Senior Backend Software Engineer

Semperis develops enterprise security and identity solutions, with a focus on creating an environment where employees feel valued and supported. The company has been recognized by Inc. 5000 as one of America’s fastest-growing cybersecurity companies and is listed as a DUNS 100 Top Startup to Work For. Semperis has also received the Inc. Best Workplace award …

Semperis is known for fostering a workplace where employees can grow and succeed together. The company has been recognized on the Inc. 5000 list of America's fastest-growing cybersecurity companies and has earned multiple awards for its positive culture and employee experience. Role overview The Platform Group at Semperis is looking for a Junior Software Engineer based in Dublin, Ireland. This position centers on designing and developing core infrastructure that supports enterprise security and identity products. Collaboration and a commitment to technical excellence are essential in this role. Key responsibilities Design and build shared platform components that improve scalability, reliability, and maintainability across several product teams. Contribute to the architecture of distributed systems using microservices and event-driven patterns for large-scale enterprise requirements. Oversee backend services throughout their lifecycle, focusing on code quality, performance, and operational efficiency. Collaborate with product engineers, DevOps, and architects to define platform features and establish technical standards. Take part in code reviews, pair programming, and provide technical guidance to teammates. Assist with initiatives that enhance developer productivity, system observability, and platform resilience. Participate in architectural discussions and help advance backend development best practices within the organization. Examine system performance and data patterns to spot optimization opportunities and guide future platform improvements. Requirements Minimum of 1 year of professional experience in software engineering, focusing on backend development. Practical experience with C# and .NET Core, including knowledge of modern framework features and performance tuning. Team-oriented mindset with a willingness to learn and contribute in a collaborative environment.

Why Choose PlayStation?At PlayStation, we pride ourselves on being not only the premier destination for gaming but also a remarkable workplace. As a global frontrunner in the entertainment industry, we develop an iconic range of products and services, including PlayStation®5, PlayStation®4, PlayStation®VR, PlayStation®Plus, and award-winning titles from PlayStation Studios.We are committed to fostering an inclusive atmosphere that empowers our employees and celebrates diversity. We invite individuals who are passionate about innovation, technology, and gaming to explore our career opportunities and become part of our expanding global family.PlayStation operates as a division of Sony Interactive Entertainment, a wholly-owned subsidiary of Sony Group Corporation.The Lead Principal Software Engineer will collaborate across various teams including Product Management, Architecture, Engineering, Hosting, and Operations. This role demands extensive technical knowledge, creativity, industry insight, and strong communication skills. You will leverage your technological expertise to drive future innovations on our platforms.In this capacity, you will play a critical role in architecting large-scale commerce systems on the Sony PlayStation Network Platform. Your contributions will adhere to industry best practices, facilitating highly available, active-active, and scalable services.You will engage in product roadmap discussions, pinpointing essential areas for enhancement and integrating these objectives into both current and future development strategies.

Join Toast, Inc. as a Staff Software Engineer in the FinTech sector, where you will be instrumental in building innovative financial solutions to empower businesses. We are looking for a skilled engineer with a passion for technology and a commitment to excellence. You'll collaborate with cross-functional teams to deliver robust software solutions that enhance our financial services platform.

Join Our Innovative Database Experience (DBX) TeamThe Database Experience team is dedicated to creating the libraries and tools that empower developers in their daily work with MongoDB. Our goal is to enhance developer adoption, satisfaction, and retention by providing a dependable and enjoyable interface.We are actively seeking a skilled engineer to join our PHP team based in Dublin. You will collaborate with a team of three engineers to optimize and drive the adoption of MongoDB within the PHP community.This role supports a hybrid working model for candidates located in Dublin.Your ResponsibilitiesMaintain and enhance the MongoDB PHP Extension.Collaborate with the libmongoc team to architect APIs utilized by the PHP driver.Engage with PHP core developers to stay informed on updates in the PHP language.Assist our Developer Relations, Documentation, and Education teams in generating high-quality resources for PHP developers.Pursue speaking and writing opportunities to actively engage with the PHP community.Are You the Right Fit?You thrive on developing libraries that enable developers to build and deploy applications more efficiently.You believe developers deserve superior tools for database interaction.You champion testing and agile software development practices.You are passionate about Open Source and committed to giving back to the community.You enjoy working within a small, distributed team across Ireland, France, Germany, and the Netherlands.Required Qualifications5+ years of experience in PHP development.3+ years of experience managing PHP extensions.Strong understanding of relational and non-relational database systems.Familiarity with testing methodologies and static analysis.Excellent English communication skills, both written and verbal.Preferred QualificationsExperience contributing to the PHP project.Proficiency with build tools such as autotools and make.Hands-on experience with MongoDB and its document model.Success MetricsWithin three months, you will effectively contribute to daily tasks, including bug fixes, feature implementations, and thorough code reviews.Within six months, you will influence the roadmap and lead the design of new features.

This hybrid role is based in Dublin, Ireland (Full relocation provided). At Toast, we are dedicated to empowering restaurants and local businesses to thrive in a digital world. Our innovative technology solutions assist business owners in operating efficiently, boosting sales, engaging customers, and fostering employee satisfaction. Our Mission Toast is proud to be the leading hospitality platform in the United States, and we are now setting our sights on global expansion. As a member of our International team, you will help build the foundational systems necessary for launching Toast into new markets. Join our high-impact engineering team that takes ownership of solving complex technical challenges in a dynamic setting. We seek leaders who excel in technical capabilities while maintaining a strong product focus to foster continuous growth for both our team and platform. Your Role (Responsibilities) Lead intricate projects within a collaborative cross-functional environment. Coordinate our backend services to facilitate internationalization across both restaurant and cloud software. Design, build, deploy, and maintain robust and scalable systems that are essential for our customers’ success. Refine our technical strategies for data management to support our international initiatives. Provide mentorship and technical guidance to fellow team members, spearheading technical discussions and promoting best engineering practices. Engage directly with pilot customers (occasionally on-site) to ensure seamless delivery and operations. Champion best coding practices, elevating standards for yourself, your team, and the organization. Utilize cutting-edge AI tools to enhance your development workflow, boost productivity, and contribute to a culture of innovation and efficiency across the team.

About MannaAt Manna, we are revolutionizing delivery services by utilizing the skies.Our mission is bold yet straightforward: to provide fast, eco-friendly, and safe suburban deliveries. We develop our own aviation-grade drones that transport food, beverages, groceries, and more from local vendors directly to customers' doors within minutes.Our team is characterized by a commitment to making a difference, a focus on safety, and a belief that the best solutions arise from collaborative teamwork where everyone can be their authentic selves. We operate with speed, passion, and an unwavering desire to improve in all endeavors.If you are eager to create groundbreaking technology that has a tangible impact on the world (and enjoy your work in the process), you’ll thrive at Manna.Welcome to Manna — where we are delivering the future.Role PurposeAs the Lead Software Engineer for the Aircraft team, you will spearhead the technical strategy for onboard and embedded aircraft systems. You will establish long-term architectural direction, oversee complex multi-project deliveries, and mentor senior engineers throughout the broader software organization.This position is perfect for someone who excels in both deep technical work in embedded/robotics software and high-level system design, standards, and team development.Key ResponsibilitiesDefine the architecture for aircraft onboard software and associated firmware.Establish standards for reliability, performance, and scalability across aircraft systems.Contribute to architectural decisions impacting multiple teams (e.g., Aircraft ↔ Airspace ↔ QA).Lead design reviews for essential components, ensuring reliable deployment in safety-critical settings.Oversee roadmap execution while balancing immediate operational requirements with long-term system sustainability.Manage risk, rollout strategies, incident analysis, and ongoing enhancement for aircraft software.Collaborate closely with Hardware, Autonomy, Operations, and Aviation stakeholders.Mentor senior engineers and strengthen technical leadership within the team.Provide daily technical leadership and coaching to software engineers.Assist in recruitment and onboarding to expand team capabilities.

At Klaviyo, we celebrate the diverse backgrounds, experiences, and perspectives that each member, affectionately known as a Klaviyo, brings to our vibrant workplace. We believe in providing every individual with a fair opportunity for success and value the unique experiences beyond traditional job qualifications. If you feel you closely align with this description but don't meet every requirement, we encourage you to apply. Curious about life at Klaviyo? Visit klaviyo.com/careers to explore how we empower creators to shape their own destinies.Team Overview:The Amplify Engineering team is dedicated to building cutting-edge internal tools, platforms, and AI-driven automation that enhance the efficiency and scalability of Klaviyo as we expand. We collaborate across various departments, including Sales, Marketing, Engineering & Product, Customer Service & Success, and Finance, to address real operational challenges with innovative software solutions.Our projects encompass internal applications, third-party integrations, interactive dashboards, CMS integrations, and robust AI systems that automate repetitive tasks, deliver timely information, and assist teams in making informed decisions. We thrive on tight feedback loops with our internal customers, enabling us to ship rapidly, learn continuously, and witness the tangible impact of our efforts on speeding up deals, resolving tickets promptly, and facilitating smoother launches.This position is tailored for lead engineers who are passionate about transforming real-world challenges into reliable, scalable solutions. The work you will do is highly visible and directly influences how thousands of Klaviyos accomplish their daily tasks.How You’ll Make an Impact:As part of the Amplify team, you will be instrumental in creating the internal platforms, automation, and AI systems that drive the daily operations of Klaviyos. As a Lead Software Engineer on Amplify, your responsibilities will include:Providing technical leadership and guidance for a suite of Amplify systems, including internal web applications, APIs, data pipelines, and AI workflows utilized by Sales, Marketing, Customer Service & Success, R&D, and Finance teams. You will play a crucial role in ensuring these systems are reliable, scalable, secure, and easy to evolve.Formulating...

Role overview The Staff Software Engineer - Backend Development at Ripple will focus on designing and building scalable backend systems in Dublin, Ireland. This position plays a central role in supporting the platform’s performance and reliability. Regular collaboration with cross-functional teams is expected. What you will do Partner with engineers and other groups to design backend architecture Develop systems that enhance platform reliability and scalability Help set technical direction for products and backend solutions Offer ideas and contribute code to address evolving customer needs

Why Join PlayStation?At PlayStation, we are not just the ultimate destination for gaming; we also pride ourselves on being an exceptional workplace. As a global leader in the entertainment industry, we produce an impressive array of products and services, including the PlayStation®5, PlayStation®4, PlayStation®VR, and an extensive library of acclaimed software titles from PlayStation Studios.We are dedicated to fostering an inclusive environment that empowers our employees and celebrates diversity. We invite passionate individuals with a curiosity for innovation and technology to explore our open positions and become part of our dynamic global team.The PlayStation brand is a part of Sony Interactive Entertainment, a wholly-owned subsidiary of Sony Group Corporation.About the RoleIn the role of Senior Staff Software Engineer, you will lead a dedicated team focused on enhancing the kernel security of PlayStation devices. This is a rare opportunity to influence the security architecture of our flagship gaming systems!Join our security team in Dublin and collaborate with our global console security group. You will refine low-level code and explore innovative avenues to engage with the open-source community. Your expertise will help ensure that PlayStation platforms remain the premier destination for gaming!

Join the MongoDB Server Query team and contribute to the development of an exceptional distributed open-source query engine. Our team is pivotal in enhancing the user experience and optimizing data processing performance. We manage the complete lifecycle of queries in the MongoDB Query Language—ranging from parsing and optimization to plan selection and execution, including geospatial search and update subsystems. As our global team expands rapidly, we have established a significant presence in North America across the US and Canada, including cities like New York and Toronto, and in Europe, with locations in Dublin, Germany, France, the Netherlands, the UK, Bulgaria, Spain, and Italy. We offer both office-based and remote work options, ensuring project alignment with convenient working hours across different time zones. We face numerous challenging problems that directly impact users across transactional, time-series, and analytical workloads. We seek your expertise in designing and building the core components of a distributed, flexible schema document database. This position is specifically for candidates located in Dublin, fitting our hybrid working model.

Role Overview Arista Networks is hiring a Software Engineer with a focus on SONiC (Software for Open Networking in the Cloud) in Dublin. This position centers on building and improving networking solutions alongside a skilled engineering team. What You Will Do Design and implement features for SONiC-based networking products Work closely with colleagues to solve technical challenges and deliver reliable solutions Contribute to open-source networking projects Engage with new technologies that shape the future of cloud networking Location This role is based in Dublin.

Join Toast, a pioneering technology company dedicated to empowering the restaurant industry through innovative software solutions. As a Staff Software Engineer focused on international operations, you will play a crucial role in shaping our global product offerings. Your expertise will help enhance the performance and reliability of our platforms, ensuring that we meet the diverse needs of our international clients.

At Klaviyo, we celebrate the diverse backgrounds, experiences, and perspectives that each Klaviyo (as we refer to ourselves) contributes to our vibrant workplace. We believe in providing equitable opportunities for success and value the unique insights each individual brings beyond conventional job qualifications. If you find yourself closely aligned with this description, we encourage you to apply. To explore more about life at Klaviyo, visit klaviyo.com/careers and discover how we empower creators to shape their own futures.Team Overview:The Amplify Engineering team is responsible for developing internal tools, platforms, and AI-driven automation that enhance the productivity and scalability of our operations as Klaviyo continues to grow. We collaborate across various departments, including Sales, Marketing, Engineering & Product, Customer Service & Success, and Finance, to address real operational challenges with thoughtfully designed software solutions.Our projects encompass internal applications, third-party integrations, interactive dashboards, CMS integrations, and sophisticated AI systems that automate repetitive tasks, deliver timely information, and support better decision-making. We thrive on rapid feedback from our internal clients, enabling us to ship solutions quickly, learn swiftly, and witness the immediate effects of our contributions on deal acceleration, ticket resolution, and smoother product launches.This position is tailored for software engineers who are passionate about transforming real-world challenges into dependable, scalable solutions. The work you do will be highly visible, directly influencing how thousands of Klaviyos accomplish their daily tasks.How You’ll Make an Impact:The Amplify team is at the forefront of building the internal platforms, automation, and AI systems that drive our daily operations at Klaviyo. As a Software Engineer II on Amplify, you will:Design, develop, and maintain critical internal products and platforms, including web applications, APIs, data and event pipelines, and AI workflows that are essential for Sales, Marketing, Customer Service & Success, R&D, and Finance teams. You will take ownership of features and small-to-medium projects from inception through deployment and iterative improvement.

CarGurus, Inc. helps people navigate every stage of their automotive experience, from shopping to financing and delivery. Founded by a small group of developers, the company has grown over 15 years into a major automotive marketplace, serving millions of consumers and thousands of dealerships each month. The team values kindness, collaboration, and creativity, and supports ongoing career development. The International team is hiring a Principal Software Development Engineer for the Dublin office. This position leads product efforts for the Canadian and UK markets, and plays a key part in shaping the local office culture. The role covers the full software development lifecycle, with work spanning both frontend and backend systems. Collaboration with Engineering and Product teams in Dublin and the US is central to the job, especially when tackling complex dealer-focused products. What you will do Lead the design and development of new full-stack features for dealer products. Integrate and enhance existing services using React, TypeScript, and Java. Design and implement integrations with third-party APIs and partners, working with applications built on Remix. Modernize and re-architect systems to use AWS and other cloud technologies. Own projects from start to finish, working closely with engineers and product partners in both Dublin and the US. Requirements Quick to learn and adapt to new challenges. Experience collaborating with other engineers to deliver meaningful solutions. Strong technical expertise combined with business insight to help guide teams in strategic decisions.

Role overview ServiceNow seeks a Director of Software Engineering Management based in Dublin. This position leads multiple engineering teams, providing direction as they build scalable software to meet customer needs. The role emphasizes both technical guidance and people leadership. What you will do Lead and mentor engineering teams, supporting their growth and encouraging strong performance Promote software development practices that ensure quality and scalability Collaborate with cross-functional partners to deliver solutions aligned with business objectives Champion ongoing process improvements and foster a culture of excellence within engineering Requirements Experience managing and developing software engineering teams Solid background in software development and technology strategy Ability to work across functions and guide teams through complex projects Track record of delivering high-quality, scalable software

Why Join Verifone?For over four decades, Verifone has been at the forefront of the electronic payment technology sector. As a leading brand, we are recognized globally as one of the largest providers of electronic payment solutions.At Verifone, we foster a vibrant, dynamic, and fast-paced work environment where our team members are results-oriented and have ample opportunities for growth. We collaborate with top retailers, banks, and partners worldwide to innovate and deliver cutting-edge payment solutions. Our commitment to excellence in both products and services is matched only by our obsession with ensuring customer satisfaction. Our employees are recognized leaders in the payments industry, driven by experience, innovation, and a relentless spirit. Whether we’re developing the next generation of secure payment systems or exploring new markets for electronic payments, our team is dedicated to the success of our customers, partners, and investors. This passion for innovation fuels the personal and professional success of each employee.Verifone proudly embraces an in-office culture, believing in the significant advantages of career development and business outcomes that arise from in-person collaboration. Currently, we offer a hybrid work schedule, but we regularly assess our attendance policy.

About Our TeamAt OpenAI, our Privacy Team is dedicated to creating a secure and trustworthy environment for all users. We oversee the privacy aspects of all OpenAI products and systems that interact with user data, providing our cross-functional partners with the essential tools to ensure compliance with the highest standards of data privacy and legal obligations. Our commitment to responsible data use is fundamental to our mission of safely advancing Artificial General Intelligence (AGI) for the benefit of society.About This RoleWe are actively seeking a passionate Software Engineer who has a solid background in building data pipelines and collaborating closely with legal teams. This position is ideal for individuals who are enthusiastic about the intersection of technology, privacy, and legal compliance. You will be responsible for designing, architecting, and developing backend systems that manage some of the most sensitive data at OpenAI.This role is based in Dublin, Ireland, and we operate on a hybrid work model, requiring three days in the office each week. We also provide relocation assistance to new hires.Key Responsibilities:Design, implement, and maintain backend systems that drive privacy and data compliance features across our API products and consumer applications.Collaborate with legal advisors and fellow engineers to address court orders and other legal requests, ensuring compliance with rigorous data privacy standards.Identify automation opportunities and develop tools that empower other teams to streamline tasks involving customer data.Establish and enforce data handling policies and procedures that align with legal and ethical standards, safeguarding user data integrity and confidentiality.You Will Excel in This Role If You:Have experience in creating data pipelines, particularly suited for legal processes and investigative workflows.Can effectively translate legal requirements into technical specifications and communicate these solutions to a non-technical audience.Are committed to taking ownership of challenges from start to finish and are willing to acquire any additional knowledge needed to succeed.Possess the skills to develop tools that enhance your workflow and that of your peers, especially when existing solutions fall short.Have a strong passion for user experience and take pride in developing products that uphold user privacy.

Join Toast, Inc. as a Staff Software Engineer and take the lead on innovative projects that shape the future of our technology. In this role, you will work collaboratively with cross-functional teams to design, develop, and implement high-quality software solutions. Your expertise will help drive technical direction and mentor junior engineers, fostering a culture of continuous improvement.

At Klaviyo, we celebrate the diverse backgrounds, experiences, and perspectives that each Klaviyo (as we call ourselves) brings to our dynamic workplace. We believe in providing every individual with a fair opportunity for success, valuing the unique contributions beyond conventional job qualifications. If you find that you align closely with the requirements but not perfectly, we encourage you to apply. Curious about what it's like to work at Klaviyo? Visit klaviyo.com/careers to discover how we empower creators to shape their own futures.Team Overview:The Amplify Engineering team is dedicated to developing innovative internal tools, platforms, and AI-driven automation that enhance operational efficiency at Klaviyo as we expand. We collaborate closely with various departments—including Sales, Marketing, Engineering & Product, Customer Service & Success, and Finance—to address real operational challenges through thoughtfully designed software solutions.Our projects encompass internal applications, third-party integrations, interactive dashboards, CMS integrations, and sophisticated AI systems that automate mundane tasks, deliver timely information, and empower teams to make informed decisions. We thrive on rapid feedback loops with our internal stakeholders, enabling us to deliver quickly, learn effectively, and witness the immediate impact of our contributions on speeding up deals, resolving tickets promptly, and streamlining launches.This position is tailored for senior engineers who are passionate about transforming real-world challenges into dependable, scalable solutions. The work is highly visible and significantly influences how our Klaviyos accomplish their tasks daily.Your Impact:As a Senior Software Engineer on the Amplify team, you will play a crucial role in designing, developing, and maintaining complex internal products and platforms, including internal web applications, APIs, data and event pipelines, and AI-enhanced workflows utilized by our Sales, Marketing, Customer Service & Success, R&D, and Finance teams.Lead the complete lifecycle of projects and features—from initial discovery and technical design through implementation and post-launch support.