Homeoffice Tech Lead Platform Architect - Contractor bei Appnovation Technologies

About the Role

Appnovation Technologies is seeking a highly skilled and experienced Tech Lead / Platform Architect - Contractor - to join our forward-thinking team, based in Canadá (Remote). This role is crucial in delivering technical excellence and innovation across a transformational loyalty and engagement platform serving millions of users in the financial services sector. As the Tech Lead / Platform Architect, you will own the end-to-end technical solution for a high-volume transaction processing platform, ensuring it meets stringent latency (<200ms), reliability (99.9% uptime), and security (PCI-DSS) requirements. You will lead the technical strategy, guide implementation decisions, and ensure seamless integration between multiple systems including loyalty engines, marketing automation platforms, and 60+ point-of-sale systems. This role requires strong technical leadership to bridge business requirements with scalable, secure architectural solutions

Key Responsibilities:

• Defining and owning the overall platform architecture for a system handling 10,000+ transactions per second
• Leading technical decisions on microservices decomposition, event streaming patterns, and API contract design
• Ensuring sub-200ms response times through performance architecture and optimization strategies
• Designing integration patterns for 60+ POS systems and partner loyalty programs
• Establishing security architecture to meet PCI-DSS compliance requirements
• Collaborating with client architects (Octopus Cards Limited and AIGENS) to ensure seamless platform integration
• Mentoring development team and conducting architecture reviews
• Creating and maintaining technical documentation including architecture decision records (ADRs)
• Managing technical risk assessment and mitigation strategies
• Leading vendor technical discussions and integration planning sessions.

What we are looking for

Must-Have:

• At least 8-10 years of experience in distributed systems architecture with focus on high-volume transaction processing
• Proven track record architecting platforms serving 1M+ users with strict latency requirements
• Strong expertise in AWS cloud architecture including EKS, Aurora, ElastiCache, and API Gateway
• Experience with event-driven architectures using Kafka or similar streaming platforms
• Deep understanding of microservices patterns including circuit breakers, saga patterns, and service mesh
• Hands-on experience with PCI-DSS compliance and security architecture
• Background in financial services, payment processing, or loyalty platforms preferred
• Experience leading technical teams and driving architectural decisions.
  
  

Nice-to-Have:

• AWS Solutions Architect Professional certification
• Experience with loyalty or rewards program platforms
• Knowledge of Adobe Journey Optimizer or Braze
• Experience with high-frequency trading or real-time payment systems
• Understanding of POS system integration patterns
• Background in migrating large-scale systems (1M+ users).
  
  

Who you are

• You are a strategic technical leader who combines deep architectural expertise with practical implementation experience. 
• You thrive in complex, high-stakes environments and can effectively communicate technical concepts to both engineering teams and business stakeholders.

What Appnovation Offers 

• Challenging and rewarding work with real impact
• Direct Access to Cutting-Edge AI Platforms
• Diverse and Inclusive Culture 
• Growth opportunities for personal and professional development
• A collaborative and innovative work environment where your ideas are valued
• Exposure to exciting projects and high-profile clients
• Supportive work environment with access to company leaders