# Daniel Costantini

> Senior Software Engineer | Cloud Infrastructure & Backend | Python, AWS, Kubernetes

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/danielcostantini

Senior Software Engineer with 6 years of experience building scalable cloud infrastructure and backend systems. Deep expertise in Python, AWS, Terraform, and Kubernetes with a proven track record as sole technical owner of mission-critical services.

I have a unique combination of software engineering depth with hands-on operational experience from managing large-scale deployments at major venues, which provides me with a grounded perspective to system design. I focus on building reliable, scalable systems while bridging the gap between development and operations.

I specialize in:
- Cloud infrastructure architecture (AWS, Kubernetes, Terraform)
- Backend development (Python, Flask, SQLAlchemy, REST/GraphQL APIs)
- DevOps and automation (CI/CD, GitOps, Infrastructure-as-Code)
- Test automation and quality assurance
- Field operations and real-world system deployment

## Work Experience
### Senior Software Engineer @ Mixhalo
Jan 2025 – Present | San Francisco, CA
Promoted to Senior Software Engineer in recognition of multi-year technical ownership of critical services, infrastructure leadership, and cross-functional collaboration.
- Serve as sole technical owner of critical Python-based configuration management service for 3+ years, architecting for horizontal scalability and resolving performance bottlenecks; handle thousands of concurrent connections with sub-100ms latency for live events
- Lead AWS infrastructure expansion using Terraform and Kubernetes (EKS), deploying multi-region services across API Gateway, Aurora, EC2, and ElastiCache with modular IaC patterns and GitOps-based continuous delivery via Helm charts and ArgoCD
- Develop custom pytest plugin enabling parallel test execution with intelligent dependency-aware ordering, significantly reducing CI/CD pipeline execution time

### Software Engineer @ Mixhalo
Jan 2023 – Jan 2025 | San Francisco, CA
Advanced to Software Engineer role, taking on broader technical responsibilities across backend development, infrastructure automation, and quality assurance.
- Apply Test-Driven Development (TDD) methodology to transform 5,000+ lines of untested legacy Flask-restx and SQLAlchemy code from inconsistent, duplicative implementation to readable, extensible system with comprehensive test coverage
- Refactor and expand AWS infrastructure using Terraform and Kubernetes (EKS), deploying multi-region services across API Gateway, Aurora, EC2, and ElastiCache with modular Infrastructure-as-Code patterns
- Create Appium-based test automation for iOS and Android applications testing diverse scenarios including network connectivity changes and permission modifications, substantially reducing manual QA effort and accelerating release cycles
- Collaborate with Design, Mobile, Marketing, Operations, and Sales teams to align technical implementation with business objectives

### Software Engineer | Professional Services Engineer @ Mixhalo
Jan 2019 – Jan 2023 | San Francisco Bay Area
Initial role at Mixhalo combining software engineering with hands-on field deployment operations, bridging product development with real-world venue implementations.
- Lead end-to-end deployment planning and execution for venues serving up to 20,000 attendees including Red Rocks Amphitheatre and Stern Grove, handling RF site surveys, antenna placement optimization, network configuration, and complex audio-to-network integration
- Design comprehensive acceptance testing framework covering the complete signal flow: on-site servers to backend infrastructure and access points, through to iOS and Android applications
- Translate field deployment insights from hands-on venue operations into actionable product requirements, influencing roadmap priorities based on real-world operational constraints
- Mentor professional services engineers on deployment processes, on-site troubleshooting, and technical problem-solving methodologies

### Network Support Manager @ Cisco Meraki
Jan 2017 – Jan 2019 | San Francisco Bay Area
- Led team of 7-12 Network Support Engineers, providing technical mentorship, case escalation support, and driving
operational improvements
- Established 1:1 coaching frameworks and team processes that improved individual performance and customer satisfaction
metrics
- Served as technical escalation point for enterprise customers, defining resolution strategies for complex network issues
across Meraki’s complete product portfolio
- Collaborated with engineering teams to prioritize bug fixes and feature requests based on customer impact analysis

### Network Support Engineer @ Cisco Meraki
Jan 2016 – Jan 2017 | San Francisco, California
- Provided expert technical support for Cisco Meraki’s complete product portfolio (wireless APs, firewalls, switches, cameras, MDM, VoIP)
- Identified, reproduced, and documented software defects with comprehensive technical reports, contributing to product
stability improvements
- Troubleshot complex multi-site network deployments, developing deep expertise in wireless protocols, routing, and security

### Technical Documentation Specialist @ Royal Australian Air Force
Jan 2015 – Jan 2016 | Richmond, New South Wales, Australia
Responsible for the review and overhaul of maintenance management doctrine to increase their readability and align their content with their original intent. I was selected for this position due to my demonstrated knowledge of technical administrative procedures, their high-level purpose, and their application in the workplace. This role requires information gathering from all ranks and positions in the workplace, which has further developed my communication skills.

### Deployable IT Technical Supervisor @ Royal Australian Air Force
Jan 2012 – Jan 2015 | Richmond, New South Wales, Australia
Managed teams ranging from 10 to 30 IT specialists for the maintenance and installation of ruggedized, deployable IT infrastructure for use in the field. 

My management performance resulted in selection to lead a short notice, high pressure project for the preparation of one such deployable IT system for transport and use in the Middle East. 

Shortly after my successful management of the aforementioned project, I was selected to fulfil the role of one of my supervisors while they were on long service leave, during which time I developed and implemented a new management framework inspired by agile concepts to address inefficiencies in our previous approaches.

### Kandahar IT Infrastructure and Trunking Supervisor @ Royal Australian Air Force
Jan 2013 – Jan 2013 | Afghanistan
I led a team of three specialists to deliver ICT services for all Australian forces at Kandahar Airfield, Afghanistan. Duties included maintenance, expansion, and decommissioning of two parallel classified networks that spanned the entire base. My technical and managerial performance earned a formal commendation from the commander of all Australian forces in the Middle East (Commander Joint Task Force 633).

### Tactical Air Defence Radar System Technician @ Royal Australian Air Force
Jan 2008 – Jan 2011
Responsible for performance of maintenance activities on deployable radar systems, rack-mounted radio systems, proprietary remote radio access panels, data communications, radio electronic counter-counter measures, and cryptographic systems. Liaised with end users to determine fault symptoms to facilitate resultant troubleshooting. My performance resulted in my selection for promotion in 2012.

### Kandahar Tactical Air Defence Radar System Technician @ Royal Australian Air Force
Jan 2009 – Jan 2009 | Afghanistan
Responsible for performance of maintenance activities on deployable radar systems, rack-mounted radio systems, proprietary remote radio access panels, data communications, radio electronic counter-counter measures, and cryptographic systems. Maintained 24hr serviceability of the radar system through shift work and optimisation of fault response and rectification activities

### Data Processing and Display Technician | Radio Technician @ Royal Australian Air Force
Jan 2006 – Jan 2008
Liaised with end users to determine fault symptoms and facilitate resultant troubleshooting. Conducted maintenance on data processing and display systems, rack-mounted radio systems, MS Server 2003 and Unix server environments, data communications equipment, radio electronic counter-counter measures, and cryptographic systems. Gained experience on a wide range of technical equipment, and developed adaptation and client management skills.


## Education
### Bachelor of Engineering (Honours) - BEng(Hons) in Computer systems
University of Southern Queensland

### Kinross Wolaroi School, Orange


## Contact & Social
- LinkedIn: https://linkedin.com/in/daniel-costantini-23595675

---
Source: https://flows.cv/danielcostantini
JSON Resume: https://flows.cv/danielcostantini/resume.json
Last updated: 2026-04-01