Senior Software Engineer in Test - Python

Teamwork makes the stream work. Join Roku: Transforming the Way the World Enjoys TVRoku stands as the premier TV streaming platform across the U.S., Canada, and Mexico, with an ambitious vision to power every television globally. As pioneers in the streaming realm, Roku's mission is to serve as the ultimate TV streaming platform, seamlessly connecting consum…

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.

Alkeus Pharmaceuticals, Inc. is a pioneering clinical-stage biotechnology firm headquartered in Cambridge, Massachusetts, dedicated to the advancement of groundbreaking therapies aimed at addressing critical ocular diseases with significant unmet medical needs. Established in 2010, Alkeus has been diligently developing its flagship compound, gildeuretinol acetate (ALK-001), which has received designation as a breakthrough therapy and orphan drug status from the U.S. Food and Drug Administration. Gildeuretinol is currently being assessed across various clinical trials for the treatment of Stargardt disease and geographic atrophy (GA) resulting from age-related macular degeneration (AMD), a leading cause of blindness in the United States.Position Summary:The Senior Clinical Scientist will take charge of providing scientific leadership and oversight for late-stage (Phase 3) clinical development programs focused on rare diseases in the field of ophthalmology. This role is crucial to maintaining scientific integrity, ensuring regulatory compliance, and successfully executing pivotal clinical trials necessary for global registration.As a key individual contributor, the Senior Clinical Scientist will act as a primary scientific collaborator throughout the clinical development process, closely partnering with clinical operations, biostatistics, regulatory affairs, and safety teams to translate strategic objectives into high-quality Phase 3 studies. This position is ideally suited for a seasoned professional with a proven track record in late-stage clinical development, particularly in rare diseases and/or ophthalmology.

Location: Cambridge, UK – This role offers flexible working arrangements; however, candidates must either reside in or be willing to relocate within a reasonable commuting distance of our Cambridge office for necessary onsite attendance.This is a fixed-term contract lasting 22 months.Are you a talented environment artist with a passion for crafting stylized, high-quality environments and efficient world-building workflows? As an Environment Artist for RuneScape: Dragonwilds, an open-world survival crafting game developed in Unreal Engine 5, you will play a crucial role in shaping an immersive and expansive game world. Your contributions to level art, props, and world building will enhance a stylized visual narrative that embraces exaggerated realism.This hands-on position is ideal for a versatile environment artist, allowing you to work autonomously across various production areas, from asset creation to in-engine execution, while ensuring a cohesive and scalable world.Your Responsibilities:Create and implement top-tier environment assets spanning level art, props, and world building using Unreal Engine 5.Develop modular kits and reusable assets to facilitate scalable open-world development.Produce assets through modeling, texturing, and material creation that align with the project's unique visual style.Work independently throughout the environment production process, from conceptualization to final in-engine integration.Collaborate with art leads and external partners to guarantee outsourced content meets established quality and stylistic standards.Adhere to established production pipelines, optimizing assets for performance in a vast, interconnected world.Your Qualifications:Robust experience in creating environment art for games utilizing Unreal Engine and industry-standard 3D software (e.g., Maya, ZBrush, Substance).Generalist skill set encompassing level art, prop creation, modeling, and texturing.Experience with open-world or large-scale environments.A strong portfolio showcasing stylized environments or exaggerated realism.Familiarity with integrating and evaluating outsourced assets within a production workflow.Knowledge of modular workflows and asset optimization for real-time environments.Experience with lighting or supporting concept art is a plus.What We Offer:Joining Jagex means you will enjoy a comprehensive Perks & Benefits package, including:Private Healthcare, including Dental Plan.Discretionary annual performance bonus.Minimum 6% Pension contributions.Life Insurance.Enhanced family leave policies from day one.Flexible working hours.

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.

Join our dynamic team as a Change Management & Communications Lead. In this pivotal role, you will be responsible for driving organizational change initiatives and developing effective communication strategies to ensure smooth transitions during times of change. You will collaborate closely with various stakeholders to create and implement change management plans that engage and support employees throughout the process.

Join the Redgate Software TeamAt Redgate, we specialize in developing innovative and user-friendly software solutions that empower data professionals to maximize the value of their databases. Our products address intricate database management issues throughout the DevOps lifecycle, enhancing efficiency, minimizing errors, and safeguarding essential business data. The data community relies on Redgate to harmonize rapid market delivery, collaborative teamwork, and robust data protection.To learn more about our culture and work environment, explore the following links:· Redgate Software – Culture· Flexa Careers· Glassdoor· RepVueYour Role:We are expanding our product management team and looking for experienced Senior Product Managers to drive our long-term vision and growth across various business sectors.In this role, you will oversee the complete product lifecycle, from formulating product strategy and inception to successful commercialization and eventual product retirement. You'll collaborate with senior stakeholders to define and implement the product vision and direction.Recognizing the significance of work-life balance, Redgate has embraced a flexible hybrid model, seeking candidates located near our Cambridge, UK office.Your Contributions at Redgate Software:· Formulate the strategy for a product or significant product area, crafting a compelling vision that addresses real customer challenges and includes comprehensive commercial plans, ensuring effective communication and implementation of the strategy organization-wide.· Collaborate with the Chief Product Officer and Group Product Managers to ensure products meet key objectives and align with the company's direction, taking ownership of initiatives that enhance outcomes.· Take charge of Redgate’s commercial outcomes and customer success, proactively identifying and executing improvements.· Work together with other Product Managers to ensure coherence in product strategy and execution.

About Speechify Speechify transforms text into audio, giving people new ways to access articles, documents, and books. The platform helps users listen to information when and how they want. With rapid growth, Speechify has become a leading solution for audio-based information. Role Overview The Senior Software Engineer will join the Core Experiences Team in Cambridge, United Kingdom. This group builds and maintains the core services and SDKs that power Speechify across multiple platforms. The position blends product and infrastructure work, focusing on reliable APIs and systems that shape the user experience. What You Will Do Work with product teams to define project scopes and streamline processes for faster customer feedback. Develop solutions using the cross-platform SDK, balancing integration needs and user experience. Improve existing features by designing efficient abstractions and refining algorithms to boost loading speed and parsing accuracy. Create cloud functions, lightweight backend services, and jobs using Kotlin.

About Farsyt Farsyt is building AI-driven solutions to reshape insurance services. The team focuses on automation, data, and artificial intelligence to improve how insurance is bought, sold, and managed. Role Overview This is a hands-on role as a Founding Engineer or Senior Software Engineer based in Cambridge, MA. Work directly with the founding team to take the core product from early development through launch. The environment is small, venture-backed, and moves quickly. Team members take on broad responsibilities and see their work make a visible impact. What You Will Do Design and build essential systems, including backend architecture, APIs, and data models. Create workflows powered by AI to automate manual insurance processes. Integrate with external tools and communication systems, often dealing with unreliable or fragmented sources. Develop automation systems using large language models (LLMs), with a focus on reliability and managing failures. Architect and maintain asynchronous, event-driven systems involving queues, workers, and long-running tasks. Deliver results quickly, moving from idea to production in days rather than months. Make key technical decisions that influence the company's direction. This role offers flexibility and the chance to help define both what gets built and how it is built.

About Speechify Speechify builds tools that remove barriers to learning by turning text into audio. More than 50 million people worldwide use Speechify’s text-to-speech products to convert materials like PDFs, books, Google Docs, news articles, and websites into audio. This helps users read faster, take in more information, and improve retention. The product lineup includes apps for iOS, Android, Mac, a Chrome extension, and a web app. Speechify has earned recognition from both Google and Apple, including Chrome Extension of the Year and the 2025 Design Award for Inclusivity. Team and Culture The team numbers nearly 200 and works fully remote, with no central office. Members include frontend and backend engineers, AI research scientists, and professionals with backgrounds at Amazon, Microsoft, and Google. The group also features alumni from top PhD programs at Stanford and founders from companies such as Stripe, Vercel, and Bolt.

Nuclera is a venture-backed biotech company headquartered in Cambridge, UK, with additional operations in Boston, USA. The team focuses on accelerating scientific discovery by making functional proteins more accessible for drug discovery research. Nuclera’s eProtein Discovery™ benchtop system helps research labs optimize protein expression and purification workflows. Role overview The Senior Embedded Software Engineer will help shape the next generation of Nuclera’s instrument platform. This role covers the full spectrum of embedded systems work, from low-level hardware control to higher-level application features. The position suits an engineer comfortable moving between bare-metal firmware, RTOS, and embedded Linux environments. What you will do Design and implement embedded software for complex scientific instruments Work on both hardware-level interactions and user-facing application logic Contribute to a system that must be reliable, scalable, and high-performing Collaborate across hardware, software, and scientific teams to deliver integrated solutions What we are looking for Experience with bare-metal firmware development Background working with RTOS and embedded Linux Ability to design and execute embedded systems for scientific or technical products Versatility to work across different layers of the embedded stack Location This position is based in Cambridge, England, United Kingdom.

Role overview Speechify seeks a Senior Software Engineer to focus on Windows and desktop applications at the Cambridge, MA office. This role involves building and supporting desktop software for Windows, collaborating with a talented team to deliver features that enhance user interaction with Speechify’s products. What you will do Design, develop, and maintain desktop applications for Windows platforms Collaborate with fellow engineers to implement new features and refine existing ones Help shape the user experience by ensuring software remains reliable and intuitive

Role Overview Speechify is hiring an iOS Core Product Software Engineer for its Cambridge, United Kingdom office. This role focuses on building and improving the core iOS application, working closely with teams across the company to deliver a smooth and reliable experience for users. What You Will Do Develop and maintain core features of Speechify’s iOS product Collaborate with engineers, designers, and product managers to shape new functionality Write clear, maintainable code and tackle technical challenges with creativity Contribute to a seamless, high-quality user experience Location This position is based in Speechify’s Cambridge office in the United Kingdom.

Role overview Roku is hiring a Senior Software Engineer to focus on ad auctions at the Cambridge, United Kingdom office. This role involves designing, building, and refining the systems that power Roku’s advertising auctions. The team’s work ensures these systems remain scalable, efficient, and dependable as Roku’s advertising business expands. What you will do Create and enhance features for Roku’s ad auction platforms Improve system performance and scalability to handle growing demand Collaborate with teams across Roku to deliver solutions that support both user experience and revenue objectives

Join Speechify as a Tech Lead for our Web Core Product and Chrome Extension development. In this pivotal role, you will spearhead technical leadership, guiding a talented team in creating innovative web solutions to enhance user experience. You will collaborate closely with product managers and designers to ensure the delivery of high-quality features and functionalities.

The Opportunity:Join our dynamic Pharmaceutical Development team at Relay Therapeutics, where you will be instrumental in shaping the regulatory strategy and executing critical Chemistry, Manufacturing, and Control (CMC) programs.Your Role:Act as the CMC regulatory lead for designated projects.Design and implement global CMC submission plans and timelines aligned with project objectives.Oversee the preparation, review, and timely submission of CMC sections for IND/IMPD/CTA, NDA/MAA, and other international regulatory documents, collaborating with regulatory affairs and CMC/Pharmaceutical Development experts.Coordinate responses to CMC inquiries and RFIs from regulatory agencies, working closely with CMC and regulatory leads.Direct CMC regulatory operations in collaboration with cross-functional teams, serving as the regulatory CMC liaison between CMC/Pharmaceutical Development, regulatory affairs, and program management.Guide CMC regulatory evaluations and compliance topics, including change controls, deviations, and GMP investigations, in consultation with CMC leadership.Stay updated on regulatory guidelines and scientific advancements pertinent to ongoing projects.

Company Overview: PhaseV, headquartered in Boston with research and development in Tel Aviv, is an innovative startup revolutionizing the drug development landscape. Our mission is to enhance the efficiency and precision of bringing new treatments to patients. By harnessing advanced causal inference techniques and pushing the limits of machine learning, PhaseV uncovers hidden signals in clinical data to provide actionable insights for optimal trial planning. Our proprietary machine learning-driven platform for adaptive clinical trial design and execution allows sponsors to swiftly capitalize on the advantages of adaptive trials, ensuring the best design meets their objectives and leads to more efficient, precise, and successful clinical outcomes. We proudly collaborate with seven of the leading pharmaceutical companies, alongside various CROs and biotechs, positioning us to significantly impact drug development and market entry. Position Overview: We are on the lookout for a skilled Senior Data Scientist to enhance our research team. The ideal candidate will possess a solid understanding of machine learning and statistics, with a keen interest in causal inference. For context on our recent challenges, please review our latest preprints: Causal Responder Detection Robust CATE Estimation Using Novel Ensemble Methods Key Responsibilities: Technical Development: Implement and optimize machine learning algorithms with a focus on causal ML applications in clinical trials. Collaborate with senior data scientists to develop and enhance our analytical platforms. Engage with clinical and biological experts to convert complex problems into technical solutions. Research & Analysis: Perform rigorous statistical analyses on both randomized and observational datasets. Develop and validate methodologies for responder identification and treatment effect estimation. Document and communicate methodologies and results to internal and external stakeholders. Collaboration: Work cross-functionally with engineering and product teams. Contribute to technical discussions and participate in peer code reviews. Assist in preparing technical documentation and research publications.

Join Kayak as a Senior Frontend Software Engineer and be part of an innovative team dedicated to creating exceptional user experiences. In this role, you will design, develop, and maintain user-facing features for our cutting-edge travel platform. Collaborate with cross-functional teams to implement responsive and visually appealing web applications.

Join Castle, the innovative finance app designed to save homeowners both time and money.Castle empowers homeowners to manage all their home expenses seamlessly in one platform. By tracking transactions, Castle identifies money-saving opportunities, enabling users to save an average of over $10,000.As housing affordability becomes increasingly challenging across the U.S., Castle aims to provide homeowners with superior data for managing their largest asset. We are developing payment infrastructure for the biggest consumer category in the U.S., helping individuals automate, consolidate, and reduce their expenses.In this role, you will be a vital and adaptable member of our engineering team, dedicated to crafting a more intuitive and streamlined experience for homeowners. You will work closely with our Head of Engineering, Head of Design, and fellow engineers to create a user-friendly application that simplifies complex home expense management and fosters long-term trust with our customers. This position is ideal for someone who is enthusiastic about tackling intricate challenges and shaping a compelling product experience in a fast-paced, early-stage company.Your Key Responsibilities Will Include:Develop and maintain RESTful APIs using the Django framework.Manage and optimize our cloud infrastructure.Oversee CI/CD pipelines along with monitoring, logging, and alerting systems.Build pivotal features such as:A bill payment system for processing ACH and check payments;An AI-powered system for recording payments made outside of the Castle environment;A data pipeline that transforms customer data into actionable insights.To Succeed in This Role, You Will Need:Proficiency in Python and the Django framework.Expertise in RESTful API design.Experience with distributed systems architecture.Strong background in cloud infrastructure and associated tools.Familiarity with CI/CD practices and tools.

About MealSuiteAt MealSuite, we are at the forefront of revolutionizing foodservice technology tailored for healthcare and senior living sectors. Our mission is to empower care teams to provide outstanding dining experiences with minimal effort. As a rapidly expanding team, we tackle significant challenges that have a direct influence on the quality of patient and resident care.About the RoleWe are looking for a Senior Software Engineer to join us in designing, building, and maintaining the foundational systems that drive the MealSuite platform. This pivotal role will be integral in executing our product roadmap initiatives, enhancing system performance, and maintaining high standards of code quality across our Ruby on Rails applications. You will work closely with Product, Design, and Engineering teams to create scalable solutions while mentoring fellow developers and helping shape our technical architecture.What You’ll Do• Design, develop, and maintain scalable Ruby on Rails applications and services• Take ownership of features from design through deployment, testing, and support• Troubleshoot complex issues and enhance application performance, database queries, and system reliability• Perform code reviews and advocate for engineering best practices, security standards, and code quality• Contribute to architectural decisions and advancements in our technology stack• Collaborate with Product, Design, and QA to align business needs with technical solutions• Engage in Agile ceremonies and provide clear updates on progress and obstacles• Mentor junior developers and promote knowledge sharing within the engineering teamWhat You Bring• Extensive experience in building production applications using Ruby on Rails• Strong understanding of relational databases (PostgreSQL or MySQL), SQL optimization, and RESTful APIs• Familiarity with testing frameworks such as RSpec, Minitest, or Capybara and background job tools like Sidekiq or Resque• Proficiency with Git and modern development workflows• Experience in debugging and optimizing production systems and delivering intricate features from start to finish• Solid grasp of software architecture, scalability, and clean coding practices• Excellent communication skills to convey technical concepts effectively and collaborate across cross-functional teams• 5+ years of professional software development experience, specifically in Ruby on RailsWhy You’ll Love Working Here• Unlimited paid time off – we trust our employees to maintain work-life balance• Retirement savings support – RRSP/401(k) matching at 100% up to 3%• Comprehensive health benefits including medical, dental, vision, life & disability insurance, and paid parental leave.