Software Engineer, Python (Asset Pricing & Hedging)

Sumup

About SumUp We believe in the everyday hero. Small business owners are at the heart of all we do, so we're creating tools that help them run their businesses. With a founder’s mentality and a 'team-first’ attitude, our diverse teams across Europe, South America and the United States work together to ensure that the small business owners we partner with can be successful doing what they love.  Team Description The Lending team offers a fair, easy, timely, and financially relevant lending experience to small merchants. Empower small business owners to manage their financing independently of the stage of their business, either funding their growth, managing their cash flow, or covering their operational costs. Enable capital to be available to our merchants and consumers, always and everywhere. We are looking for our new Senior Engineer for our team responsible for developing and maintaining the backend two important pieces of our products: Risk Assessment and Dunning & Collection. This includes designing, implementing, and testing new features, as well as improving the performance and scalability of existing ones. What you’ll do * The goal is to improve the functionality and user experience of SumUp's lending platform and to ensure that it meets the needs of our merchants. * Design and develop Risk Assessment and Dunning & Collection micro-services, considering differences between markets; * Improve the performance and scalability of the systems; * Design and develop integration with external partners to enable growth. * Contribute to the development of a high-performing team. You’ll be great for this role if * More than 4 years of experience as a Software Engineer * Experience with Golang or other OOP languages such as Java, Kotlin, Python, etc.  * Experience in creating and maintaining simple components in React. * Experience with RESTful API design and development. * Experience with Git and Git workflows. * Experience with SQL and NoSQL databases, such as PostgreSQL It will be an awesome add * Good English communication skills to engage in technical refinements with an international team * Experience in a fintech/startup environment Why you should join SumUp * Opportunity to work with a truly global, multicultural team (we are 3000+ people from 93 countries, spread across 4 continents). * Learning & development budget for attending conferences and external training * Competitive salary package and virtual stock option program * Office relaxation activities such as yoga and massages regular brunches, football events, and office parties * 23 days paid vacation days * Additional health insurance and Multisport card * Restaurant ticket * An amazing team and work environment that works with passion and purpose to achieve incredible results SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age, or any other basis protected by applicable laws or prohibited by company policy. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind. SumUp will not accept unsolicited resumes from any source other than directly from a candidate Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

Okta

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. As a Staff Product Security Engineer, you will play a critical role in safeguarding Okta’s products by conducting comprehensive security reviews, guiding engineering teams in secure development practices, and handling externally reported vulnerabilities. You will engage in code reviews, penetration testing, and architectural security assessments to ensure the security of Okta’s platforms and features. This role is not suited for individuals who rely solely on automated vulnerability scanning. Instead, you must possess a deep technical understanding of web applications, backend services, penetration testing methodologies, and secure design principles. A successful candidate will have expertise in authentication protocols (SAML, OAuth, OIDC), threat modeling, and a strong desire to automate security processes by building tools that proactively identify vulnerabilities. You will also be responsible for communicating risks, impact, and remediation strategies to developers, leadership, and external audiences through documentation, presentations, and external publications. The ideal candidate will also demonstrate a deep technical background in assessing AI-integrated software architectures and securing Large Language Models (LLMs) against emerging threats and modern vulnerability classes. The ideal candidate will have an attacker mindset—the ability to think critically, creatively, and like an adversary when solving security challenges. We actively support public disclosure of research and findings through white papers, blog posts, and conference presentations. Job Duties and Responsibilities: * Conduct security reviews, including design reviews, threat modeling, and penetration testing of new features and major changes. * Perform manual secure code reviews across multiple programming languages. * Identify and mitigate security vulnerabilities, providing clear guidance to engineering teams. * Lead product security incidents, assess risks, and drive remediation efforts. * Develop security tools and automation to improve vulnerability detection and assessment. * Mentor junior engineers and provide guidance to non-security staff on secure development practices. * Represent Okta externally through security research, conference talks, and publications. Required Knowledge, Skills, and Abilities: * Expertise in identifying OWASP Top 10 / CWE Top 25 vulnerabilities through manual code review. * Strong experience in penetration testing and secure development practices. * Deep technical background in assessing Large Language Models (LLMs) and securing AI-integrated software architectures. * Proficiency in multiple programming languages (e.g., Java, Go, Python, C/C++). * Deep understanding of authentication & authorization protocols (OIDC, SAML, OAuth). * Strong communication skills to explain risks and remediation to developers and leadership. * Ability to automate security testing using LLMs and scripting (Python, Bash, etc.). * Experience leading security incidents and risk assessments.  Desired Skills and Abilities: * Experience in mobile (iOS/Android) and desktop (Windows/macOS) security testing. * Familiarity with SAST, DAST, SCA, and fuzzing tools. * Strong cryptographic knowledge and secure implementation practices. * Experience analyzing network protocols and traffic security. * Ability to develop proof-of-concept exploits to demonstrate vulnerabilities. #LI-Remote #LI-AR P25283_3463317 Below is the annual salary range for candidates located in Spain. Your actual salary will depend on factors such as your skills, qualifications, and experience. In addition, Okta offers equity (where applicable), bonus, and comprehensive healthcare coverage and financial benefits including paid time off and parental leave in accordance with our applicable plans and policies. To learn more about our Total Rewards program, please visit: https://rewards.okta.com/esp. The annual base salary range for this position for candidates located in Spain is between: €74.000—€101.000 EUR The Okta Experience * Supporting Your Well-Being  * Driving Social Impact  * Developing Talent and Fostering Connection + Community We are intentional about connection. Our global community, spanning over 20 offices worldwide, is united by a drive to innovate. Your journey begins with an immersive, in-person onboarding experience designed to accelerate your impact and connect you to our mission and team from day one. Okta is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, ancestry, marital status, age, physical or mental disability, or status as a protected veteran. We also consider for employment qualified applicants with arrest and convictions records, consistent with applicable laws. If reasonable accommodation is needed to complete any part of the job application, interview process, or onboarding please use this Form to request an accommodation. Notice for New York City Applicants & Employees: Okta may use Automated Employment Decision Tools (AEDT), as defined by New York City Local Law 144, that use artificial intelligence, machine learning, or other automated processes to assist in our recruitment and hiring process. In accordance with NYC Local Law 144, if you are an applicant or employee residing in New York City, please click here to view our full NYC AEDT Notice.

Newrelic

We are a global team of innovators and pioneers dedicated to shaping the future of observability. At New Relic, we build an intelligent platform that empowers companies to thrive in an AI-first world by giving them unparalleled insight into their complex systems. As we continue to expand our global footprint, we're looking for passionate people to join our mission. If you're ready to help the world's best companies optimize their digital applications, we invite you to explore a career with us! Your opportunity At New Relic, we provide our customers real-time insights so they can innovate faster. Our software delivers insightful observability tools across different technologies and distributed systems, enabling software engineering teams to quickly identify, understand, and tackle issues, analyze performance, and get the most out of their software and infrastructure. This is a great opportunity to shape the future of observability, work on complex and interesting problems, and empower companies to thrive in an AI-first world. This position is for the Distributed Tracing Pipeline team. You will be building, improving, and maintaining a distributed service architecture capable of ingesting large volumes of data, analyzing spans and traces, and publishing them downstream so the UI can query this data to offer an exceptional experience to our customers.  We work with data at scale, and our pipeline is built with a diverse tech stack (Kotlin, Java, Kafka, Redis, public cloud services, and more). You will work with a team of talented engineers, solving complex distributed system challenges and delivering solutions for our customers. If you're passionate about scale and want to contribute to one of the largest and fastest-growing observability platforms in the market, we want to hear from you. We are a fast-growing software company that cares about our product and culture. What you'll do * Build, maintain, and scale backend services and their support tools  * Participate in architectural definitions with a high degree of innovation and creativity  * Work closely with product and experience teams to understand product specifications and influence the roadmap for the distributed tracing product at New Relic  * Create automation and tooling to make our systems more scalable and easier to deploy  * Work in an agile environment with a DevOps approach, teams build and maintain their own software, including participating in on-call rotations  * Use AI tools to accelerate your development workflow, from writing and reviewing code to investigating production issues and help the team adopt what works * Embrace a culture of technical excellence and shared knowledge   This role requires * Experience with distributed systems, concurrency, and scaling in production environments  * Strong experience writing software in OOP languages (Kotlin, Java, Go, etc.) and comfort adapting to different languages and frameworks  * Familiarity with asynchronous programming techniques: streams, event-based flows, task queues, message queues  * Comfort working in a fast-paced environment focused on delivering production code at a regular cadence using Agile techniques, tools, and methodologies  * A collaborative work style that includes colleagues in important decisions and leads to shared code ownership  * Adaptability in a rapidly changing industry, curiosity about AI and readiness to enhance your development workflow  * Proficiency in English Bonus points if you have * Contributions to open source projects  * Understanding of the value that build and test automation brings to development team efficiency and reliability, with passion for applying these techniques  * Experience with OpenTelemetry or related industry knowledge  * Experience in technical mentorship and supporting colleagues' skill development Please note that visa sponsorship is not available for this position. Fostering a diverse, welcoming and inclusive environment is important to us. We work hard to make everyone feel comfortable bringing their best, most authentic selves to work every day. We celebrate our talented Relics’ different backgrounds and abilities, and recognize the different paths they took to reach us – including nontraditional ones. Their experiences and perspectives inspire us to make our products and company the best they can be. We’re looking for people who feel connected to our mission and values, not just candidates who check off all the boxes.  If you require a reasonable accommodation to complete any part of the application or recruiting process, please reach out to resume@newrelic.com. We believe in empowering all Relics to achieve professional and business success through a flexible workforce model. This model allows us to work in a variety of workplaces that best support our success, including fully office-based, fully remote, or hybrid. Our hiring process In compliance with applicable law, all persons hired will be required to verify identity and eligibility to work and to complete employment eligibility verification. Note: Our stewardship of the data of thousands of customers means that a criminal background check is required to join New Relic. We will consider qualified applicants with arrest and conviction records based on individual circumstances and in accordance with applicable law including, but not limited to, the San Francisco Fair Chance Ordinance. Headhunters and recruitment agencies may not submit resumes/CVs through this website or directly to managers. New Relic does not accept unsolicited headhunter and agency resumes, and will not pay fees to any third-party agency or company that does not have a signed agreement with New Relic. New Relic develops and distributes encryption software and technology that complies with U.S. export controls and licensing requirements. Certain New Relic roles require candidates to pass an export compliance assessment as a condition of employment in any global location. If relevant, we will provide more information later in the application process. Candidates are evaluated based on qualifications, regardless of race, religion, ethnicity, national origin, sex, sexual orientation, gender expression or identity, age, disability, neurodiversity, veteran or marital status, political viewpoint, or other legally protected characteristics.  Review our Applicant Privacy Notice at https://newrelic.com/termsandconditions/applicant-privacy-policy