Senior Application Developer Jobs

Meet Yubico Yubico is a global leader in identity security and creator of the YubiKey, the original hardware-backed passkey. We are publicly traded on Nasdaq Stockholm; our global footprint includes headquarters in Stockholm, Sweden, Silicon Valley, California; and Singapore. Why Join Our Mission? At Yubico, we are guided by a shared belief that your work matters. We operate under a cultural philosophy of Speed with Integrity , pushing the boundaries of technology to secure the AI frontier—protecting both human and agentic AI interactions—and leading the transition to post-quantum cryptography. In everything we do, we live by our core values: Battle Friction: We constantly look for new ways to simplify our products, our work, and the user experience. Inspire Higher: We think big, champion the open internet, and strive to do the right thing even when it is difficult. One Team: We are open, responsive, and collaborative, overcoming challenges and celebrating our successes together. Aligned with our commitment to open standards, we foster a thriving builder ecosystem through the Yubico Developer Program , offering free open-source repositories , libraries, and SDKs to help developers rapidly integrate strong hardware authentication into any application. Through close collaborations with technical partners like Google, Microsoft, and Amazon, as well as newer frontiers like OpenAI, we continue to shape a safer digital world while donating security keys to protect vulnerable communities, journalists, and humanitarian groups worldwide through our Secure it Forward program. At Yubico, we offer: Yubico Values: We work to ensure that our employees have an open space to have their voices amplified to create a workplace where everyone feels like they belong. In support of this, our employees have created some pretty cool Employee Resource Groups that foster inclusion, help build community and connection across Yubico. Additionally, Yubico donates YubiKeys to organizations in ne

Who We Are HP IQ is HP’s new AI innovation lab. Combining startup agility with HP’s global scale, we’re building intelligent technologies that redefine how the world works, creates, and collaborates. We’re assembling a diverse, world-class team—engineers, designers, researchers, and product minds—focused on creating an intelligent ecosystem across HP’s portfolio. Together, we’re developing intuitive, adaptive solutions that spark creativity, boost productivity, and make collaboration seamless. We create breakthrough solutions that make complex tasks feel effortless, teamwork more natural, and ideas more impactful—always with a human-centric mindset. By embedding AI advancements into every HP product and service, we’re expanding what’s possible for individuals, organisations, and the future of work. Join us as we reinvent work, so people everywhere can do their best work. About The Role As a Senior Platform Engineer at HP IQ, you will help build and evolve the infrastructure, tooling, and shared platform capabilities that enable our engineering teams to develop and operate reliable, secure, and scalable services across cloud and edge environments . You will work closely with application, services, AI/ML, and security teams to improve developer velocity, production readiness, reliability, and operational efficiency across a heterogeneous infrastructure footprint. What You Might Do Design, build, and maintain shared infrastructure and platform capabilities across cloud and edge environments. Build automation and self-service tooling that improves engineering velocity and operational consistency. Develop and maintain Infrastructure-as-Code, deployment workflows, and environment provisioning. Partner with engineering teams on production readiness, including reliability, security, observability, scalability, and recovery. Improve monitoring, alerting, incident response, and operational tooling across distributed environments. Automate repetitive operational t

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. Title of Job : Senior Product Acceleration Specialist - Auth0 Reports to : Director, Product Acceleration Job Purpose As a Senior Product Acceleration Specialist for Auth0, you will play a critical role in driving customer success, deep product adoption, and long-term retention across Okta’s most strategic Global 2000 (G2K) enterprise accounts. In this highly technical, developer-centric role, you will act as a trusted advisor to enterprise engineering, architecture, security, and application teams, helping them deploy complex, low-friction, high-volume Customer Identity and Access Management (CIAM) solutions on the Auth0 platform. Leveraging your deep Auth0 domain knowledge, you will guide customers through their deployment journeys by supporting key architectural decisions, driving optimal platform usage, and troubleshooting complex technical issues. Operating at the intersection of post-sales support, developer enablement, and product innovation, your core focus will include deploying modern front-end frameworks alongside validating New Product Introductions (NPIs). In doing so, you will act as the essential feedback bridge between G2K engineering teams and Auth0’s Product Management. Duties & Responsibilities Post-Sales Architectural Advisory & Troubleshooting: Partner directly with G2K Enterprise Customers to guide complex implementation patterns, navigate key architectural decisions, and resolve complex configuration challenges

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Ubiquiti Prague office is looking for talented Backend developer for the UniFi Team. You’ll be working on the UniFi application back-end to develop efficient, scalable and maintainable features. This role requires working from our Prague office at least two days per week. The project stack: Kotlin; Spring Boot 4.0; PostgreSQL; Github Actions; Go. Responsibilities: REST API development Develop integrations with network device firmware and other UniFi OS applications. Participate in all phases of development, including feature design and testing. Code reviews for other team members. Requirements: Senior-level engineering experience, typically 5+ years shipping production systems. Strong problem-solving and systems thinking - you can break down ambiguous problems and design good solutions. Good understanding of SOLID principles. Experience in web application development. Daily, fluent use of AI coding assistants as a core part of your workflow. Fluent in English and Czech. Nice to have: Kotlin and Spring framework knowledge. Advanced knowledge of networking. Familiarity with networking, virtualization, storage and HW in general. Experience with Bash and Unix. Benefits​: Competitive salary, 5 weeks of vacation per year. Discretionary bonuses based on individual performance

This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Senior Product Manager - Data, Machine Learning and GenAI Platform 20 years of payments data is a powerful asset. But only combined with the proper platform and solid processes, it can release its full potential. That’s why the Big Data, Machine Learning and GenAI platforms, within the Application Intelligence portfolio, are key for Adyen’s success. Platform Engineering builds Adyen’s internal developer platform as a Product, enabling our internal developers to autonomously build, run and maintain secure, scalable, and reliable applications with high speed and quality. Our data platform supports the creation and evolution of different data products ( e.g. Machine Learning models, GenAI apps, data pipeline, insights dashboards), impacting both merchants and key internal processes. The platform is currently serving 600+ active users including Data Engineers, Machine Learning Scientists, Applied AI Engineers or Data Analysts. All of them use data as their main asset, at the same time they all have different needs. As a Senior Product Manager, you will directly interact with this group to understand their user journeys and identify and prioritize opportunities for the platform to improve. Your goal is to bring the data developer experience (DevEx) to the next level, setting every user persona for success while keeping

Atlas HXM is the global workforce platform built on compliance. We help companies determine how to engage each member of their workforce and then execute with accountability built in — direct Employer of Record (EOR), Agent of Record (AOR), payroll, and compliance capabilities backed by a decade of practitioner-led expertise. Recognized as a category Leader by NelsonHall and Everest Group, Atlas HXM builds Human Experience Management into everything we do, guided by our "For People, by People" principle. The future of work is borderless, and so are we. Our people are located around the globe — in the U.S., the UK, India, Colombia, China, and beyond. Diversity and belonging are not just values; they are who we are. We are also committed to making a positive impact. Through our Environment, Social, and Governance (ESG) impact initiative, we are addressing our environmental footprint and promoting social responsibility. Our impact program is central to our vision and culture, focusing on employee wellness, diversity, charitable work, and ethical corporate governance. About the Role: We are looking for a Senior Engineer who views data as a core software engineering discipline, not an exercise in configuring drag-and-drop SaaS vendors. In this role, you won't just glue third-party platforms together; you will own, design, and build the underlying data systems, pipelines, and internal platforms that power our production services and application backend. You care deeply about clean code, system performance, cost efficiency, automated testing, and developer experience. You understand when a lightweight query or a simple, well-designed service beats introducing a complex, expensive distributed computing cluster. You choose simple, maintainable systems over over-engineered platforms. What You’ll Do: Design, build, and maintain data processing pipelines using modern software engineering practices. Collaborate wit

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! As a Senior Security Engineer you will: Serve as trusted advisor to team’s leadership and partner teams by clearly articulating business risks associated with security issues Lead security operation functions – including vulnerability management, SAST, DAST, detection engineering, and incident response – in CI/CD and cloud-native production environments Integrate security into our applications throughout the software development lifecycle Collaborate with product and development teams, driving the success of larger projects to ensure that software is built and deployed securely without compromising agility and speed Driving and supporting bug bounty program, application security reviews and threat modeling, including code review and dynamic testing Assess and integrate security tools to automate and scale security processes, i.e: evaluate open-source vs vendor solutions Gather and analyze security metrics to address security issues with cross-team dependencies Be a problem solver who is empathetic to developer concerns and will employ constructive and flexible approach to building innovative solutions You may be a good fit if: 5

At Beyond Finance, we've made it our mission to help everyday Americans escape the endless cycle of crippling debt and step into a brighter financial future. Through compassionate, individualized care, a culture focused on compliance and ethics, supportive user-centric technology, and customized financial solutions, we've helped over 1 million clients on their path to a brighter future. While we're proud of what we've already accomplished, we're searching for new collaborators to help us get to the next level! If you're looking to join a forward-thinking, rapidly growing organization with helping people as its number one goal, we want to hear from you. The Role As a Senior Security Engineer, you'll harden the security posture of our AWS environment and our software development pipeline. Cloud Security and vulnerability management in Wiz are the primary focus. You'll partner with DevOps, Engineering, and our Application Security Engineer to build preventative controls across infrastructure, identity, and CI/CD. The work is hands-on: configuring tooling, reviewing architecture, hardening pipelines, and supporting application security work where your range is needed. Key Responsibilities Own cloud security posture across our AWS environment using Wiz and AWS-native services, reducing risk across IAM, network segmentation, container security, secrets, and data exposure. Establish secure defaults in our Infrastructure as Code through reusable modules, guardrails, and policy as code. Harden CI/CD pipelines in partnership with DevOps. Run vulnerability management across cloud and application findings: intake, prioritization, SLA tracking, and remediation with engineering. Build automation that scales the program: ingestion, deduplication, prioritization, and developer-facing workflows. Instrument telemetry, alerting, and runbooks for the systems you own. Operate and tune our WAF: managed and custom rules, rate limiting, and bot mitigation. Requirements 5+ years of hands-on

As a Forward Deployed Engineer (FDE) you will work with customers to build and productionize solutions to their data & AI challenges using the Databricks platform. You will own the architecture, lead design decisions, and implement end-to-end systems spanning data engineering, AI, and application development. We work cross-functionally to shape long-term strategic priorities and initiatives alongside engineering, product, and developer relations. FDEs deliver with customer empathy, integrating with client systems, training, and other technical needs to help customers get most value out of their data. This is a hands-on, customer-facing role for builders who thrive at the intersection of technology and business impact. The ideal candidate combines engineering expertise with adaptability, curiosity, and a passion for working with customers and teammates to solve complex problems that drive measurable outcomes. FDEs are billable and know how to complete projects according to specification with exceptional customer empathy. The impact you will have: Production Solution Delivery: Lead impactful customer technical projects by delivering production-grade systems, designing and building reference architectures, custom applications and data ingestion and ML/AI model integration Transformational Impact: Guide strategic customers as they implement transformational big data projects including end-to-end design, build and deployment of industry-leading big data and AI applications. Work with engagement managers to scope technical delivery work with input from the customer Empower Customers: Guide customers on architecture and design; bootstrap or implement customer projects which leads to a customers' successful understanding, evaluation and adoption of Databricks. Own the Architecture: Lead architecture and design decisions, ensuring solutions are secure, scalable, and aligned with both customer needs and Databricks best practices. Work with the Databricks technical t

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. Snowflake is about empowering enterprises to achieve their full potential, and people too. With a culture that's all in on impact, innovation, and collaboration, Snowflake is the sweet spot for building big, moving fast, and taking technology and careers to the next level. We are hiring a Senior /Technical Program Manager for our Application Experience (AppEx) organization. AppEx is the engineering org that builds the surfaces developers and data engineers love — from Streamlit and Notebooks to Native Apps, Cortex Code, Snowpark drivers, and the developer platform that ties it all together. This TPM will drive high-visibility programs that span multiple AppEx teams and define how tens of thousands of developers experience Snowflake's capabilities every day. AS A SENIOR / STAFF TECHNICAL PROGRAM MANAGER, YOU WILL: Own and drive complex, cross-functional programs across AppEx engineering teams — spanning application surfaces, developer tooling, AI-powered experiences, and the underlying platform — from scoping through delivery Partner with Engineering Managers, Product Managers, and Principal Engineers to define program roadmaps, surface dependencies, and build execution plans that hold up under real-world complexity Serve as the connective tissue across AppEx sub-orgs (Appli

Location: United States – Remote Clearance: Ability to obtain and maintain a Public Trust LTS is seeking a Senior AI Platform and Harness Engineer to develop and maintain the infrastructure, tooling, and evaluation frameworks that power enterprise AI solutions. This role is responsible for building the AI platform and reusable "AI harnesses" that enable Large Language Models (LLMs), AI agents, Retrieval-Augmented Generation (RAG), and Generative AI applications to be securely developed, tested, evaluated, monitored, and deployed at scale. The ideal candidate has experience with AI platforms, LLMOps, software engineering, cloud-native technologies, and backend systems, along with a passion for building reliable, observable, and production-ready AI solutions. You will work closely with AI architects, software engineers, data scientists, and product teams to ensure AI solutions are scalable, secure, cost-effective, and continuously improving. What You'll Do: Design, build, and maintain enterprise AI platform capabilities supporting Large Language Models (LLMs), AI agents, RAG, and Generative AI applications. Lead data preparation, training and fine-tuning of LLMs Develop reusable AI harnesses to automate testing, prompt evaluation, model benchmarking, regression testing, and quality assurance. Build AI evaluation frameworks to measure model accuracy, retrieval quality, hallucination detection, latency, throughput, cost, and overall application performance. Implement observability and monitoring solutions for AI applications, including telemetry, tracing, logging, dashboards, and operational metrics. Build and maintain LLMOps pipelines supporting model deployment, versioning, evaluation, experimentation, rollback, and continuous improvement. Design automated workflows for prompt testing, retrieval evaluation, AI system validation, and performance benchmarking. Develop internal tools for prompt management, model experimentation, AI performance optimization, and developer

The Subscriptions Mission is shaping the future of how millions of people discover, purchase, and experience Spotify Premium. We build the platforms and tools that power Spotify's global subscription business, enabling new offers, pricing strategies, and commerce experiences that help our business move quickly while delivering exceptional experiences for listeners. Join the Monaco squad, where we create the internal products that enable Spotify teams to launch, configure, and manage Premium offers with confidence. From subscriptions and prepaid products to pricing updates and promotional campaigns, our tools support business-critical operations through intuitive experiences, trusted workflows, and reliable platform services. As a Senior Web Engineer, you'll develop end-to-end solutions spanning modern web applications. Working closely with engineers, product managers, designers, and business partners, you'll help create the tools that enable Spotify's global subscription business to innovate safely, efficiently, and at scale. What You'll Do Build end-to-end features across modern web applications that support Spotify's global subscription business. Create intuitive internal products that enable business teams to launch, configure, and manage Premium offers through secure, guided workflows. Develop GraphQL and gRPC APIs that connect frontend applications with distributed platform services. Design efficient database schemas, implement data migrations, and optimize application performance using PostgreSQL. Build secure, reliable, and auditable systems that support business-critical financial operations and SOX-compliant approval workflows. Collaborate with engineers across the Subscriptions Mission to evolve shared platform capabilities, improve developer experience, and increase platform reliability. Write maintainable, well-tested code while contributi

XO Health believes healthcare is fixable. Become part of the community changing the face of the industry. XO Health is the first health plan designed by and for self-insured employers that delivers a more unified health experience for everyone – from those who receive care, to those who deliver it, to those who pay for it. We are growing a multi-disciplinary team of diverse and digitally empowered employees ready to rebuild trust in healthcare through comprehensive and unified transformation. Senior Full Stack Engineer - India (Remote) About the Role : XO Health is seeking a Senior Software Engineer for building applications that enable a Provider’s experience. This position will be responsible for the full stack design, development, testing, documentation, and analysis of features utilizing .Net, Angular, GraphQL, implementing a serverless architecture in AWS. The ideal candidate will be instrumental in designing and implementing solutions that are scalable, performance-optimized and maintainable. Responsibilities: Design, develop, and maintain scalable full-stack applications for a healthcare insurance platform Engage with cross-functional teams to define and implement new features that meet the complex demands of the healthcare sector Ensure application security and compliance with HIPAA and other regulations, focusing on performance and scalability Implement serverless architectures on cloud platforms (Azure, AWS) to optimize backend functionality Utilize modern front-end frameworks (React, Angular, Vue) to create responsive user interfaces Integrate and customize rules engines for automated decision-making and efficiency Employ microservices architecture to enhance application scalability, resilience, and deployment efficiency Utilize GraphQL for efficient and flexible data retrieval, improving the application's data interaction layer Mentor junior developers, f

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the team + role We are building an elite team, applying frontier technologies to the world’s biggest financial problems. We’re looking for bold thinkers. Sharp problem-solvers. Builders who are wired to make an impact. Robinhood isn’t a place for complacency, it’s where ambitious people do the best work of their careers. We’re a high-performing, fast-moving team with ethics at the center of everything we do. Expectations are high, and so are the rewards. The Software Platform team accelerates developer velocity and increases system reliability by building the foundational platforms and tools that power Robinhood engineering. Within this group, the Compute team focuses on building and operating a highly available, scalable Kubernetes-powered container platform. We ensure that our infrastructure seamlessly supports reliable application deployments, integrates core platform capabilities, and enables multi-region scalability. We are expanding our core container systems to support our next phase of technical growth! As a Senior Software Engineer , you will focus heavily on building, operating, and expanding our container provisioning platforms. You will be responsible for designing resilient container infrastructure and contributing to our technical migration to Amazon EKS to improve platform reliability. In this position, you will collaborate with engineering teams across Robinhood to deliver reliable platform integrations for core capabilities like networking and security. Your work will directly help our infrastructure scale efficiently while maintaining a high standard of safety and system uptime! This role is based in our Be

Join Truecaller – The place where innovation meets impact! Truecaller's mission is to build trust in communication by making it safer, smarter, and more efficient. Born in Sweden, trusted by the world, and here’s why we stand out: We are trusted by over 500 million active users every month across 190+ countries We identify over 15 billion calls daily, helping users avoid spam and scams We are powered by a team of 400+ employees from 45+ nationalities We always look for people who take initiative, own their work, and keep raising the bar. An entrepreneurial mindset matters here, especially when it turns bold ideas into real actions. We stay collaborative and focused, always searching for smarter paths forward. If you want to make an impact and grow with a team that inspires millions, you’ll fit right in. The role: As a Senior Software Engineer, Android, you will be responsible for enabling and performing highly efficient application development, improving the Truecaller services for the Android platform. You will be deeply involved in the whole cycle of product development, from idea generation to delivery. What you will do Write code with great code standards Deliver complex features on both front-end intensive tasks and performance improvements on the existing code base Cover the code implementations with tests and improve the code coverage Participate in code reviews and technical design discussions Bring engineering experience to advise product and business teams to make better decisions Mentor the junior developers and take ownership of maintaining high engineering standards and a growth mindset in the team. Be the point of contact and liaise with the release team on the continuous delivery of high-quality code and the timely resolution of bugs What you bring in 5+ years of experience in Android development Strong knowledge of the Android SDK (minimum 5+ years of experience) Familiarity with RESTful APIs Sound knowledge of Kotlin and Java