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Experience Level
Senior
Qualifications
Key Responsibilities:Develop and sustain backend functionalities for the Stays team, focusing on search, booking, and integrations. Enhance performance, reliability, and user experience of existing systems. Integrate and manage connections with internal and third-party APIs. Collaborate with frontend engineers, product managers, designers, and QA to deliver impactful features. Required Qualifications:Proficient in Java development. Experience in designing APIs and backend services. Proven ability in creating high-performance, scalable services. Familiarity with relational databases (e.g., MySQL) and web data formats/protocols (HTTP, XML, JSON). Hands-on experience with APIs (design, consumption, or integration). Excellent communicator and effective team player. Self-motivated and capable of advancing projects independently. Preferred Qualifications:Familiarity with technologies such as Spring, Git, Redis, Kafka, or similar. Experience in search, booking, or high-throughput systems.
About the job
KAYAK, a proud member of Booking Holdings (NASDAQ: BKNG), stands as a premier travel search engine, processing billions of queries to assist customers in discovering their ideal flight, accommodation, rental car, and vacation package. Our innovative corporate travel solution, KAYAK for Business, is redefining business travel.
Joining KAYAK means becoming part of a dynamic travel organization that encompasses a variety of global metasearch brands, including momondo, Cheapflights, and HotelsCombined. Our journey from a startup to an industry frontrunner is fueled by innovation, and every team member is empowered to leave their mark. Our mission is to develop the most effective travel search engine, simplifying global exploration for everyone.
We are seeking talented Java Backend Engineers to enhance and sustain KAYAK’s search and booking systems. If you are passionate about travel and committed to crafting reliable and user-friendly experiences, we invite you to apply.
This position requires in-office work at our Cambridge, MA location at least 3 days a week.
About KAYAK
KAYAK is a leading travel search engine that provides a comprehensive platform for users to find flights, accommodations, rental cars, and vacation packages. As part of Booking Holdings, we are dedicated to innovation and offer a unique corporate travel solution through KAYAK for Business, facilitating seamless travel management for businesses.
Full-time|$108K/yr - $140K/yr|On-site|Cambridge, MA USA
Your Contribution at Lila Sciences Lila Sciences is seeking a passionate Software Engineer to spearhead the development of cutting-edge Lab Instrument Integration Software, a crucial element of our AI-powered laboratory ecosystem. We want innovative thinkers who thrive at the intersection of software, science, and hardware, delivering impactful solutions tha…
Full-time|$204K/yr - $270K/yr|On-site|Cambridge, MA USA
Your Role at Lila Sciences Lila Sciences is on the lookout for an experienced Principal Software Engineer specializing in Instrument Simulations. In this pivotal position, you will spearhead the architecture and development of our cutting-edge laboratory automation platform. Your expertise will be crucial in designing the simulation framework and integration layer that links AI-driven experimental design with physical robotic systems, enabling groundbreaking scientific discoveries at an unparalleled scale. Key Responsibilities Design and implement high-fidelity simulation environments that accurately model intricate laboratory instrumentation, fluidics, and robotic processes. Establish and maintain robust integration frameworks between diverse hardware systems, ensuring the safe and reliable execution of fully automated experiments. Lead the development of APIs and interfaces to facilitate seamless interaction between scientists and AI agents with complex automation infrastructures. Champion best practices in hardware-software integration, system monitoring, and continuous integration/deployment (CI/CD) within laboratory automation contexts. Provide mentorship to engineers, likely overseeing a small, agile team.
Full-time|$177.7K/yr - $209K/yr|On-site|Cambridge, MA
Join Cambridge Mobile Telematics (CMT), the leading telematics service provider dedicated to enhancing road safety and driver performance. Our AI-powered platform, DriveWell Fusion®, aggregates data from millions of IoT devices, including smartphones and connected vehicles, to deliver actionable insights for auto insurers, automakers, and mobility companies. Headquartered in Cambridge, MA, with a global presence in cities like Budapest, Chennai, and Tokyo, we protect millions of drivers every day.We are on the lookout for a talented Principal Software Engineer to spearhead ambitious projects while mentoring our engineering teams in developing robust and scalable full-stack solutions. This pivotal role involves setting the technical direction for our platform and contributing to its ongoing success.If you are a collaborative, innovative, and customer-focused engineer eager to make a real impact on road safety, we invite you to apply!
This Integration Software Engineer position is based in Cambridge, UK and offers a hybrid working arrangement. The role is full-time and permanent. Salary: £65,000 - £80,000, depending on experience. The final offer will reflect relevant experience, transferable skills, and previous achievements. Applicants are encouraged to mention their preferred working schedule in the cover letter. Role overview This role focuses on integrating software solutions that support the advancement of quantum error correction (QEC) technology. Riverlane works at the intersection of quantum computing and fields such as material science, climate research, and drug design. Integration Software Engineers play a key part in developing and connecting systems that help address the technical challenges of QEC. About Riverlane Riverlane is committed to developing quantum error correction technology, aiming to unlock the full potential of quantum computers. The company partners with quantum hardware providers and government agencies to drive progress toward fault-tolerant quantum computing. With over $125 million raised, Riverlane continues to expand its research and development efforts in this area.
POS-9034About Our TeamThe Commerce Hub at HubSpot is revolutionizing how businesses sell, bill, and manage revenue seamlessly within our platform. Handling billions in customer transactions, our focus on accuracy, clarity, and reliability is paramount. We are developing an AI-first commerce ecosystem that integrates flawlessly with HubSpot’s CRM, offering a streamlined, consistent, and adaptable experience for both sellers and buyers.About the RoleWe are in search of a Principal Software Engineer to drive the technical evolution of Commerce Hub. This pivotal role demands hands-on involvement, where you will engage in coding, exploring services, evaluating complex designs, troubleshooting intricate systems, and taking ownership of the architecture for critical components in CPQ, Billing, Payments, and Revenue OS.Your ResponsibilitiesDevelop a Cohesive, Scalable PlatformInfluence the technical roadmap for CPQ, Billing, and Payments using strong, decisive patterns.Define and enhance core domain models to ensure consistent and predictable behavior for pricing, products, contracts, invoices, and payments.Create frameworks that facilitate easy extensions without increasing complexity.Be a Proactive, Impactful BuilderRegularly write code, lead design reviews, and construct impactful systems from start to finish.Manage extensive multi-team projects that encompass CPQ, Billing, and Payments.Transform prototypes into scalable production-ready solutions.Guide Architectural DirectionEstablish patterns for extensibility, contract boundaries, financial accuracy, event-driven consistency, and safe interactions between AI/agents and commerce objects.Advocate for simplicity in complex domains while maintaining consistency across surfaces.Collaborate Closely with Product LeadershipShape product strategies across CPQ, Buyer Portal, and Revenue OS.Assist teams in navigating trade-offs between speed, accuracy, compliance, and long-term platform sustainability.Elevate Organizational StandardsMentor senior engineers and technical leads.Drive informed design choices and facilitate learning from incidents and significant migrations.Encourage teams to align on best practices and strategic goals.
Teamwork makes the stream work. Join Roku in transforming the way the world experiences televisionAs the leading TV streaming platform across the U.S., Canada, and Mexico, Roku is dedicated to revolutionizing the viewing experience for people everywhere. We have pioneered streaming technology and seek to unify the TV ecosystem, connecting viewers with their favorite content while empowering content creators to reach vast audiences and providing advertisers with innovative engagement tools.From day one at Roku, you will make significant contributions in a thriving public company where every team member plays an essential role. This is an opportunity to impact millions of TV streamers globally while acquiring valuable experience across various fields. About the RoleIn this senior software engineering position, you will be responsible for the architecture, design, implementation, and testing of the run-time and native renderer components of Roku's innovative software development kit (SDK). Collaborate closely with fellow engineers who focus on the higher-level scripting elements of the SDK.At Roku, we take pride in creating software and features that function seamlessly on both our oldest and newest devices. Hence, it's crucial that the SDK is designed to operate efficiently even on devices with minimal system resources like RAM, Flash memory, and CPU. What you’ll be doingArchitecting, designing, implementing, and testing the run-time and native renderer of Roku's SDK.
Role overview Speechify seeks a Platform Software Engineer based in Cambridge, MA. This position centers on building and enhancing the core platforms that power Speechify’s applications. The work involves designing, implementing, and refining scalable systems that influence both product development and the overall user experience. What you will do Develop and maintain platform software supporting Speechify’s products Work with engineering, product, and design teams to deliver reliable solutions Improve existing systems for better performance and scalability Share ideas that help shape the direction of Speechify’s technology Requirements Proven experience building high-quality software Ability to collaborate with cross-functional teams Interest in tackling complex technical challenges This is an onsite role in Cambridge, MA.
Teamwork Makes the Stream Work. Roku is Revolutionizing Television.As the leading TV streaming platform across the U.S., Canada, and Mexico, Roku is on a mission to empower every television globally. We pioneered the concept of streaming to TVs and aspire to connect consumers to their favorite content while enabling content publishers to grow and monetize their audiences. Advertisers can also benefit from our unique engagement capabilities.From day one at Roku, you'll be a key contributor in our dynamic and fast-growing public company, where every team member makes a significant impact. Join us to delight millions of TV streamers worldwide while gaining diverse experiences across various disciplines. About the TeamThe International TV Software team at Roku focuses on developing and delivering innovative software for television platforms in international markets, particularly in Europe and Australia. Collaborating closely with SOC partners, we aim to introduce new TV products, develop software that adheres to regional broadcast standards, and support certification with organizations like ETV, the BBC, and DTG. Our team engages in both new platform and common software development projects, contributing to both groundbreaking features and the ongoing evolution of Roku’s international TV software ecosystem. We value engineers who are inquisitive, adaptable, and eager to comprehend the full scope of the systems they work on.About the RoleAs a Software Engineer on the Regional TV Software team, you will play a vital role in developing and delivering software for regional TV platforms, engaging in both new projects and software development. You will collaborate with SOC vendors, assist in certification processes with UK and European broadcasting organizations, and contribute to defining and building new software features. This position is ideal for an early-career engineer who is curious, collaborative, and driven to expand their expertise across various areas of a complex software system.What You’ll Be DoingDeveloping and maintaining software for regional TV platforms, focusing on European and Australian markets.Collaborating with SOC vendors to support new initiatives and software projects.
About Graphcore At Graphcore, we are pioneering the next generation of AI computing technology. Our team comprises industry-leading experts in semiconductors, software, and artificial intelligence, dedicated to developing a comprehensive AI compute stack that spans from silicon innovations to extensive data center infrastructure. As a proud member of the SoftBank Group, we are supported by substantial long-term investments, enabling us to advance critical technologies within the rapidly evolving SoftBank AI ecosystem. To capitalize on the immense opportunities in AI, Graphcore is expanding its global workforce. We are uniting the brightest minds to tackle the most challenging problems in an environment where every individual can significantly influence the organization, our products, and the future of artificial intelligence.
Join Riverlane as a Senior Software Engineer specializing in modelling, where you will leverage your expertise to develop cutting-edge software solutions. In this role, you will collaborate with a talented team of engineers and scientists to innovate and optimize our modelling capabilities. Your contributions will drive the advancement of technology in a dynamic and supportive environment.
Teamwork makes the stream work. Roku is revolutionizing the way the world experiences televisionAs the leading TV streaming platform in the U.S., Canada, and Mexico, Roku is dedicated to powering every television globally. We pioneered the streaming experience and are on a mission to connect the entire TV ecosystem. We link consumers to their favorite content, empower publishers to build and monetize vast audiences, and offer advertisers unparalleled opportunities to engage viewers.Your journey at Roku begins with impactful contributions. As a rapidly expanding public company, every team member plays a vital role. Join us in delighting millions of TV streamers worldwide while gaining invaluable experience across diverse fields. About This TeamThe Embedded teams focus on device firmware, platform features, and the integration of system-on-chip (SoC) components, emphasizing reliability, performance, and seamless user experiences across devices and TVs. About the InternshipJoin Roku’s embedded software team as a Software Engineer Intern, where your enthusiasm for technology and creativity will be pivotal to our success. This paid internship lasts for 12 weeks, starting in Summer 2026.As an Embedded Software Engineer Intern, you will tackle a specific project that enhances our embedded stack, such as implementing a new feature, improving performance, or developing automation enhancements to ensure the delivery of high-quality software across devices. Your ResponsibilitiesLead a project in the embedded sphere; possible tasks include implementing a feature, optimizing memory/performance, or creating automated tests for a system module.Utilize C++ on Linux-based systems; employ debugging and analysis tools to reproduce, isolate, and resolve issues.Collaborate with engineers across firmware, platform services, and quality assurance to ensure reliable delivery. Preferred QualificationsCurrently pursuing a degree in Computer Science, Engineering, or a related field.Proficiency in C++ (experience with modern C++ is a significant advantage).Familiarity with development and debugging on Linux-based embedded platforms.
KAYAK, a proud member of Booking Holdings (NASDAQ: BKNG), stands as a premier travel search engine, processing billions of queries to assist customers in discovering their ideal flight, accommodation, rental car, and vacation package. Our innovative corporate travel solution, KAYAK for Business, is redefining business travel.Joining KAYAK means becoming part of a dynamic travel organization that encompasses a variety of global metasearch brands, including momondo, Cheapflights, and HotelsCombined. Our journey from a startup to an industry frontrunner is fueled by innovation, and every team member is empowered to leave their mark. Our mission is to develop the most effective travel search engine, simplifying global exploration for everyone.We are seeking talented Java Backend Engineers to enhance and sustain KAYAK’s search and booking systems. If you are passionate about travel and committed to crafting reliable and user-friendly experiences, we invite you to apply.This position requires in-office work at our Cambridge, MA location at least 3 days a week.
Join Harvard University as a Senior Research Software Engineer, where you will play a pivotal role in advancing research through innovative software solutions. You will collaborate with researchers across various disciplines, design scalable systems, and contribute to cutting-edge projects that impact the academic community and beyond.
Full-time|$139.3K/yr - $174.1K/yr|On-site|Cambridge, MA
At Cambridge Mobile Telematics (CMT), we are leading the charge in telematics solutions, dedicated to enhancing road safety globally. Our innovative AI-driven platform, DriveWell Fusion®, integrates sensor data from millions of IoT devices—ranging from smartphones and proprietary Tags to connected vehicles and dashcams—along with contextual data to provide a comprehensive view of vehicle and driver behavior. Our insights empower auto insurers, automakers, commercial mobility companies, and public sector organizations to improve risk assessment, safety measures, claims processes, and driver enhancement programs. With our headquarters based in Cambridge, MA, and additional offices in Budapest, Chennai, Seattle, Tokyo, and Zagreb, we protect and support millions of drivers worldwide each day.As a Senior Full Stack Software Engineer, you will play a pivotal role in designing, developing, and maintaining scalable web applications that fuel our telematics platform. You will navigate the entire tech stack, crafting intuitive user interfaces and robust backend systems while collaborating closely with product, design, and data teams. This dynamic role is ideal for a hands-on engineer who thrives in a fast-paced environment, fosters mentorship, and possesses a strong sense of ownership and curiosity. Your contributions will significantly impact user experience with CMT’s products, reinforcing our mission to enhance road safety globally.CMT seeks a highly collaborative, customer-focused, and innovative Senior Full Stack Software Engineer who is eager to join us in making roads safer by empowering drivers!
Teamwork makes the stream work. Join Roku in Revolutionizing TV ViewingRoku stands as the leading TV streaming platform across the U.S., Canada, and Mexico, with a vision to power every television globally. As pioneers in streaming technology, our mission is to connect the entire TV ecosystem. We bridge consumers with their favorite content, empower publishers to grow and monetize their audiences, and offer advertisers unique opportunities to engage viewers.Your journey with Roku begins with a meaningful contribution. As a rapidly expanding public company, we value proactive team members who thrive in a dynamic environment. Here, you will have the chance to delight millions of global TV streamers while gaining invaluable experience across diverse disciplines. About the TeamThe International TV Software team at Roku is dedicated to developing and delivering innovative software solutions for television platforms in international markets, particularly in Europe and Australia. Collaborating closely with SOC partners, the team aims to introduce new TV products, ensure compliance with regional broadcast standards, and support certification with organizations such as ETV, the BBC, and DTG. As a cross-functional team, we value engineers who are curious, adaptable, and eager to explore the complexities of the systems they work on.Your Role at RokuAs a Senior Software Engineer on the Regional TV Software team, you will play a pivotal role in developing and delivering software for regional TV platforms. Your responsibilities will include working on new TV platform initiatives, collaborating with SOC vendors, supporting certification processes with UK and European broadcasting organizations, and defining new software features. This position offers an excellent opportunity for engineers looking to advance their careers in a complex software environment.Your ResponsibilitiesDevelop and maintain software for regional TV platforms, focusing on European and Australian markets.Collaborate with SOC vendors and broadcasting organizations to ensure compliance and certification.Contribute to the design and implementation of new software features.
Join Roku, a leading streaming platform, as a Senior Software Engineer focused on enhancing our infrastructure, efficiency, and productivity. In this role, you will play a key part in architecting and developing innovative solutions that drive our technology forward. Collaborate with cross-functional teams to optimize system performance and ensure robust reliability in our services.
Join Redgate Software as a Senior Software Engineer!At Redgate, we develop intuitive software solutions that empower data professionals to maximize the value of databases effortlessly. Our innovative tools address complex database management challenges throughout the DevOps lifecycle, simplifying processes for IT leaders, development, and operations teams. By enhancing efficiency, minimizing errors, and safeguarding vital business data, we have earned the trust of the data community.As a Senior Software Engineer, you will collaborate with a small, dynamic team that includes a Tech Lead, Lead Software Engineer, Product Designer, Product Manager, and additional software engineers. You will also receive guidance from the Group Engineering Manager, who oversees project delivery, team dynamics, and processes, as well as from an architect who provides technical leadership at the product level.This role focuses on Redgate Monitor, our premier monitoring solution. As a widely utilized tool, Redgate Monitor enables organizations to proactively oversee, diagnose, and optimize their database environments. You will play a key role in the evolution of this mature, impactful product, influencing architectural decisions, enhancing system performance, and delivering features that directly benefit thousands of global customers.We expect you to demonstrate comprehensive technical expertise, confidently tackle complex challenges with elegant solutions, lead and contribute to significant projects, and serve as a technical resource within your team. Besides advocating for best practices, you will also drive improvements in processes, tools, and architecture that benefit the broader engineering community.An essential aspect of your senior role will be to uplift others through mentoring and guidance.
Teamwork Makes the Stream Work. Roku is Revolutionizing Television ViewingAs the leading TV streaming platform in the U.S., Canada, and Mexico, Roku aims to power every television worldwide. We pioneered the streaming revolution and our mission is to be the connective tissue of the entire TV ecosystem. We link consumers with beloved content, empower publishers to cultivate and monetize audiences, and provide advertisers unique ways to engage viewers.From your first day at Roku, you will contribute significantly and feel valued. As a rapidly growing public entity, we encourage active participation—no one is just a bystander. You have the opportunity to enchant millions of TV streamers globally while gaining substantial experience across various disciplines. About the TeamThe UI team at Roku builds the essential frameworks, tools, and high-performance UI components that enhance experiences across millions of devices. We manage the middleware and UI layers that facilitate seamless navigation, responsive interactions, stunning animations, and consistent workflows for developers across our platform.Our focus encompasses graphics rendering, layout and animation systems, performance optimization, and developer APIs, all aimed at enabling the creation of reliable, visually appealing applications on a large scale. We thrive in a collaborative, high-trust environment, working closely with firmware, platform, and product teams to ensure a swift, robust, and future-ready user experience. About the RoleIn your position as a Senior Software Engineer on the UI team, you will design, develop, and optimize systems that are foundational to Roku’s user experience and developer platform. You will work on performance-critical code paths across graphics rendering, animation, layout, and UI frameworks, ensuring fluid visuals and highly responsive interactions across a diverse array of devices.You will be instrumental in defining core architectural decisions that will shape the future of our UI systems.
Collaboration Fuels Innovation. Roku is revolutionizing television viewingAs the leading TV streaming platform across the U.S., Canada, and Mexico, Roku is on a mission to empower every television globally. We pioneered the streaming experience, connecting consumers with their favorite content, enabling publishers to grow and monetize their audiences, and providing advertisers with unique engagement tools.From your first day at Roku, your contributions will be both significant and appreciated. We are a rapidly expanding public company where every team member plays an active role. Join us in delivering joy to millions of TV streamers around the globe while gaining invaluable experience across diverse areas. Are you driven to create scalable, high-performance systems that handle vast data? Do you excel at designing and implementing innovative solutions that provide engineering teams with actionable insights? Are you eager to enhance open-source observability on a grand scale? Join us in extending our open-source observability tools and developing new capabilities to help teams manage data effectively and gain actionable insights. About the Team The Observability team within Roku’s Cloud Technology Infrastructure is essential to our platform's success. We are a dynamic, high-performing international team that values ownership, effective communication, and delivering impactful engineering solutions.
Full-time|$150.7K/yr - $177.3K/yr|Hybrid|Cambridge, Massachusetts, United States
Join EverQuote as a Senior Full Stack Software Engineer on our B2B Agency Feature Team, a pivotal group shaping the future of our Agency business. This is more than just an engineering position; you will collaborate closely with all platform teams to design, develop, and scale agency features that fuel EverQuote's B2B growth. Your contributions will significantly impact how agencies utilize our platform and drive revenue on a large scale. Take charge of creating innovative, user-centric applications and interactive services that are quick, reliable, and built for substantial growth. Envision bold UI advancements, seamless front-end architecture, and essential experiences that agencies rely on. Become part of a dynamic, collaborative team of engineers who prioritize speed and meaningful output. You won't just contribute; you'll lead as a technical mentor, enhancing your team's capabilities through your expertise in modern front-end development, outstanding UI/UX design, and the progressive use of AI tools to boost developer efficiency. If you're eager to create impactful products, nurture a talented team, and influence a rapidly scaling platform, this position is for you. This role is hybrid, requiring in-office attendance several days a week. The base salary range for this full-time hybrid position is $150,700 to $177,300. Starting salaries will typically fall within the lower range. Depending on their specific role, level, and responsibilities, employees may qualify for company variable compensation or equity programs.
