Senior Fullstack Engineer - TechOps at Octopus Energy | London

At Octopus Energy for Business, we are on a mission to transform the energy landscape for enterprises across the UK. Currently serving over 120,000 clients, we are just getting started!We are revolutionizing the energy market by eliminating middlemen, offering exceptional value, unparalleled customer service, and innovative products like Shape Shifters and Electric Match that empower businesses to manage their energy effectively.As a proud member of the Octopus Energy Group, we leverage cutting-edge technology, renewable energy, and flexibility to help companies reduce both costs and carbon emissions simultaneously.Now, we are eager to amplify our reach and let more businesses discover a superior alternative—and that’s where your expertise comes in.This is a hybrid role, requiring your presence in our London office typically three days a week.

At Octopus Energy, we began with an audacious vision: to establish the UK's first fully digital energy supplier. Our journey has been driven by cutting-edge technology and a passionate team dedicated to customer satisfaction and the green energy transition. In 2025, we proudly became Britain's largest energy supplier.Today, we are rapidly expanding, developing innovative products that facilitate the transition to renewable energy. From simplifying the switch to heat pumps and solar energy to launching intelligent tariffs and scaling renewable energy generation, we tackle the most intricate challenges in the energy sector with agility, creativity, and a strong focus on customer needs. Our mission extends globally as we empower our international operations to share the successful innovations and experiences we've cultivated in the UK.Joining our Tech team means you’ll have the autonomy, diversity, and opportunity to design products that significantly impact individuals' lives—reducing energy costs, promoting sustainable living, and delivering exceptional customer experiences. You'll collaborate closely with teams from marketing, operations, and data, witnessing the real-world effects of your contributions.We invite you to apply for the position of Senior Backend Engineer within our Flexibility team.The Flexibility team is at the forefront of creating innovative products and tools that enhance energy adaptability. Our flagship product, Intelligent Octopus, automates demand management for 300,000 customers utilizing electric vehicles, home batteries, and smart heating devices. We save 2 million customers money through initiatives like Saving Sessions and Free Electricity Sessions while managing 568 MW of large-scale grid batteries to stabilize the energy system. The solutions we develop are utilized by millions, driving increased renewable energy usage and aiding in the decarbonization of global energy systems.We foster a flat organizational structure and a dynamic, open culture that nurtures innovation, flexibility, and creativity. At Octopus, we embrace authenticity—our team consists of talented individuals who achieve results while remaining true to themselves.If this opportunity resonates with you, we would be thrilled to connect.

Join the dynamic field sales team at Octopus Energy as a Venue Sales Representative! We are at the forefront of transforming traditional sales and marketing, focusing on innovative customer interactions that prioritize sustainability. Our mission is to make energy greener and better for everyone. At Octopus Energy, our customers are our top priority. We are seeking passionate individuals who share our commitment to delivering exceptional service! As a Venue Sales Representative, you will represent our brand with enthusiasm and showcase the incredible offerings of Octopus Energy to the public!

Role Overview The General Manager will collaborate closely with the CEO to propel Octopus Legacy toward its vision of becoming the premier estate planning brand in the UK. As the core driver of our business, estate planning fuels revenue growth, customer acquisition, brand trust, and sustainable value creation.This position holds comprehensive accountability for the unit's performance, growth, and transformation. The GM will spearhead strategy, commercial success, operational execution, talent leadership, and customer satisfaction. In addition to managing day-to-day operations, this role will oversee a pivotal transition: converting estate planning from a primarily service-oriented model into a scalable, technology-driven platform that ensures outstanding customer experiences and profitability. You will lead the organization through a phase of rapid expansion and complexity, stabilizing and optimizing operations, streamlining systems and processes for efficiency, and assuming complete P&L responsibility—while engaging closely with the founder and executive team to define the business’s future trajectory. Key Responsibilities Articulate and implement a cohesive short- and long-term strategy for the Estate Planning division that aligns with Octopus Legacy’s overarching growth objectives. Oversee every facet of the business unit, including revenue generation, service delivery, and operational management. Assume complete accountability for commercial and operational outcomes, translating strategic objectives into clear KPIs, measurable results, and disciplined execution across teams. Collaborate with Marketing and New Business teams to promote viral growth, enhance brand visibility, and scale lead generation and conversion efforts. Partner with Product and Technology to prioritize and expedite initiatives that enhance systems, tools, and workflows, driving operational efficiency and scalability. Develop a state-of-the-art technology platform to connect our products with customers. Manage financial resources diligently, including budgeting, forecasting, and reporting, to ensure sustainable growth and success. Navigate complex challenges and opportunities from conception to execution, working collaboratively across teams to eliminate obstacles, improve processes, and embed successful outcomes. Ensure strict compliance with all legal and regulatory standards, instituting robust quality assurance and risk management protocols. Foster and maintain strong relationships with key internal and external stakeholders—including customers, partners, and industry organizations—to bolster our market position and reputation. Lead and nurture a high-performance culture within the organization.

Octopus Legacy is seeking a Finance Manager to lead financial operations at its London office. This position offers the chance to shape finance processes for a company committed to modernizing a traditional sector and supporting clients through significant life events. Role overview The Finance Manager will take ownership of day-to-day accounting, transactional finance, and compliance. A hands-on approach is essential, with responsibility for maintaining accurate records, managing reporting cycles, and supporting the company’s continued growth. Octopus Legacy encourages professional development and supports those pursuing relevant finance qualifications. Main responsibilities Prepare monthly management accounts, including profit and loss, balance sheet, and cash flow statements. Lead month-end close activities such as reconciliations and maintaining financial controls. Monitor departmental budgets and expenses, highlight variances, and support cost management. Collaborate with external accountants, auditors, and vendors to ensure compliance and timely reporting. Improve financial systems and processes, focusing on automation as the company scales. Conduct ad-hoc financial analysis to inform commercial and operational decisions. Oversee finance-related onboarding and offboarding, including payroll and system access management. Location This role is based in London.

Assala Energy is seeking an experienced Human Resources Manager to join the team in London. As a key oil and gas producer in Gabon with a strong corporate presence in the UK, Assala Energy continues to invest in its people and HR practices. Role Overview The HR Manager will oversee daily HR operations for the UK office, supporting employees under UK contracts. This includes domestic staff, international assignees based in the UK, and UK-contracted employees working in Gabon. The role reports to the Human Resources & Corporate Affairs Director and works closely with managers, employees, the wider HR team, and colleagues in Gabon. What You Will Do Manage daily HR operations for the UK business Support UK-based employees, international assignees, and UK staff deployed to Gabon Collaborate with managers and the broader HR team to deliver consistent, credible HR support Translate business priorities into effective HR practices Enhance the capability and coordination of the HR function What Assala Energy Looks For The ideal candidate is practical, detail-oriented, and values disciplined execution. Strong judgment, the ability to bring structure, and a focus on building relationships and trust are essential. This role suits someone eager to take ownership and raise standards while supporting colleagues and improving operational practices. Take ownership of responsibilities Elevate HR standards and practices Mentor and support colleagues Drive improvements in execution and service delivery Contribute to the evolution of HR at Assala Energy This is a period of growth and change at Assala Energy, offering the chance to help shape a more strategic and value-driven HR function.

Join asos as a Direct Tax Manager where you'll lead the tax compliance and advisory efforts for our dynamic business. This pivotal role requires a strategic thinker with a passion for tax matters and a commitment to driving efficiency in tax processes. You will collaborate with cross-functional teams to ensure compliance with local and international tax regulations while optimizing our tax position.Your expertise will directly impact our financial performance and corporate reputation. If you have a keen eye for detail and a proactive approach to problem-solving, we invite you to apply and be part of our innovative team.

Last Energy, a pioneering force in the energy sector, is on the lookout for a dedicated Commercial Associate with a robust background in the power or energy industry. This pivotal role will focus on advancing capital formation, enhancing investor relations, and spearheading project-specific financial initiatives. You will be instrumental in supporting our strategic financing objectives and will gradually take charge of comprehensive commercial opportunities. The ideal candidate will possess exceptional analytical and financial acumen, coupled with a talent for fostering enduring relationships with investors and partners.

What We Do: Electric Car LeasingWhy We Do It: Greener. Fairer. Future.We are excited to invite applications for the role of Senior Account Manager to join our dynamic Customer Success team in London. This essential position is focused on cultivating the commercial success of our valued customer relationships.As a Senior Account Manager, you will assume full responsibility for a high-value enterprise portfolio, delivering our industry-leading EV salary sacrifice scheme. Your key responsibilities will include developing multi-year growth strategies, mitigating commercial risks, and ensuring maximum scheme adoption along with long-term client retention.This role demands a strong presence, exceptional commercial insight, and a steadfast dedication to transforming our mission of sustainable transport into measurable outcomes for both our corporate partners and Octopus Electric Vehicles.Please be advised that a valid UK driving licence is required for this position.

Corporate Tax ManagerUBT Accountants | UK | Hybrid Working (London / Warwick / Manchester)£80,000 – £100,000 + bonus + car or car allowance + private medical + free lunch + birthday off + moreJoin UBT Accountants, a leading firm in tax advisory, as we seek a seasoned Corporate Tax Manager to spearhead intricate restructuring and pre-sale advisory initiatives for dynamic UK businesses. This role offers a unique opportunity to engage directly with business owners during pivotal moments such as sales, exits, and succession planning.Your RoleAs the Corporate Tax Manager, you will oversee high-stakes corporate tax advisory projects, focusing on:Corporate reconstructions and reorganisationsGroup structuring and pre-sale restructuringAdvising owner-managed businesses on sales, exits, and successionCreating tax-efficient structures that align with commercial goalsManaging transactions and restructuring projects from inception to completionReviewing technical reports and HMRC clearance applicationsSpotting broader advisory opportunities within client portfoliosYou will collaborate closely with Directors and Client Managers to ensure projects are executed profitably and to the highest technical standards. Your contributions will not only yield exceptional client outcomes but will also enhance our tax advisory service as a core strength of the firm.Candidate ProfileThe ideal candidate will blend deep technical knowledge with commercial insight. You should possess:CTA qualification or in progress, preferably with a focus on Owner-Managed BusinessesExtensive experience in corporate tax advisoryRobust technical skills in reconstructions, reorganisations, and structuringDemonstrated success in advising clients pre-sale or transactionThorough understanding of UK corporate tax legislation and HMRC requirementsExperience in managing complex advisory assignments end-to-endAdeptness in cultivating trusted relationships with business owners and key decision-makersExperience in mentoring and developing junior tax professionalsYou recognize that restructuring and exit planning extend beyond tax efficiency; they involve harmonizing technical solutions with strategic business objectives while delivering advice with clarity and confidence.

At Fuse Energy, we are an innovative renewable energy startup dedicated to rapidly delivering a terawatt of renewable energy. Our approach merges fundamental principles with state-of-the-art technology to create a revolutionary energy system. Backed by $170M from esteemed investors such as Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group, and notable strategic angels like Nico Rosberg, co-founder of Solana, we are positioned at the forefront of the energy transition.Our vision encompasses a fully integrated energy company that spans the development of solar, wind, and hydrogen projects to real-time power trading and distributed energy installations. By engaging directly with consumers, we eliminate intermediaries, reduce costs, and share significant savings with our customers.In addition, we are pioneering the Energy Network: a decentralized platform of smart devices that rewards users with Energy Dollars for electrifying their homes, optimizing usage during off-peak hours, and aiding in grid stabilization. This initiative is crucial for enhancing grid reliability, particularly for scaling AI data centers and other energy-intensive sectors.

Join us in making a significant positive impact on the planet as we drive the global renewable energy revolution. At Octopus Energy Generation (OEGEN), we are dedicated to sourcing, investing in, and managing a diverse range of utility-scale renewable energy assets. With a global portfolio exceeding £7 billion, we are committed to cultivating a team that mirrors the diversity of the communities we serve.Our mission is to reshape the energy lifecycle and ensure every green electron is valuable, achieving outstanding results for our customers, investors, the environment, and society, while accelerating the journey towards net zero.About the Role:We are looking for a skilled Portfolio Manager to become a part of our Fund Management team, reporting directly to the Head of Funds and Sustainability. You will oversee a variety of energy transition strategies, including the Octopus Energy Transition Fund, an Asia-focused energy transition fund, and a forthcoming growth equity strategy set to launch in Q3. Your leadership will ensure strong governance, disciplined financial oversight, and high-quality investor reporting across these initiatives.This role requires a blend of robust fund management expertise, commercial acumen, and effective cross-functional leadership. You will collaborate closely with the platform team, the Singapore team, and the Ventures team, ensuring a cohesive fund management strategy across different investment types and operating models. You will oversee all energy transition valuations, coordinating inputs and ensuring outputs are well-supported and suitable for committee and investor review.As a manager, you will lead a team of two, responsible for maintaining the quality and consistency of the team's output across monthly and quarterly valuations, investor reports, governance documents, and fund-level analyses. This position is ideal for someone who is adept at navigating both established and growing strategies, possesses knowledge in private equity or infrastructure, and can balance meticulous attention to detail with a practical, collaborative approach.

We are seeking a highly skilled Senior Indirect Tax Manager to join our dynamic finance team at asos. In this pivotal role, you will lead our indirect tax strategy and compliance efforts, ensuring adherence to regulations while optimizing our tax position.Your expertise will guide our operations in various jurisdictions, and you will work closely with cross-functional teams to implement best practices that drive efficiency and effectiveness.

Join Ayming UK as an R&D Tax Manager and become a pivotal part of our dynamic team located in the vibrant city of London.Your key responsibilities include:Advisory Role: Deliver expert guidance on R&D tax reliefs to clients, serving as the primary escalation point while promoting a culture of continuous learning and knowledge sharing.Expertise: Utilize your proficiency in tax regulations, team leadership, and client relations to build robust partnerships and ensure client satisfaction.Team Management: Supervise a team of five, nurturing an environment that encourages knowledge exchange and overseeing intricate claims and client projects.Strategic Involvement: Keep abreast of industry developments, act as a subject matter expert, and collaborate with cross-functional teams to maintain high standards, support business growth, enhance departmental visibility, and drive innovative solutions.

About the Position Jane Street is seeking an experienced UK Tax Lawyer to join our London office, where you will play a vital role in tax structuring and advisory. You will be instrumental in managing tax implications and structural considerations for internal restructurings, including investment frameworks for senior group members and complex transactions such as acquisitions and dispositions. Your expertise will also extend to structuring and advisory matters related to the firm's trading activities. This position offers you the chance to collaborate closely with our local and global Tax team as well as with various professionals across the organization, making it an exciting opportunity to engage with a dynamic and entrepreneurial work environment. The ideal candidate will be commercially driven, exceptionally comfortable with numerical data, highly collaborative, and thrive under tight deadlines.

Location: Hammersmith, London Department: ITAssala Energy is a forward-thinking Oil and Gas Exploration and Production company dedicated to the sustainable development of its valuable assets in Gabon. We embrace a collaborative culture, champion diversity, and prioritize safety and integrity in every aspect of our operations.We are seeking a Senior Network Engineer to become a vital member of our IT team, responsible for maintaining and enhancing our global network infrastructure. In this role, you will ensure network stability, security, and efficiency across our operations while spearheading improvements and innovative solutions.

Paddle provides payment infrastructure for digital product companies as a Merchant of Record, handling the full payment process for clients. With support from investors such as KKR, FTV Capital, Kindred, Notion, and 83North, Paddle serves over 5,000 software sellers across 245 territories. Role overview The Tax Specialist position sits within Paddle’s expanding tax team and reports to the regional tax manager. Tax plays a central role in Paddle’s business, and this role ensures compliance and accuracy in tax accounting and reporting. The Tax Specialist works closely with colleagues around the world, covering both direct and indirect tax matters. Success in this position requires the ability to work independently, manage tax processes end-to-end, and carefully review work. Strong technical knowledge of tax laws and accounting standards is essential. The Tax Specialist also provides guidance to other teams and helps mentor peers. Main responsibilities Prepare indirect tax returns for Paddle in multiple territories, including related filings, payments, accounting entries, and audit support. Assist with direct tax return preparation for Paddle entities, including tax payments and accounting entries. Support transfer pricing adjustments, R&D claims, withholding tax, e-invoicing, and other tax planning activities. Lead special projects such as establishing new corporate structures or registrations, and respond to ad hoc tax questions from Paddle’s clients. Provide tax guidance and support to teams across the business as needed. Location This role is based in the UK, with the primary office located in London.

Join Interpath Advisory, a rapidly expanding international consultancy renowned for its expertise across deals, advisory, and restructuring services. We are committed to delivering impactful solutions for businesses, their investors, and stakeholders during pivotal moments when complex challenges arise.Our agile and independent approach, free from conflicts, coupled with our unwavering dedication to integrity, distinguishes us in the marketplace. Since our inception in 2021, we have expanded our footprint across the UK, Ireland, France, Germany, Austria, Spain, BVI, Cayman Islands, Bermuda, Barbados, and Hong Kong, with an ambitious vision to become a leading global advisory firm by 2030.We are currently seeking a skilled M&A Tax Manager to enhance our M&A tax practice and assist with various transactional projects, including restructurings and refinancings. This role is crucial to developing a premier transaction services offering that integrates M&A tax with advisory, corporate finance, and valuation services.Our tax practice thrives on the diverse clientele and extensive market reach of Interpath Advisory. You will engage with a wide range of clients from mid-market enterprises to large multinationals, including private equity firms and institutional investors.As M&A Tax Manager, you will oversee tax engagements on a daily basis, collaborating with the M&A tax team to further develop our M&A tax business. Additionally, you will work on broader transactional tax matters related to restructurings and refinancing, as well as partner closely with the insolvency practice focused on business recovery and managed exits.This position offers exceptional visibility within the firm and the chance to build a robust internal network.

Role Overview Entain is looking for an Indirect Tax Manager in London to oversee indirect tax compliance and strategy. This role focuses on managing VAT, GST, and other indirect tax matters across the business. The Indirect Tax Manager works closely with teams throughout the company to ensure compliance with regulations and to find opportunities to improve tax processes. What You Will Do Lead indirect tax compliance activities, including VAT and GST, for Entain’s operations. Develop and implement strategies to optimize the company’s indirect tax position. Work with internal departments to streamline and enhance tax processes. Provide expert advice on indirect tax issues and regulatory requirements.