Platform Software Engineer at Speechify | Bristol, United Kingdom

Speechify builds text-to-speech tools that help over 50 million people turn written content, PDFs, books, Google Docs, news articles, and websites, into audio. Our mission: reading should never stand in the way of learning. With products on iOS, Android, Mac, Chrome, and the web, Speechify has earned recognition including Chrome Extension of the Year from Google and Apple’s 2025 Design Award for Inclusivity. Our fully remote team includes nearly 200 engineers, AI researchers, and alumni from companies like Amazon, Microsoft, and Google, as well as graduates of Stanford and fast-growing startups such as Stripe and Vercel. Role Overview The Platform Software Engineer joins the team responsible for Speechify’s backend services. This includes payments, analytics, subscriptions, new product infrastructure, text-to-speech features, and external APIs. The team’s work directly supports both end users and enterprise clients. This role suits someone who thinks strategically, enjoys shaping product decisions, and cares about delivering strong user experiences. Speechify values technical leadership, results, and clear communication. The company operates with a flat structure, so those who consistently deliver have room to grow their influence. What You Will Do Design, build, and maintain APIs, including public text-to-speech endpoints and internal APIs for payments, subscriptions, authentication, and consumption tracking, to meet business and scaling needs. Oversee backend API performance and maintainability across the platform. Collaborate on B2B solutions, focusing on customization and integration for enterprise partners. Work with cross-functional teams to ensure backend architecture supports product strategy and user experience goals. How We Hire The interview process includes several technical assessments, typically completed within one week. Location This role is based in Bristol, United Kingdom.

Speechify seeks a Senior Software Engineer in Bristol, United Kingdom, to help shape and improve the core experiences that define how users interact with our products. Role overview This position focuses on designing, building, and refining essential platform features. Collaboration is central: expect to work alongside colleagues from a range of disciplines to create software that users find effective and enjoyable. Ideas and solutions that improve technology and user satisfaction are valued here. What you will do Partner with cross-functional teams to design, develop, and enhance core platform features Build software with a direct impact on user interactions and experiences Offer input and solutions to make our technology more effective for users Requirements Proven engineering skills with a focus on user experience Ability to collaborate with colleagues from various specialties Motivation to develop software that addresses real user needs

Role Overview Speechify is hiring an iOS Core Product Software Engineer in Bristol, UK. This role centers on building and refining the core iOS products that power Speechify’s mobile experience. The engineer will work closely with colleagues to deliver features that improve how users interact with the app. What You Will Do Design, develop, and maintain iOS applications as part of the core product team Work with cross-functional teams to deliver features and improvements Focus on enhancing user experience and implementing new product capabilities Location This position is based in Bristol, United Kingdom.

Role overview Speechify seeks a Software Engineer specializing in Data Infrastructure and Acquisition based in Bristol, United Kingdom. This role centers on building and maintaining the core data systems behind Speechify’s text-to-speech products. What you will do Design and develop infrastructure that supports the company’s text-to-speech technology Collaborate with teams throughout Speechify to improve data acquisition and management processes Integrate new data sources and help ensure data quality across the pipeline

Role Overview Kaluza is hiring a Platform Engineer to join the Platform Engineering team in London, Edinburgh, or Bristol. Hybrid work options are available. This role reports to the Engineering Manager. The position is open to candidates with the right to work in the UK. Currently, Kaluza cannot offer visa sponsorship for this role. For future opportunities with sponsorship, please refer to the Kaluza careers site. About Kaluza Kaluza develops an Energy Intelligence Platform that helps energy companies address modern challenges and accelerate the shift to a sustainable, electrified future. By combining data, AI, and real-time decision-making, Kaluza supports partners in making clean energy reliable and affordable. The company works with major names like OVO, AGL, ENGIE, Volvo, and Volkswagen, and operates teams across Europe, North America, Asia, and Australia, including a joint venture with Mitsubishi Corporation in Japan. What You Will Do Platform Development: Design and build a scalable, reliable platform that makes software development, deployment, and operations easier for engineering teams. Automation and Tooling: Develop tools that simplify complex platform tasks, aiming to improve developer experience and efficiency. Infrastructure as Code: Use tools like Terraform, Helm, and Crossplane to automate cloud infrastructure, promoting GitOps practices. Monitoring and Observability: Work with the Site Reliability Engineering team to implement strong monitoring and logging systems. Security and Reliability: Apply security best practices to ensure the platform remains secure and dependable. Compensation Salary: £41,600 - £60,000 Location London, England, United Kingdom Edinburgh, Scotland, United Kingdom Bristol, England, United Kingdom Hybrid work arrangements are available.

About Graphcore At Graphcore, we are pioneering the future of AI computing. Our diverse team of semiconductor, software, and AI specialists has extensive experience in developing a comprehensive AI compute stack—from silicon and software to data center-scale infrastructure. As a proud member of the SoftBank Group, we benefit from substantial long-term investments, positioning us to deliver innovative technologies within the rapidly expanding SoftBank AI ecosystem. To seize the vast and exciting opportunities in the AI landscape, Graphcore is expanding its global teams. We unite the brightest minds to tackle the most complex challenges, providing everyone the opportunity to make a significant impact on the company, our products, and the future of artificial intelligence. Job Summary As a Software Engineer, you will play a crucial role in developing new kernels and supporting existing ones for linear algebra operations on our next-generation AI hardware. The Team This is an exciting opportunity to join the expanding Kernel Engineering team at Graphcore, which is dedicated to delivering high-performance compute libraries that enable customers to maximize the performance of AI hardware. Responsibilities and Duties Implement kernels for linear algebra and tensor operations (GEMM, batched GEMM, convolutions, reductions, elementwise and fused operations) using C++. Profile and optimize performance for the next generation of AI hardware, focusing on threading, cache locality, memory layout, and kernel launch efficiency.

About Graphcore At Graphcore, we are at the forefront of AI computing innovation. Our team comprises semiconductor, software, and AI specialists, with extensive experience in developing a comprehensive AI compute stack—from silicon to software and large-scale data center infrastructure. As a proud member of the SoftBank Group, supported by substantial long-term investment, we contribute essential technology to the rapidly expanding SoftBank AI ecosystem. To harness the tremendous opportunities in AI, Graphcore is growing its teams worldwide. We unite the brightest minds to tackle the most challenging problems, creating an environment where every team member can significantly influence the company, our products, and the future of artificial intelligence.

About UsGraphcore is a pioneering force in the realm of Artificial Intelligence computing, dedicated to creating cutting-edge hardware, software, and systems infrastructure that will usher in a new era of AI advancements.As a proud member of the SoftBank Group, Graphcore collaborates with a prestigious network of companies committed to driving transformative technologies. Our shared ambition is to enable Artificial Super Intelligence and ensure its advantages are available to all.Our diverse teams encompass a wide array of skills and perspectives, including AI researchers, silicon designers, software engineers, and systems architects, fostering a culture of continuous learning and innovation.Job SummaryJoin our Analysis Tools Team as a Graduate Engineer, where you'll be integral in developing profiling tools designed to assist users in optimizing their applications for Graphcore hardware.The TeamThe Analysis Tools Team is responsible for creating profiling tools that help users maximize their applications' efficiency on Graphcore hardware. This involves gathering profiling data from both hardware and software, processing it, and presenting it through libraries, command line tools, and graphical interfaces.Responsibilities and DutiesDesigning, developing, and testing profiling features.Resolving bugs and providing customer support.Collaborating with fellow engineers and sharing knowledge.

jobsforhumanity is hiring a Senior Engineer in Bristol. This position plays a key part in developing technology that supports marginalized communities and opens up equitable job opportunities. Role overview The Senior Engineer will work closely with colleagues from different disciplines to build and improve projects that align with the company’s mission. Technical skills and a collaborative approach are essential in this role. What you will do Apply engineering expertise to create solutions that have a direct impact on underrepresented groups in the workforce. Work with cross-functional teams to design, develop, and deliver meaningful projects. Support the company’s goal of expanding fair job access. Requirements Extensive experience in engineering roles. Strong technical background and problem-solving skills. Ability to collaborate effectively with colleagues from various departments.

Assystem is seeking an Electrical Engineer in Bristol to support the design, development, and maintenance of electrical systems. This position involves working on a range of projects that require both technical expertise and close collaboration with colleagues from various disciplines. Role overview This role focuses on creating and improving electrical systems that align with client needs and industry standards. The Electrical Engineer will contribute to project planning, technical problem-solving, and the delivery of reliable solutions. Key responsibilities Design and develop electrical systems for assigned projects Maintain and update existing electrical infrastructure as required Work closely with multidisciplinary teams to ensure project goals are met Support quality assurance by adhering to client specifications and industry regulations Collaboration The role requires effective teamwork across engineering disciplines to deliver results that meet both technical and client expectations.

Join our dynamic team at Assystem as a Mechanical Engineer, where you will play a crucial role in delivering innovative engineering solutions. This position is ideal for someone passionate about design and optimization in mechanical systems, eager to contribute to projects that make a real difference.

Join Assystem as an Electrical Engineer and be part of a dynamic team dedicated to delivering innovative engineering solutions. In this role, you will leverage your technical expertise to design, develop, and implement electrical systems and components. You will collaborate with multidisciplinary teams to ensure projects are completed on time and meet our high standards of quality.

Join Assystem, a leading engineering consultancy, as an HVAC Equipment Engineer in Bristol. In this role, you will be responsible for designing, testing, and improving HVAC systems and components, ensuring they meet industry standards and client specifications. You will collaborate with a talented team of engineers and contribute to innovative projects that enhance energy efficiency and sustainability.

Join our dynamic team at Assystem as a Systems Engineer in the vibrant city of Bristol! This is an exciting opportunity for individuals who are passionate about technology and eager to kickstart their careers in engineering. In this role, you will collaborate with a talented team to design, develop, and implement cutting-edge systems that drive innovation.

jobsforhumanity is looking for a Senior Engineer in Bristol to help build solutions that support inclusive opportunities. The team values technical expertise and a commitment to social impact. Role overview This position focuses on engineering work that advances the company’s mission. The Senior Engineer will contribute to projects that aim to make a positive difference in access and inclusion. What you will do Apply advanced engineering skills to develop and improve products or systems Collaborate with team members to solve complex challenges Support the organization’s goal of creating opportunities for all Requirements Extensive experience in engineering roles Strong problem-solving abilities Interest in technology that supports social good

At Spruce, we are driven by our commitment to revolutionize home energy in the UK, making it accessible and affordable for every household to be powered by clean electricity. Our primary customers are installers, who are leading this critical transition but have historically faced challenges with outdated and inefficient software.Having launched in early 2024, we have experienced remarkable growth, securing multiple rounds of funding from prestigious venture capital firms, and now proudly support over 500 heat pump installation businesses across the UK.We are seeking a remarkable Lead Full Stack Engineer to accelerate our progress and broaden our impact as we venture beyond heat pumps.About SpruceWe tackle one of the most challenging yet essential aspects of the home energy transition: replacing traditional boilers with innovative heat pumps. With nearly 20% of the UK's carbon emissions stemming from home heating, transitioning away from gas and oil boilers is vital for reaching net zero. Heat pumps stand out as the only scalable solution, capable of converting 1kW of electricity into an impressive 4kW of heat ().However, the installation process remains cumbersome, fragmented, and excessively manual, which inflates costs for homeowners, hampers the growth of installation businesses, and complicates urgent replacements when a boiler fails.We are addressing this challenge with our comprehensive operating system designed specifically for heat pump installers. This system streamlines operations from initial inquiries through design, installation, compliance, and paperwork. Compared to leading alternatives, Spruce:Reduces the time installers spend on each job by half;Increases sales conversion rates twofold;Enhances quality, profit margins, and customer satisfaction.And this is just the beginning. With new investments and rising demand, we are expanding into the broader home renewable energy supply chain, supporting manufacturers and merchants alongside installers, and facilitating solar and battery installations in conjunction with heat pumps.Your RoleAs our Lead Full Stack Engineer, you'll blend hands-on technical expertise with team leadership and product strategy. You will continue to write significant portions of code, particularly for critical components, but your influence will grow as you define direction, remove obstacles, and elevate team performance.You will collaborate closely with engineers, designers, and product leaders to ensure we are constructing the right things, in the right way, and at the right time.

AECOM seeks a Principal Mechanical Engineer to join the Bristol office. This position leads engineering projects that shape real-world outcomes, focusing on the design and delivery of mechanical systems across various sectors. Role overview The Principal Mechanical Engineer manages projects from initial concept to final delivery. The role emphasizes technical leadership and coordination with other disciplines to ensure project success. What you will do Lead mechanical engineering projects through all phases, from early design to completion Develop and deliver mechanical system designs for multiple applications Collaborate with multidisciplinary project teams to meet objectives Location This role is based in Bristol.

AECOM is on the lookout for a skilled Data Engineer to take a pivotal role in the design, delivery, and optimization of data platforms and solutions across diverse projects.In the role of Data Engineer, you will manage various aspects of the data solution lifecycle, ensuring that all solutions comply with established quality metrics such as scalability, security, and resilience. You will be tasked with creating data-driven architectures that not only add value but also provide insights. Your contributions will directly enhance AECOM’s mission of delivering innovative and sustainable solutions to our clients.You will collaborate closely with Data Analysts, Data Scientists, and cross-functional digital teams, supporting analytics use cases and occasionally engaging in light data science activities such as feature engineering, exploratory analysis, or model operationalization.Key Responsibilities:Develop concepts through the solution lifecycle, ensuring scalability and optimization while keeping cost considerations in mind.Manage end-to-end data processes, including ingestion, transformation, modeling, and integration across multiple external-facing projects.Demonstrate that solutions have met client performance, quality, security, and governance expectations.Collaborate with cross-functional data teams to gather and clarify client requirements.Quality, Governance & Operational Excellence:Work alongside Data Analysts and Data Scientists to support analytical projects, contributing to tasks such as feature engineering and big data analysis.Collaborate with project managers, architects, and technical teams to ensure the seamless integration of data solutions within broader digital ecosystems.Maintain best practices in data engineering, ensuring high code quality, testing, CI/CD, and documentation standards.Adhere to project data governance controls, including metadata management, access controls, data lineage, PII protection, and compliance with organizational and regulatory requirements.Develop monitoring and alerting strategies for data solutions to maintain high availability, performance, and reliability.Troubleshoot complex challenges across infrastructure, data solutions, and custom analytical products.Innovation, Prototyping & Continuous Improvement:Continuously explore new cloud capabilities, data platforms, and modern data stack tools to foster innovation within the team.Encourage a culture of knowledge-sharing, standardization, and collaborative team practices.

Join Assystem as a Data Engineer and embark on an exciting journey to leverage data for impactful decision-making. In this dynamic role, you will be responsible for designing, implementing, and maintaining data pipelines and systems that facilitate seamless data flow and integrity. Collaborate with cross-functional teams to optimize data processes and contribute to innovative projects that advance our mission.

Begin your journey with us. Elevate your career here.AECOM is on the lookout for a Senior Structural Engineer to become a vital member of our dynamic team in Bristol. Our team is currently engaged in a variety of thrilling new build and refurbishment projects, ranging from £500k to over £50m, across diverse sectors including education, healthcare, defense, and commercial enterprises. We are dedicated to supporting both national and international clients in achieving their carbon reduction goals as part of our commitment to the Net Zero Carbon initiative.This role presents a fantastic opportunity to make a substantial impact on significant construction projects throughout the UK and globally.Your responsibilities will include:Contributing to the structural engineering design of intricate engineering projects.Executing tasks within predetermined budgets and timelines with moderate oversight.Managing and taking ownership of smaller projects.Mentoring graduate engineers to foster their professional growth.Join our growth journey:At AECOM, we offer an array of core and personalized benefits tailored to enhance your future and well-being. Enjoy career development opportunities, a flexible hybrid working model that promotes work-life balance, access to technical practice networks, AECOM University, and volunteering days.