Software Engineer

Engelhart

ABOUT US Engelhart was founded in 2013 by BTG Pactual Group as a commodities trading company. Our business model is “asset light” and highly diversified – giving us the ability to adapt effectively and nimbly to changing market conditions. We have assembled successful multidisciplinary teams, leveraging advanced fundamental analysis with deep quantitative and weather research capabilities.  Our activities are underpinned by strong risk management practices and by powerful technology and operational excellence. We have exceptional teams with diverse global backgrounds and decades of experience, and are driven by a highly collaborative culture, across products and competencies. In 2024, Engelhart acquired Trailstone, a global energy trading and technology company. The acquisition provides us with new expertise, analytics and proprietary technology which is being used to provide risk management and optimisation services to help maximise the value of our clients’ renewable power. The acquisition also expanded Engelhart’s capabilities into physical natural gas across North America, a critical fuel to support the energy transition. Our talented and experienced individuals work together according to its four company values: Performance, Agility, Collaboration, Entrepreneurship. ABOUT THE ROLE  This is an exciting opportunity for a Python Software Engineer with approximately five years of experience to deepen their current expertise in commodities trading, while becoming a key member of our Risk, Finance & Compliance technology function within the Engelhart Technology team.  Operating with a high degree of autonomy and offering direct exposure to stakeholders & business users, this role will give someone the opportunity to take end-to-end ownership of initiatives, from requirements gathering and solution design through to production deployment and ongoing support.   Working in close collaboration with a small, dynamic team, this role provides a unique opportunity to influence Engelhart's technology landscape and deliver initiatives with tangible business impact. This team is delivery-focused, fostering strong collaboration, open technical and business discussions, as well as a culture of continuous improvement. The ultimate objective is to enable informed decision-making across our business through reliable, scalable and well-designed technology solutions.  This Software Engineer with have the following responsibilities;  * Designing, developing, maintaining and enhancing in-house systems, as well as integrations with third-party platforms.  * Working closely with Engelhart's Risk & Finance teams to gain a strong understanding of business requirements, translating them into well-defined technical solutions.  * Providing technical support to Risk, Finance and Front Office users - particularly in the use of shared internal Python libraries, cloud infrastructure and access to enterprise data.  * Contributing to the ongoing evolution of Engelhart's technology platform, including architectural design, identification of improvement opportunities and proposal of scalable solutions.  * Designing and implementing new data visualisations for internal dashboards and reporting tools.  * Performing data cleansing, enrichments and transformation using efficient and scalable tools and techniques.  * Developing and maintaining data integration services and query interfaces for internal consumption.  * Participating in, and contributing to, technology projects that support key business initiatives.    ABOUT YOU  This individual will be a strong Python developer with current experience in a commodities trading environment. In addition to commodities experience, which is an essential criteria to be considered for this role, we believe the following technical skills & experiences will best set someone up for success at Engelhart; Technical Skills: * Strong proficiency in Python, including common analytical and visualisation libraries (e.g. Pandas, NumPy, Plotly).  * Experience building APIs using Python frameworks, preferably FastAPI.  * Familiarity with AWS services such as Lambda, Step Functions, Cognito, ECS/Fargate, DynamoDB, CloudWatch and CDK.  * Familiarity with containerisation and orchestration technologies (Docker, Kubernetes).  * Understanding of parallel and distributed data processing concepts.  Soft Skills: * Strong analytical thinking, logical reasoning and problem-solving abilities.  * A collaborative team player with strong interpersonal skills and experience working with distributed or remote teams.  * Willingness to share knowledge, mentor others and continuously learn from peers.  * Self-motivated and proactive, with the ability to work independently and manage priorities with minimal supervision.  Additional Experiences that are not necessary, but highly desirable: * Experience designing or building event-driven architectures.  * Experience with applying AI tools, large language models and agent-based workflows to improve business processes, developer productivity or data analysis.  * Familiarity with Model Context Protocol servers and related approaches for connecting AI agents securely to internal systems, APIs, databases and business tools.    What we offer  * Competitive compensation and participation in Engelhart’s discretionary bonus plan.  * 25 days of annual holiday entitlement, excluding UK public holidays. * Robust benefits package such as medical, dental, life insurance, generous pension contribution, and supplemental benefits partially subsidised by the Company.   * Eligibility to receive external and internal training in accordance with our Training & Development Policy. We believe in inclusivity and are therefore dedicated to ensuring all employees – across gender identity, race, ethnicity, sexual orientation, religion, life experience, background and more – feel welcome and included in the company. We promote diversity because we believe it is essential to our ability to think holistically.

Valarian

Valarian Technologies is a dual-use technology company building critical tools to safeguard the future in an era of evolving global security challenges. We're rethinking security beyond traditional military domains, addressing asymmetric threats that impact our technological advantage, economic strength, and democratic institutions.   We build Acra – the platform foundation for everything we do as a dual-use technology company. The platform’s name, rooted in the Greek word for citadel (or, fortress), reflects the design and purpose of our infrastructure-agnostic secure enclaves: protecting critical data. Some of the government and commercial workflows include: increased operational resiliency for mission-critical systems and functions; enabling organizations to more quickly and widely adopt emerging technologies while ensuring the integrity of their intellectual property; information flow during disaster response scenarios, and zero-trust / least-privilege environments for M&A, attorney-client privileged communications, etc. And we’ve only scratched the surface.   At our core, we're driven by a shared mission and a belief in making a tangible impact on our world. Whether you join our London HQ or the wider global organisation, you’ll be a part of collaborative, high-performing teams, creating cutting-edge software, platforms, and infrastructure.     The Role   In this role, you will help build and operate the backend and platform services behind ACRA: our secure Kubernetes platform for controlled compute, data governance, and AI-driven security operations. You will work mainly in Go, building services across backend engineering, Kubernetes, platform infrastructure, and security. This includes systems designed for reliability, scale, and security from the start, including how AI can help define, enforce, and reason about security controls. You will join a focused engineering team that values ownership, direct feedback, and support. You will start with clear areas of work, then take on more autonomy over services and platform direction as you build context. This is a strong fit for someone who wants to become excellent across backend, platform, Kubernetes, and security, and help build a serious security platform from an early stage.   What you’ll do:  As part of the team, you will: Develop backend services, APIs, and platform components using Go. Own services from design and implementation through testing, deployment, and production monitoring. Work with Docker, Kubernetes, CI/CD, GitOps, and secrets management. Build platform features for workload isolation, policy enforcement, audit logging, and identity-aware communication. Design event-driven distributed systems for resilience and scalability. Improve metrics, logging, tracing, and incident response. Work with engineering and product teams to turn requirements into technical solutions. Own specific platform areas and contribute independently. Improve how the team reviews code, deploys changes, and learns from incidents. What we are looking for: Backend engineering experience, with some exposure to Go. Experience building APIs, backend services, or microservices. Experience working with Docker and containers. Experience deploying to, developing on, or building with Kubernetes. Understanding of CI/CD pipelines and deployment workflows. Familiarity with GitOps, Argo, container registries, secrets, or deployment security. Understanding of event-driven architecture, asynchronous workflows, or distributed systems. System design knowledge around reliability, scalability, observability, and failure handling. Ability to debug issues across applications, services, and infrastructure. Interest in why the platform is being built, not just what needs to be implemented. Ownership, curiosity, and ability to work independently. Willingness to learn across backend, platform, infrastructure, and DevOps. Nice to have:  Security, regulated, or high-trust environments such as defence, government, fintech, healthcare, critical infrastructure, or sovereign cloud. Kubernetes security areas such as zero trust, workload isolation, identity-aware systems, network policy, service mesh, or policy enforcement. Platform security practices such as secrets management, supply-chain security, admission control, auditability, and operational evidence. Observability and operations, including metrics, logs, traces, alerting, incident response, and debugging production systems. Experience in startup, platform, infrastructure, or product engineering environments with broad ownership. You do not need to have worked with all of these. They are areas you may learn and build with us.   Benefits:   Our benefits are designed to ensure our employees feel taken care of and are proud to be a part of the Valarian team. We are committed to consistently enhancing our benefit package, taking into account the overall well-being and needs of our teammates. Here are the key benefits accessible to all employees at Valarian Technologies:   Equity – because you have the right to own what you’re building A competitive salary – because we value your unique skills Employer pension contributions – because you deserve a secure future Hybrid work setup – because everyone has different needs Rewarding company retreats and meetups that respect your work/life balance – because we love getting to know each other! Life at Valarian Our culture is built on inclusivity, compassion and flexibility – we want everyone to be empowered to achieve their goals at Valarian.   The world is changing, and so is our way of working. If you want to join us in the London office – it’s quite nice! – you’re welcome to; and if you’d prefer to work remotely, that’s fine too.   And as we build elegant solutions to simplify the complexities of business collaboration, we also simplify work life: contribute wherever and whenever allows you to be your best self. We trust each other to consistently raise the bar, and we challenge each other to continually reach new heights.

Wolt

ABOUT WOLT At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. Working at Wolt isn’t always easy, but it’s definitely exciting. Here you’ll learn more, build more, and ship more than in most other companies. You’ll be challenged a lot, but also have a lot of fun on the way. So, if you’re a self-starter with drive and entrepreneurial spirit, this could be the ride of your life. WHAT WE’RE LOOKING FOR We’re looking for a Backend Engineer to join the Wolt AdTech & Promotions team. This role is best suited for someone who is strongly backend-oriented, thrives in ambiguity, and can take ownership of large, cross-functional initiatives from planning to delivery. YOU MIGHT BE A GREAT FIT IF YOU * Are a strong backend engineer, ideally with Golang experience * Have experience building and operating scalable backend systems * Are comfortable working in high-ambiguity environments and bringing structure where needed * Can independently lead large initiatives across team boundaries, from problem definition and planning to stakeholder alignment and on-time delivery * Communicate clearly and effectively, and know how to gather, process, and act on feedback * Can build strong working relationships with stakeholders and keep multiple parties aligned around shared goals * Have hands-on experience with AI-assisted engineering workflows, including tools like Codex, Claude, and agent-based development approaches * Bring experience with NoSQL databases such as Cassandra, MongoDB, or similar technologies REQUIREMENTS * Backend engineering experience * Strong preference for Golang * Proven ability to take ownership of complex, cross-team projects in ambiguous environments * Strong stakeholder management, planning, and delivery skills * Excellent communication and alignment-building skills * Extensive experience with AI-assisted development, including tools such as Codex, Claude, and agentic workflows * Experience with NoSQL databases such as Cassandra, MongoDB, or similar is a plus OUR COMMITMENT TO DIVERSITY AND INCLUSION We’re committed to growing and empowering a more inclusive community within our company, industry, and cities. That’s why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel.