Christopher Vallés Email & Phone Number

Mountain View, CA, US

San Francisco, California, US

• Technical Leader for the Site Reliability Infrastructure team supporting 11 engineers in two squads located across the globe.
• Year round mentor to each intern/co-op class of Summer, Fall, Winter and Spring as well as junior, mid-level and senior engineers. Mentorships are mainly focused on software development best practices, CI/CD.
• Setting technical direction and vision for my team’s OKRs whilst partnering with senior leaders and key stakeholders.
• Led the initiative to build software to provision and manage Trusted Platform Modules for our entire hardware deployment of more than 5500 servers both in commercial and FedRamp environments.
• Wrote software to automate the provisioning of SecureBoot, TrustedBoot and UEFI for our machines in our FedRamp cluster.
• Designed, architected and built a new software solution to replace our aging machine provisioning and maintenance scripts.

San Francisco, California, US

• Developed an internal provisioning system using PXE, Trusted Platform Module, Debian, TFTP, DHCP, Bash and Ansible to automate the operating system installation on our physical machines.
• Developed a utility in Python 3 and Docker that allows us to remotely configure the BIOS and the Trusted Platform Modules on our UCS servers.
• Active mentor to junior members of the SRE team.
• Ensure System Administrators progress up the set career ladder by assisting with training activities, providing feedback and coaching.
• Developed the internal dashboard for SSD monitoring and alerting as well as our internal disk replacement tool.
• Designed a proactive approach to disk replacement by stocking our most common used disks on each data center.

London, London, GB

• Initially, at Karhoo (Flit Technologies), I was part of the team that laid down the architecture and basic flows needed. After that initial design phase, I moved on to design the first CI/CD pipeline using Shippable..
• Established the platform architecture and the basic data flows for the main actions a user takes on our app.
• Documented the breakdown of the Golang/Python microservices, the data structures needed in Cloud Spanner, Cloud SQL and BigQuery, the message structure in Cloud Pub/Sub and the definition of public RESTful APIs.
• Worked on the definition of internal algorithms critical for the data we presented to our users.
• Created our internal CI/CD pipelines using Shippable and Docker.
• Leveraged my previous experience with payment gateways

• My responsibilities start at team management, setting goals, performance reviews, regular 1on1 with team members, internal learning program, show and tells, hackathons, roadmap management, regular meetings with key.
• Managed a team of 7 direct reports encompassing both the frontend and backend teams.
• Responsible for people management and an increased involvement with the business side of the company.
• Set employee goals, conducted performance reviews, hosted regular 1on1s with team members, developed an internal learning program, conducted show and tells, organized hackathons, roadmap management, met regularly with.
• Took care of all the server infrastructure and automation using Ansible, deployment of our code, managed the database servers, worked on some backend development in Python, supervised the sprints and its ceremonies and.
• Met regularly with the CEO and CMO to review the direction of the company and define strategies to meet our short and long term goals from a technical standpoint.

• At Ever Adventure I'm in charge of all the backend for our games. My responsibilities from the code point of view are maintenance, bug fixing, implementing new features and release new versions of our backend. On the.
• In charge of the backend for our games initially built in NodeJS and later on migrated to Python/Django.
• Performed maintenance, bug fixing, implemented new features and released new versions of our backend using ExpressJS, Memcache, MySQL, Nginx, HAProxy, Celery and Python.
• Managed the server infrastructure using Ansible.
• Tuned and supervised our MySQL servers and their replication and backups.
• Migrated from bare metal to a new infrastructure on Rackspace using Ansible.

London, London, GB

• At Hailo I'm part of the Data team working closely with stakeholders to support the business grow and provide the data needed in different systems.Working in GO I take part on improving and create new functionalities.
• Improved and created new functionalities in our internal services and deployed new storage systems for our data.
• Created, deployed and maintained a new set of tools to access and visualize our data.
• Consistently met our internal SLA for our event processing pipeline. The data was stored using a combination of MySQL, RedShift, Cassandra and Redis.
• Developed and delivered the new internal BI tool to allow extraction and analysis of our data. Built in Python/Flask, AngularJS and RedShift.
• Developed a new visualization plugin to provide heat maps of car traffic patterns in cities using taxi GPS locations.

• In this company I'm part of the studio backend team and we are focused on handling all the data and backend processes related with our games.We design, code, test and deploy all the backend side of the GREE UK mobile.
• Designed, coded, tested and deployed the backends for our mobile games using PHP.
• Developed internal tools used by game designers to design new game levels.
• Implemented map pathfinding, path validation, node placement and map generation algorithms using Python.
• Helping the BI team to get data from our multiple databases stored in MySQL by writing SQL queries and displayed them using Tableau.

• In this startup I’m in charge of all the technical lead, coordinating developers, designers, ux managers, seo, content team, i18n team and meeting with the CEO and business people to plan and develop the company.
• In charge of the technical leadership along with the management of a group of 8 employees made up of two developers, a designer, one UX manager, SEO expert and a content team of three people.
• Collaborated with the CEO and key business stakeholders to plan the company short and long term objectives.
• Migrated a backend system from legacy code to a new architecture by using Zend Framework, Amazon AWS APIs and Gearman for background job processing.
• Took care of the payment gateways and the parallel processing work queues.
• Maintained a test environment using PHPUnit, Mink, Goutte and Sahi.

Barcelona, Catalonia, ES

• In this startup I was mainly focused in modelmanagement.com and casting.net projects. modelmanagement.com is a high traffic social network to connect models, photographers and model agencies with more than 80k models.
• Maintained the payment gateways using PHP, Recur.ly and WorldPay.
• Incorporated payment functionalities like support for 6 currencies, coupon code management and payment reports.
• Increased performance of the backend utilizing Zend Framework and Akelos Framework.
• Maintained our physical servers hosted in Germany by Hetzner and virtual servers in AWS.
• Refactored out internationalization engine to support 23 languages.

Engelberg, Obwalden, CH

• In Vendo I was working on the frontend, backoffice and fulfillment engine of the platform. The project was used in adult content websites and online stores as a payment gateway and site management in a high traffic.
• Worked on the platform’s frontend, backend and fulfillment engine.
• Developed under Scrum Agile methodology.
• Implemented new features using Zend Framework.
• Directly responsible for the integration between the frontend and our internationalization and localization engine with the integration of the GeoIp library.
• Created a new fulfillment engine using a plugin-like architecture so we could interface with 3rd party distributors and warehouses.

Barcelona, Barcelona, ES

• In Transit Projectes I was a PHP Developer doing websites for universities and associations. I was also in charge of the company website and servers.
• Developed websites for universities and student associations.
• Managed the internal network and its services made of Apple XServer, Open Directory, Kerberos, DNS, printer servers and other supporting services.
• Managed the company’s web server and its website.