Senior Full Stack Developer

Role OverviewWe’re looking for a Senior Full Stack Developer to take end-to-end ownership of product development across backend and frontend systems. You’ll work across the full development lifecycle — from architecture and implementation through to deployment — partnering closely with Product, Design, and Engineering.This role is backend-strong, with frontend capability expected.Must Have (Non-Negotiable)Strong hands-on experience with both Java (30%) and Python (70%) in production environments8+ years of experience building scalable, high-quality software applicationsDeep understanding of backend architecture and RESTful API designStrong experience with relational databases (PostgreSQL preferred)Hands-on experience with AWSProven ability to design, build, and ship end-to-end features independentlyNice to HaveTypeScriptPHPExperience with modern frontend frameworks (React or Vue)ElasticsearchSnowflake or modern data warehousing platformsFamiliarity with GCPKey ResponsibilitiesProduct Development:Lead the development efforts, taking ownership of the entire product lifecycle from ideation to implementation.Collaborate with cross-functional teams, including product managers, designers, and engineers, to deliver high-quality and user-friendly products.Technical Leadership:Apply expertise in technologies to drive the adoption of new architectures and design patterns for our products.Mentor and guide junior developers, fostering a culture of continuous learning and improvement within the team.Innovation and Best Practices:Actively contribute to the evolution of our technical stack, ensuring it aligns with industry standards and supports the scalability and maintainability of our products.Cross-Functional Collaboration:Work closely with UX/UI designers to translate design concepts into responsive and intuitive user interfaces.Your Professional Qualifications🌟 Core Experience & Technical SkillsExtensive Experience: 8+ years of professional experience as a Software Engineer delivering high-quality, scalable applications.Mandatory Backend Expertise: Proven, in-depth experience with the core backend languages: Python and Java.Database Proficiency: Strong experience with relational databases, specifically PostgreSQL (Postgres).Search & Indexing: Direct experience designing, implementing, and optimizing solutions using Elasticsearch.Frontend Development (Highly Desired): Experience with Javascript and using functional frameworks such as React.js or Vue.js.Note: React is specifically called out as a 'Nice to Have' but is included here due to its strong market relevance.Cloud Computing: Hands-on experience with at least one major cloud platform, with AWS being mandatory, and familiarity with GCP as a bonus.Data Warehouse (Nice to Have): Experience working with modern data warehousing solutions like Snowflake.🏗️ Architecture & DesignComponent Design: Experience with a shared component design paradigm utilizing controller-based patterns.Application Implementation: Proven track record of implementing applications effectively using established style guides and detailed wireframes.Backend Principles: Strong understanding of backend architecture principles and best practices for RESTful design.📈 Development Methodologies & TeamworkAgile Development: Comfortable working in Agile environments and proficient in Test-Driven Development (TDD) methodologies.Collaboration: Highly team-oriented and collaborative, with the proven capacity to mentor junior team members and elevate team skill levels.Leadership & Communication: Demonstrated leadership ability combined with excellent written and verbal English skills.About MozaiqMozaiq is a fully remote team with roots in the US and Eastern Europe. We build powerful, cross-functional teams that support some of the most sophisticated tech and marketing organizations in the world.🌐 Global Family: A tight-knit, multicultural, remote-first team💼 Meaningful Work: Support world-class brands and products🤝 Inclusive Culture: We prioritize collaboration, clarity, and growthPerks & Benefits🌍 Work from anywhere⏳ Flexible hours🏝 Paid time off + holidays🛫 Team offsites🩺 Subsidised Health insurance