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Amine KiliAK

Amine Kili

Java Software Architect/Senior Software Engineer

€650/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Amine

Software Engineer and Solutions Architect with 7+ years of experience designing distributed systems and microservices architectures for enterprise.

Technical Expertise: Java, Spring Boot, AWS, MongoDB, PostgreSQL, and Redis.
Key Achievements:
  • Designed highly available systems serving millions of concurrent users with sub-100ms latency
  • Led technical teams in 3 startups, delivering solutions for Fortune 500 clients (HP, Cisco)
  • Improved infrastructure scalability (5x) while reducing costs by 30%
  • Implemented distributed tracing, reducing MTTR by 70%
  • Built high-performance data pipelines processing billions of records
  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • Impressive AI
    Solutions Architect Java
    SOFTWARE PUBLISHING
    January 2025 - November 2025 (10 months)
    California City, United States
    • Led technical strategy and product roadmap as CTO; managed cross-functional teams in engineering, data science, and operations; represented the company at Station F
    • Architected an LLM-agnostic multi-agent system using langchain4j with dynamic model selection, achieving response times <200ms
    • Built scalable knowledge graphs with Neo4j, implementing semantic search for multi-tenant contextual retrieval
    • Provisioned multi-region AWS and Azure cloud infrastructure: VPCs, subnets, security groups, load balancers (ALB/NLB), route tables
    • Designed fault-tolerant architecture with Resilience4j circuit breakers, exponential backoff retries, graceful degradation, health checks for zero-downtime deployments
    • Architected data layer with PostgreSQL for transactions, MongoDB with sharding for documents, Redis for sub-millisecond caching with TTL eviction
    • Developed Spring Boot microservices with REST APIs, dependency injection, aspect-oriented programming, custom exception handling
    • Implemented observability with Prometheus (JVM, business metrics), Grafana dashboards, Datadog APM for distributed tracing
    • Built CI/CD pipelines with GitHub Actions: unit/integration/e2e tests, Trivy security scan, Docker builds, blue-green deployments to AWS ECS
    • Designed multi-tenant IAM with Keycloak OAuth2/OIDC, RBAC policies, tenant isolation, PCI DSS and SOC 2 compliance
    Technologies: Kotlin, Java, Spring Boot, langchain4j, LLMs (GPT-4, Claude, Llama), Neo4j, PostgreSQL, MongoDB, Redis, Vector DBs (Azure AI Search, Weaviate), Keycloak, AWS (ECS, EC2, RDS, ElastiCache, S3, CloudWatch, ALB), Azure (VM, CosmosDB), Docker, Prometheus, Grafana, Datadog, ELK, Mixpanel, GitHub Actions
    Java Kotlin React AWS Spring boot
  • GameGrid
    Principal Software Architect & Engineering Manager
    January 2023 - December 2024 (1 year and 11 months)
    Remote, OR, USA
    • Led engineering team through scaling phase; managed technical hiring, onboarding, and mentorship; partnered with leadership on technical roadmaps
    • Architected distributed microservices platform with Java and Spring Boot: domain-driven design, REST APIs with OpenAPI, asynchronous processing via AWS SNS/SQS
    • Built MongoDB data layer with sharding for horizontal scalability, aggregation pipelines for analytics, optimized indexes reducing latency from seconds to milliseconds
    • Implemented saga pattern for distributed transactions with compensating logic, idempotent APIs with deduplication for exactly-once semantics
    • Deployed AWS X-Ray distributed tracing with correlation IDs, trace sampling, service dependency maps, reducing MTTR by 70%
    • Built crypto ledger-based payment system with PostgreSQL ACID transactions, event sourcing audit trails, webhook processing with retry logic
    • Optimized analytics for billions of records: MongoDB aggregation pipelines, AWS Lambda batch jobs, materialized views, composite indexes reducing latency by 85%
    • Developed ML fraud detection with scikit-learn feature extraction, real-time scoring <50ms, threshold-based alerts reducing false positives by 40%
    • Implemented Redis ElastiCache with cache-aside pattern, TTL invalidation, cache warming maintaining p99 latency <100ms, reducing DB load by 70%
    • Built CI/CD with GitHub Actions: unit/integration/e2e tests, multi-stage Docker builds, AWS ECS deployments, blue-green releases with automated rollbacks
    Technologies: Java, Spring Boot, MongoDB, PostgreSQL, Redis, AWS (ECS, Lambda, SNS, SQS, X Ray, CloudWatch, ElastiCache, RDS, S3, ALB), Docker, GitHub Actions, ELK Stack, Grafana, scikit-learn, Python
    Java AWS SQL external-api-integration database-management
  • IlemGroup
    Senior Software Engineer & Tech Lead
    March 2022 - April 2024 (2 years and 1 month)
    Paris, France
    • Led architectural design sessions; performed technical feasibility analysis; established code review standards adopted company-wide
    • Architected AWS ECS infrastructure with service discovery (Cloud Map), Application Load Balancers, auto-scaling policies achieving 99.9% availability
    • Implemented domain-driven design with bounded contexts, event-driven communication via AWS SNS/SQS, CQRS for read/write separation
    • Built observability platform: CloudWatch metrics, X-Ray distributed tracing, structured logging, PagerDuty integration reducing MTTR by 60%
    • Mentored engineering team through technical interviews, onboarding, knowledge sharing on microservices patterns and AWS best practices Technologies: Java, Python, Spring Boot, AWS (ECS, Lambda, SNS, SQS, Cloud Map, CloudWatch, X Ray), Docker, CI/CD
    Java AWS Spring boot React Docker

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Education

  • Engineering Degree in Complex and Advanced Systems
    CentraleSupélec
    Diplôme d'Ingénieur en Systèmes Complexes et Avancés
  • Complex Systems Engineering
    École Centrale Casablanca
    Ingénierie des Systèmes Complexes

Skill set

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