Senior Full Stack Engineer – PHP/Go + Flutter (m/f/x)

Your mission SIDES builds a cloud-based POS and payment operating system for the hospitality industry. We connect POS, payments, delivery platforms, kitchen tools, self-order solutions, apps, and webshops into one powerful, fully integrated platform - highly performant, scalable, and reliable, even under heavy load. Thousands of hospitality businesses rely on our technology every day to run their operations efficiently and digitally. Our tech stack: Flutter (mobile & web), Go, PHP, and AWS - including real POS hardware seamlessly integrated into our system. Your responsibilities: Deliver features end-to-end in a cross-functional team, from ideation and design to implementation, rollout, and operations Work across the entire stack, from backend to frontend Use AI tools (e.g., OpenCode, Copilot) responsibly and help establish best practices within the team Ensure operational quality with a strong focus on performance, security, stability, scalability, and observability Actively contribute to architectural and design decisions Support and grow the team through mentoring and pair programming Help define and improve standards for testing, code quality, and CI/CD Build clean APIs, well-designed data models, and high-performance user experiences Your profile Several years of experience as a Senior Full Stack Engineer Strong experience in backend development with PHP and/or Go, combined with hands-on experience in Flutter Ability and willingness to work across both backend (PHP/Go) and frontend (Flutter) as part of a unified stack Pragmatic, solution-oriented mindset with a strong focus on quality Solid understanding of MySQL, relational data models, and API design Experience with AWS and containerized deployments; Kubernetes is a plus Systems thinking across architectural and technological boundaries Independent, structured working style with strong analytical skills Fluency in English (required); German is a plus Perks & Benefits A recipe for success: With over a decade of experience in the gastronomy and delivery industry, SIDES is known as a true specialist in this field. Join a leading player and help shape the future of the market. Ownership & impact: We give you the space to bring in your ideas, grow your strengths, and take real responsibility. You’ll work independently while being supported by a strong and collaborative team. High-quality work setup: Modern hardware, ergonomic workstations, and a professional office environment ensure you can do your best work. Hungry for growth: Continuous learning matters to us. Through regular feedback cycles, we actively support your personal and professional development. A positive workplace culture: Enjoy a welcoming atmosphere, a trusting team culture, and our well-connected office in the heart of Berlin (Südkreuz). Workplace Environment Perks: Central office location in Berlin Regular office and team events Snacks and drinks in the office SIDES Library Dog-friendly workplace Onboarding lunch to help you settle in and connect with the team Your Benefits: €50 monthly benefit allowance - your choice: JobRad Deutschlandticket Company pension scheme (bAV) Wellhub Urban Sports Club: Discounted membership with access to fitness, classes, and wellness activities. Instahelp: Professional mental health support, available whenever you need it. Babbel: Free access to Babbel for flexible language learning. INCENT & Corporate Benefits: Attractive employee discounts and exclusive partner offers. Hybrid work: A mix of office and home office, depending on your role and team. Flexible working hours: Working hours that fit your daily life and offer real flexibility. December 24th & 31st off: Fully off without deducting vacation days. Company events: Our annual highlights - the SIDES Summer Party and our Christmas Get-together. Find Jobs in Germany on Arbeitnow

Your mission SIDES builds a cloud-based POS and payment operating system for the hospitality industry. We connect POS, payments, delivery platforms, kitchen tools, self-order solutions, apps, and webshops into one powerful, fully integrated platform - highly performant, scalable, and reliable, even under heavy load. Thousands of hospitality businesses rely on our technology every day to run their operations efficiently and digitally. Our tech stack: Flutter (mobile & web), Go, PHP, and AWS - including real POS hardware seamlessly integrated into our system. Your responsibilities: Deliver features end-to-end in a cross-functional team, from ideation and design to implementation, rollout, and operations Work across the entire stack, from backend to frontend Use AI tools (e.g., OpenCode, Copilot) responsibly and help establish best practices within the team Ensure operational quality with a strong focus on performance, security, stability, scalability, and observability Actively contribute to architectural and design decisions Support and grow the team through mentoring and pair programming Help define and improve standards for testing, code quality, and CI/CD Build clean APIs, well-designed data models, and high-performance user experiences Your profile Several years of experience as a Senior Full Stack Engineer Strong experience in backend development with PHP and/or Go, combined with hands-on experience in Flutter Ability and willingness to work across both backend (PHP/Go) and frontend (Flutter) as part of a unified stack Pragmatic, solution-oriented mindset with a strong focus on quality Solid understanding of MySQL, relational data models, and API design Experience with AWS and containerized deployments; Kubernetes is a plus Systems thinking across architectural and technological boundaries Independent, structured working style with strong analytical skills Fluency in English (required); German is a plus Perks & Benefits A recipe for success: With over a decade of experience in the gastronomy and delivery industry, SIDES is known as a true specialist in this field. Join a leading player and help shape the future of the market. Ownership & impact: We give you the space to bring in your ideas, grow your strengths, and take real responsibility. You’ll work independently while being supported by a strong and collaborative team. High-quality work setup: Modern hardware, ergonomic workstations, and a professional office environment ensure you can do your best work. Hungry for growth: Continuous learning matters to us. Through regular feedback cycles, we actively support your personal and professional development. A positive workplace culture: Enjoy a welcoming atmosphere, a trusting team culture, and our well-connected office in the heart of Berlin (Südkreuz). Workplace Environment Perks: Central office location in Berlin Regular office and team events Snacks and drinks in the office SIDES Library Dog-friendly workplace Onboarding lunch to help you settle in and connect with the team Your Benefits: €50 monthly benefit allowance - your choice: JobRad Deutschlandticket Company pension scheme (bAV) Wellhub Urban Sports Club: Discounted membership with access to fitness, classes, and wellness activities. Instahelp: Professional mental health support, available whenever you need it. Babbel: Free access to Babbel for flexible language learning. INCENT & Corporate Benefits: Attractive employee discounts and exclusive partner offers. Hybrid work: A mix of office and home office, depending on your role and team. Flexible working hours: Working hours that fit your daily life and offer real flexibility. December 24th & 31st off: Fully off without deducting vacation days. Company events: Our annual highlights - the SIDES Summer Party and our Christmas Get-together. Find Jobs in Germany on Arbeitnow