed and offline capabilities.Frontend technologies include React, MobX, and styled-components.Robust, widely adopted GraphQL API and SDK.Backend technologies include Node.js, PostgreSQL, Temporal, and Redis.

About Medallion:At Medallion, we are dedicated to empowering healthcare teams to prioritize what truly matters—providing outstanding patient care. Our innovative provider operations platform is designed to eliminate the administrative hurdles that hinder healthcare organizations. Through our solutions for licensing, credentialing, payer enrollment, and compliance monitoring, we enable healthcare operations teams to optimize their workflows, enhance provider satisfaction, and boost revenue generation—all while ensuring exceptional patient outcomes.Recognized as one of the fastest-growing healthcare technology companies, Medallion has garnered accolades such as No. 3 on Inc. Magazine’s 2024 Fastest-Growing Private Companies in the Pacific Region and No. 5 on LinkedIn's 2024 Top Startups in the US. We are also proud to be named a Glassdoor Best Place to Work for both 2024 and 2025, and featured on The Today Show. Our CEO, Derek Lo, has been honored as one of the Top 50 Healthcare Technology CEOs of 2024 by The Healthcare Technology Report. Backed by $130 million in funding from prestigious investors like Sequoia Capital, Google Ventures, and Salesforce Ventures, we are on a mission to transform healthcare at scale.We prioritize candidate safety. Please note that official communication will only come from @medallion.co email addresses.About the Role:As a Staff Software Engineer at Medallion, you will collaborate closely with senior team members on impactful projects, delivering production code from your very first week. You will gain exposure to a wide array of technologies while quickly taking on increased responsibilities. Enjoy the freedom to work autonomously, influence the company’s roadmap, and implement features that create a significant impact on the healthcare system—all within a supportive and experienced team comprising engineers, PMs, and designers.This role reports to one of our Engineering Managers, with base compensation ranging from $190,000 to $240,000. Along with base salary, Medallion provides equity and comprehensive benefits as part of the total compensation package. Pay is determined by various factors, including market data, geographic location, skills, qualifications, experience, and role level.What You'll Do:Engage in significant projects with business impact from day one.Scope and lead large projects, navigating ambiguity while ensuring technical excellence.Contribute to the development of the team roadmap, balancing key technical and product trade-offs.

Consensys is looking for a Principal Mobile Engineer to help define the technical direction of the MetaMask mobile platform. This is a fully remote position open to candidates around the world. Role overview This role centers on designing and building mobile solutions that enhance user experience and strengthen MetaMask applications. The Principal Mobile Engineer will play a key part in shaping how users interact with MetaMask on mobile devices. What you will do Lead the design and implementation of new mobile features for MetaMask Collaborate with product, design, and engineering teams to deliver new capabilities Guide improvements to existing mobile functionality Set technical standards and influence the future direction of MetaMask mobile apps Location This role is fully remote and available to candidates globally.

Join our innovative team at Raya as a Staff Backend Engineer specializing in Recommender Systems. In this fully remote role, you will leverage cutting-edge technology to develop and enhance our recommender systems, ensuring optimal user experience and engagement. Collaborate with cross-functional teams to design scalable solutions that drive business value.

WunderGraph is a growing startup focused on helping teams build digital products together, from initial idea through to launch. The platform brings developers together, making it easier to move from interface design to API implementation. WunderGraph aims to remove obstacles that slow down creativity and productivity. Developers at some of the largest global companies use WunderGraph to fine-tune their API environments. In March 2025, WunderGraph closed a $7.5 million USD Series A round with support from eBay, Karma Ventures, and Aspenwood Ventures. Culture matters at WunderGraph. Read more about our approach to Building the Company We Always Wanted to Work In. WunderGraph values direct communication and impact. Every team member’s voice counts. Role Overview The Staff Platform Engineer will own the core cloud infrastructure behind the WunderGraph Cosmo platform, serving enterprise customers across EMEA. The main focus is to keep the platform reliable, fast, and scalable by setting and meeting strict Service Level Objectives (SLOs). This position blends operational leadership with infrastructure engineering and product development in Go. The role involves designing internal systems for growth and managing essential product infrastructure. Key areas include: Overseeing the customer-facing telemetry pipeline using OpenTelemetry and ClickHouse Maintaining and improving the AI pipeline that supports WunderGraph’s products The ideal candidate brings hands-on technical leadership and enjoys solving complex, large-scale challenges, whether debugging distributed systems, tuning network performance, or automating infrastructure for better cost efficiency.

Join Our TeamAt Turnkey, we are revolutionizing the way developers manage private key infrastructure, crafting secure, developer-first solutions that empower wallet creation, transaction signing, and automated on-chain actions—all through a streamlined API that safeguards sensitive key information.Our ambition is to fortify the open internet by establishing robust cryptography and key management as standard practice. Founded by the team behind Coinbase Custody, the foremost crypto custodian globally, we’ve dedicated ourselves to protecting over $100 billion in digital assets across the industry.Our culture thrives on low egos, high agency, and exceptional autonomy, bringing together more than a century of collective expertise in cryptography, security, and low-level systems. We build reliable infrastructure that scales effectively.Your RoleWe are looking for a Senior Application Security Engineer to join our innovative team. You will play a crucial role in ensuring our systems, pipelines, and runtime environments are designed with security at their core and resilient for high-scale deployment.You will work closely with both product and infrastructure engineering teams, influencing how security is woven into every aspect of our architecture. This hands-on role is perfect for a builder who enjoys creating secure systems from the ground up.Your ResponsibilitiesIn collaboration with the Product and Engineering teams, you'll engage at both the design and development stages to implement new features securely. Your tasks will include:Engaging in the implementation processesConducting security reviewsContributing to product design decisionsAuditing our existing products to identify vulnerabilitiesPerforming threat modeling and security assessments for new features, identifying risks early and guiding secure architectural choices.Enhancing our automated tooling to scale security capabilities and detect code issues pre- and post-deploymentEstablishing application guardrails to enable developers to build securely by defaultInvestigating and resolving security incidents and vulnerabilities while implementing long-term improvements to prevent future occurrencesCultivating a culture of secure development across engineering teams, establishing practices that shape how Turnkey builds and deploys software.

MissionAt Speechify, our mission is to eliminate reading barriers to enhance learning experiences for everyone.With over 50 million users benefiting from our innovative text-to-speech solutions, Speechify transforms various reading materials—such as PDFs, books, Google Docs, news articles, and websites—into audible formats. This capability allows users to read faster, absorb more, and retain information better. Our award-winning text-to-speech products include applications for iOS, Android, Mac, a Chrome Extension, and a Web App. Recognized as the Chrome Extension of the Year by Google and the recipient of Apple’s 2025 Design Award for Inclusivity, Speechify is committed to accessible technology.Our diverse team of nearly 200 professionals operates in a fully remote environment, with talents hailing from industry giants like Amazon, Microsoft, and Google, as well as renowned academic institutions like Stanford and successful startups such as Stripe, Vercel, and Bolt.

At Assured, we are revolutionizing the insurance landscape by modernizing the often-overlooked process of claims handling. Currently, this vital component of the insurance industry relies heavily on manual methods, such as phone calls and intuition, leading to inefficiencies costing billions annually. We believe there's a more effective way to operate.Our mission is to equip large insurance companies with cutting-edge software solutions that enable them to thrive in today's technology-driven world. From user-friendly self-service claim-filing software to advanced backend fraud detection systems, we are the powerhouse supporting claims processing for some of the leading insurers globally.The challenges we encounter are vast and varied—ranging from crafting digital experiences that provide comfort and clarity to claimants during their most vulnerable moments, to implementing large-scale machine learning-driven decision-making for billions in claims payouts. Life at Assured is dynamic, collaborative, and immensely rewarding.We are seeking a highly skilled Senior Full Stack Engineer to help expand and refine our B2B SaaS platform. In this role, you will collaborate across the technology stack, designing systems, delivering intuitive customer-facing features, and driving improvements that allow us to innovate more rapidly and effectively.Your contributions will be pivotal in shaping our technical direction, mentoring junior engineers, and translating product concepts into seamless, high-performance experiences. If you are passionate about end-to-end development, from data structures to user interface design, and are eager to make a significant impact on our product and architecture, we want to hear from you.