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Sheet 01 · Chad Koslovsky

React engineeringConnected customer experiences

Senior Frontend Technical Lead - React & Integrations · Concentrix

Hands-on product engineer and technical lead connecting React and TypeScript interfaces with APIs, identity and the business workflows behind them. Client delivery spans marketplace applications, shared operational systems and production support, with an infrastructure background that keeps releases and recovery in view.

Sheet 02

Cover letter

I call myself a technomancer. Technology has felt like magic to me since I was a kid, and I still get that feeling when a complicated collection of parts becomes something someone can actually use.

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Hi Concentrix team,

I call myself a technomancer. Technology has felt like magic to me since I was a kid, and I still get that feeling when a complicated collection of parts becomes something someone can actually use. I like figuring out how it works underneath, then making the experience feel simple on the surface.

Your React and integrations role sits right in that space. Ordering food sounds straightforward until you follow an order through identity, payment, the restaurant's systems and everything the business needs afterward. I like frontend work that asks me to understand that whole chain. The interface is where the customer experiences the result, so the decisions behind it matter just as much as how it looks.

Through Technomancy IT, I take client products from the first conversation through implementation, deployment and support. React, TypeScript and Node.js are central to that work. I build APIs and tenant-aware services, work through authentication and access boundaries, and bring in specialists where their craft helps the project. I enjoy being the person who can stay hands-on in the code while making the architecture understandable to the people building alongside me.

NuPrice is a good example of that ownership. From 2019 to 2021, I built and operated the full application for a long-term client, connecting marketplace and competitor data with user-defined pricing rules, accounts, subscriptions, billing and embedded support. I also handled the technical operations and customer support. Following the product into real use helped me see where a seemingly small interface decision depended on a much larger workflow. That is a useful perspective for the commerce integrations in your posting, even though I would be learning the particular restaurant and POS platforms you use.

At Office Evolution, I built centralized applications connecting CRM, provisioning, onboarding and service operations across locations. Working with the CEO, CIO and people in different departments meant understanding the handoffs before deciding what to automate. My current Technomancy platform carries that connected approach into support, scheduling, billing and infrastructure context, with TypeScript, Next.js and PostgreSQL behind it.

The operations side of my career helps too. I worked at FRII for years, ran the NOC, led engineering through a company purchase and later took sole systems-engineering responsibility for about a year. I migrated workloads into Docker and Kubernetes, handled escalations and ran the SOC 1 and SOC 2 audits. I bring that same habit to software: understand the failure, communicate clearly and keep going until the system is supportable again.

I'm based in Milliken, and the Denver preference works for me. I'd enjoy working with a team that takes the customer experience seriously and gives its engineers responsibility for the system around it. Making those moving parts feel clear and dependable is the kind of magic I want to keep building. Let's talk.

Chad

Sheet 03

Experience

Technomancy IT LLC · 2015-Present

Founder / Product Engineer / Systems Lead

Lead client products from discovery through React/TypeScript interfaces, APIs and production support. Build tenant-aware services and coordinate specialist contributions.

Deep dive

I lead a referral-based technical practice, translating client needs into products and systems I also help operate. React and TypeScript interfaces sit alongside APIs, data, infrastructure and support; the work requires understanding how a customer uses the system as well as how it is built.

Application and API authentication work includes OAuth/OIDC, PKCE and token exchange. Tenant-aware shared services connect client-facing products and internal operations while keeping their access boundaries distinct. I bring in specialists where their craft helps the project and make the system and delivery responsibilities clear to contributors.

NuPrice | Client engagement within Technomancy IT · 2019-2021

Product Engineering and IT (Long-Term Contract)

Built and operated a marketplace application connecting pricing rules, accounts, subscriptions, billing and support. Owned the technical delivery throughout a long-term client engagement.

Deep dive

NuPrice was a long-term client engagement from 2019 to 2021, beginning while I was still at FRII. I built and operated the reseller application and owned its billing, customer support and technical operations.

The application brought marketplace and competitor data into user-defined repricing rules and automated price decisions, with monitoring and analytics alongside accounts, subscriptions, a CMS and embedded support. That sustained responsibility meant following issues from the customer-facing workflow through the application and its operation. The product was acquired; my role was the client’s technical delivery, not ownership of the company.

Front Range Internet Inc. · 2015-2020

Senior Systems Engineer / Datacenter Architect

Ran the NOC, modernized workloads into Docker and Kubernetes, and handled production escalations. Ran SOC 1/SOC 2 audits and kept engineering procedures clear through organizational change.

Deep dive

At Front Range Internet Inc., I ran the NOC and was a lead engineer through a company purchase. Later, after the senior engineer above me left, I took sole systems-engineering responsibility for approximately a year, with the NOC continuing first-line coverage and escalating issues to me. That was one period within my 2015–2020 tenure, not the whole engagement.

I migrated workloads from Hyper-V and VMware ESXi to Docker and Kubernetes, upgraded server and firewall infrastructure, and owned recovery verification, monitoring, escalations and engineering procedures. Terraform and Ansible supported repeatable infrastructure work. I also ran the SOC 1 and SOC 2 audits and worked with the CEO and CIO while keeping the operating environment supportable through change.

Office Evolution · 2014-2015

Systems / Software Engineer

Built SQL/MongoDB applications joining CRM, provisioning, onboarding and service operations across locations. Worked with the CEO and CIO to turn departmental handoffs into shared workflows.

Deep dive

Office Evolution’s operational work crossed departments and locations. I built centralized SQL- and MongoDB-backed applications connecting CRM, provisioning, onboarding and service operations so those handoffs were represented in shared systems.

The role combined software with the architecture around it: learning how people needed to work together, translating the handoffs into explicit workflows and supporting the surrounding systems across locations and client environments. I worked with the CEO and CIO as part of that delivery.

PlumChoice / Everon · 2012-2014

Network & Systems Engineer

Engineered and supported business networks and endpoints for managed-service clients. Built diagnostic tooling and handled on-call issues directly with owners and users.

Deep dive

At PlumChoice / Everon, I worked as a network and systems engineer across managed-service clients, supporting networks and endpoints and communicating directly with business owners and end users. The work required diagnosing a problem in its business context rather than stopping at a single device.

I used monitoring and diagnostic tooling, built support tools around recurring operational needs, and handled on-call issues. Working across client environments developed the practical troubleshooting and communication I still bring to software delivery and production support.

IBM · 2010-2012

Infrastructure and Systems Focal

Supported shared enterprise infrastructure and coordinated changes across application, vendor and business teams. Automated audit/backup workflows and managed virtualization labs.

Deep dive

At IBM, I was the infrastructure and systems focal for shared enterprise environments. The work crossed application, infrastructure, vendor and business teams, with incidents and changes requiring coordinated ownership rather than isolated fixes.

I automated audit and backup workflows, managed virtualization test labs and hosted desktop platforms, and supported access, change and escalation work around shared infrastructure. That experience established an operating perspective that complements my later full-stack product work.

Sheet 04

Selected work

Long-term client engagement · 2019-2021

NuPrice | Marketplace-to-customer workflows

Built the client application connecting marketplace inputs and pricing rules with accounts, subscriptions, billing and embedded support. Owned delivery and ongoing technical operations.

Deep dive

NuPrice was a long-term client engagement from 2019 to 2021, beginning while I was still at FRII. I built and operated the reseller application and owned its billing, customer support and technical operations.

The application brought marketplace and competitor data into user-defined repricing rules and automated price decisions, with monitoring and analytics alongside accounts, subscriptions, a CMS and embedded support. That sustained responsibility meant following issues from the customer-facing workflow through the application and its operation. The product was acquired; my role was the client’s technical delivery, not ownership of the company.

NuPrice in the client work overview ↗

Founder-built platform · In development

Technomancy | Shared business services

Building TypeScript/Next.js/PostgreSQL software joining support, CRM, scheduling and billing through tenant-aware services. Implemented versioned release and recovery-verification tooling.

Deep dive

Technomancy is my technical practice and the client-operations platform I am building around it. TypeScript, Next.js and PostgreSQL connect support, CRM, scheduling, billing and infrastructure context. Tenant-aware shared services keep client and internal access boundaries clear.

The delivery tooling derives container image tags from Git, applies database migrations, records deployment status and checks health and public HTTP responses. Separate restore-verification tooling checks a backup checksum and restores into a disposable PostgreSQL instance. These are implemented capabilities, not a claim that every release or scheduled restore test passed.

Technomancy product overview ↗

Employment project · 2014-2015

Office Evolution | Integration across departments

Built centralized SQL/MongoDB applications joining CRM, provisioning, onboarding and service operations. Worked with company leadership to turn cross-team handoffs into explicit workflows.

Deep dive

Office Evolution’s operational work crossed departments and locations. I built centralized SQL- and MongoDB-backed applications connecting CRM, provisioning, onboarding and service operations so those handoffs were represented in shared systems.

The role combined software with the architecture around it: learning how people needed to work together, translating the handoffs into explicit workflows and supporting the surrounding systems across locations and client environments. I worked with the CEO and CIO as part of that delivery.

Sheet 05

Capabilities

  • React and TypeScript; reusable customer-facing interfaces
  • Node.js, API integrations and tenant-aware services
  • OAuth/OIDC, access boundaries and connected business workflows
  • CI/CD, container delivery, monitoring and production troubleshooting
  • Client discovery, architecture decisions and cross-team delivery