Jorge Aranda De Miguel

Nyxell is one of the leading online ticketing platforms in Spain, specializing in the nightlife industry. We are a rapidly growing startup.

As the Product and Technology Lead at Nyxell, working very closely with our CEO, I lead the product/technology team responsible for researching, implementing, and adapting the solutions our company needs. We identify these needs in the market through our relationships with the clubs that sell tickets (B2B). At the same time, we never lose sight of our unique value proposition: the NYXELL brand, which resonates strongly with Generation Z and offers a distinctive value proposition with a user-friendly app. This app allows users to easily purchase tickets to their favorite nightclubs and access pre-party games, such as our popular "Paco" game (B2C).

Having a B2B2C product on the market presents a significant challenge, both from a technological and business model perspective. Although we are a small team, we are highly motivated and, above all, by applying a product-oriented methodology and focusing on our customers' needs, we can achieve great things.

My role at Nyxell is very diverse, as is the case for everyone here, but it primarily focuses on leading the company's technology direction, supporting product development, and always seeking simple solutions to complex problems. My background in backend and cloud engineering allows me to support the team, especially in these areas.

- Relationship management with technology providers

- Analysis and reduction of technology costs

- Technology leadership within the project

- Product definition aligned with business needs

- Scrum Master: Sprint planning, estimation, and continuous measurement of team capability using KPIs

- Management of the product/technology team (4 engineers, one-on-one support, follow-up)

- Backend development

- Backend architecture using Kotlin and Spring Boot

- Cloud management and monitoring on AWS

- Mentoring in Dev/Ops and Backend to the rest of the team

Fortris is a company that offers self-custody services for cryptoassets. At Fortris, as a backend engineer, I have worked in the Innovation Team researching new solutions that allow us to reduce costs for our clients using different technologies that do not compromise the security of the assets.

I am currently working and leading initiatives in the team that implements these solutions. Helping to bring them to achieve success with the experience gained during my time in innovation team.

Some of the technologies used are: Java 17/21, Spring Boot 3, Spring Data Mongo, JUnit, Serenity BDD, MongoDB, BitcoinJ, Web3J (Ethereum & Smart-Contracts), Docker, Kubernetes, Git, Confluence, AWS, IBM Cloud... etc.

- Technological research and blockchain

- Analysis of blockchain functional requirements and translation into technical requirements based on the product's state

- TDD, BDD, and testing

- Coding best practices

- Backend development with Java and Spring Boot

- Use of Confidential Computing and Zero Trust Environments

- Working with libraries such as BitcoinJ and Web3J

- Derivation schemes with BIP-44

- Applications on testnets (both ETH and BTC)

- Interaction with smart contracts on ETH (specifically ERC-20 tokens)

Cobee is an Spanish benefits platform which brings a new benefits experience to each employee of companies. Helping them on emotional salary and happiness at work.

As SSE L4 I participate on decision making and architecture approach on different challenges that we had to resolve in Cobee. Also, I bring knowledge to rest of team and help to junior profiles to improve their skills.

Some used technologies: Node, TypeScript, Kubernetes, PostgresSQL, Mongo, AWS

- Product definition

- Backend development with TypeScript

- TDD and BDD

- Backend architecture definition

- Mentoring junior team members