Senior Software Engineer (C#) at Yld

Senior Software Engineer (API) - Portugal (Remote) Location: Portugal, Remote Department: Engineering Employment Type: Permanent About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done. About the role: As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and enthusiastic. You should be skilled in problem-solving and experienced in designing scalable, resilient, and fault-tolerant architectures. You’re also an effective communicator and a strong team player. Together with your team, you’ll thrive in a fast-paced engineering environment, delivering outstanding results and exciting projects. Your day-to-day responsibilities: • Architecting, designing, building, and delivering highly available, always-on, zero-downtime API products and solutions; • Collaborating with engineers, product owners, and other colleagues to seek exciting and results-oriented problems for delivering value; • Writing clear, maintainable code that will scale; • Contributing to production operation and monitoring of systems, and aware of SLAs; • Learning, growing, and mentoring other engineers through code reviews and pair programming to accelerate their technical mastery; • Proactively looking for ways to improve team processes; • Driving good practices within your team and making an impact on the whole department. Preferred qualifications: • Experience of implementing high-quality cloud software solutions, i.e., Azure, AWS, GCP; • An awareness of a variety of cloud architectures; • A good understanding of consistency, reliability, and scalability of systems without downtime; • An understanding of design patterns and API design; • Experience in system design, design patterns, API design, and implementation of large-scale distributed systems in the cloud, from IaaS containers to PaaS; • Experience of system reliability and stability patterns; • Hands-on experience with both SQL and NoSQL databases; • The know-how to write readable, idiomatic, and maintainable C#; • Experience implementing sophisticated API products; • Experience with agile methodologies. Nice to have: • Experience in building high-performance API products; • FinTech experience; • Experience launching APIs to both internal and external consumers; • Experience building cloud systems (especially Azure). You should apply if you are: • A T-shaped engineer, but will major in C#; • Product-oriented; • Focused on quality and will know what it means to ship high-quality code; • Self-motivated, proactive, and always looking for ways to improve yourself, the team, and the product; • Diplomatic and emotionally intelligent, you’ll have the ability to listen and be open to others’ points of view; • A good communicator, both in writing and verbally. You’ll be able to explain technical ideas and concepts in business-friendly language; • A genuine believer in diversity, fairness, and including everyone; • Legally able to live and work in Portugal. Benefits you'll receive: • Company Private Health Care • Enhanced fully paid maternity and paternity leave for up to 6 months • 25 days annual holiday (excluding Public Holidays) • €2000 annual allowance for Training/Conferences • €300 annual allowance for additional hardware • Mental Health support: access to Oli app • Meditation/Sleep support: Headspace or Calm app subscription • Bonus (depending on Company performance and results) • Company laptop • Generous referral schemes Our typical Recruitment Process looks like this: • 1st Interview with someone from the Talent team (30/45 mins) • Take-Home Challenge (~1h) • Technical Interview with our Senior Developers (1h30) Get a glimpse of what it's like working at YLD! 🤳 Check out our LinkedIn page We live and breathe our values, and know you will too: • Growing every day • Including everyone • Relationships built on honesty and ethics • Inspiring solutions • Winning together We’re an equal-opportunity employer and value diversity in all its forms. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, pregnancy or maternity, age, marital status, or disability. We also offer a remote-first working environment, with flexible working and work–life balance as standard for all employees.