About me

I'm an Engineering Manager at Tricentis, based in Brno, Czech Republic. I build and lead teams that ship developer tooling used by hundreds of clients worldwide—from instrumentation agents and code coverage systems to test framework integrations across the JavaScript ecosystem. I've driven technical adoption with 20+ enterprise accounts across finance, tech, consulting, and retail.

Alongside my full-time role, I've been the sole engineer at S-Class Media for 4+ years—building and operating 10+ products and the entire infrastructure from scratch. That includes a donation-powered search engine (web, mobile, browser extensions), a custom analytics platform integrating major ad networks with AI-powered insights, and multiple content platforms—plus CI/CD, observability, secrets management, and server infrastructure.

Before that, I spent years as a full-stack engineer shipping products across very different domains—agtech platforms with geospatial mapping, fitness marketplaces, SaaS applications, Electron desktop apps, and more. I've freelanced for 30+ clients on Upwork and worked at startups, consulting agencies, and enterprise companies. That range taught me to pick up new tech fast and deliver in any environment.

I majored in Communication Networks and Security, and that foundation shapes how I approach infrastructure, CI/CD pipelines, and system design. I've worked across the full stack—Vue.js, React, Node.js, TypeScript, Go, AWS, Docker, DynamoDB, PostgreSQL—and I'm comfortable going deep wherever the problem is.

Outside work, I'm energized by side projects—building with Raspberry Pi, exploring what's possible with AI, and hitting the gym. I believe the best engineers keep shipping at work and keep learning everywhere else.

I build tooling by day and side projects by night—and I'm still figuring out what AI can do before breakfast.

What I'm doing

  • Engineering leadership

    Managing engineers, setting technical direction, and owning delivery—from sprint planning to enterprise client onboarding.

  • Backend & APIs

    Node.js, TypeScript, Go, and serverless (AWS Lambda, DynamoDB, S3). REST APIs, event-driven services, and systems built for scale.

  • Test automation & instrumentation

    Built integrations for Jest, Cypress, Playwright, WebDriverIO, and more. Deep experience with code coverage, agent instrumentation, and CI/CD pipelines.

  • Frontend development

    Vue.js, React, TypeScript, and Quasar. Customer-facing platforms, admin dashboards, and cross-platform mobile apps with Capacitor.

  • DevOps & infrastructure

    Docker, AWS, CI/CD pipelines, and infrastructure automation. Background in Communication Networks and Security.

  • Freelance & consulting

    30+ projects on Upwork with perfect ratings. Full-stack delivery across SaaS, fitness, e-learning, and geospatial domains.

Companies I've worked with

  • Tricentis

    Engineering Manager · Owning code coverage and instrumentation across the JS ecosystem. Built integrations for Cypress, Playwright, Jest, WebDriverIO, and AWS Lambda. 100+ clients served.

  • S-Class Media

    Lead Software Engineer · Sole engineer. Built 10+ products (search engine, analytics platform, content sites, mobile apps, browser extensions) and the entire infrastructure from scratch.

  • Sourcico

    Software Engineer · Consulting agency; embedded at agmatix and SeaLights as a full-stack engineer over 4+ years of continuous client work.

  • SeaLights (acquired by Tricentis)

    Senior Software Engineer · Built the JS/TS instrumentation agents that became core to Tricentis. Developed initial Playwright and Cypress integrations and scaled enterprise adoption.

  • agmatix

    Frontend Developer · Built the customer-facing Vue.js platform for agricultural labs and engineers. Owned the Mapbox geospatial integration end-to-end.

  • Projektt Technologies

    Full Stack Developer · Built a multi-platform fitness marketplace—web app, trainer dashboard, and mobile app. Vue.js, Firebase, AWS Lambda, DynamoDB, Elasticsearch.

  • Upwork (Freelance)

    Freelancer · 30+ projects, 3,500+ hours, perfect client ratings. Full-stack delivery across SaaS, fitness, e-learning, and geospatial domains.

Resume

Education

  1. University for Information Science and Technology "St. Paul the Apostle"

    2017 — 2022

    Bachelor's degree, Communication Networks and Security. Ohrid, North Macedonia. Thesis: "Single-Table Approach in NoSQL Databases" — explored single-table design patterns in DynamoDB and MongoDB for simplified data modeling and query efficiency.

  2. High School Dr. Ibrahim Temo

    2013 — 2017

    Struga, North Macedonia.

  3. Be the leader of your life

    2017 · Erasmus+ exchange · Romania

    Erasmus+ exchange for young leaders. Participated during high school in Romania.

Experience

  1. Engineering Manager

    Jul 2024 — Present

    Tricentis · Brno, Czechia (on-site) & remote. Own code coverage and instrumentation across the JavaScript ecosystem—browser and Node.js agents serving 100+ clients. Built integrations from scratch for Cypress, Playwright, WebDriverIO, and AWS Lambda; rewrote Jest instrumentation for performance and accuracy. Drove development of the browser agent and contributed to the Go Collector service, reducing network overhead and improving CI/CD pipeline stability. Led technical onboarding and adoption for 20+ enterprise clients across finance, tech, and consulting.

  2. Software Engineer

    Jun 2021 — Oct 2025

    Sourcico (consulting agency) · Remote. Embedded as a full-stack engineer at client companies—agmatix (agtech) and SeaLights (test intelligence, later acquired by Tricentis). Delivered production features across Vue.js, Node.js, TypeScript, Docker, and AWS over 4+ years of continuous client engagements.

  3. Lead Software Engineer

    May 2021 — Present · Part-time

    S-Class Media · Remote. Sole engineer building and operating the entire product and infrastructure stack for a performance marketing company. Architected and shipped 10+ products from scratch—including Cheerie (a donation-powered search engine with web app, iOS/Android apps, and browser extensions for Chrome, Firefox, Edge, and Opera), a custom analytics platform integrating System1, Inuvo, Google Ads, Facebook, and Taboola with AI-powered insights (Claude API) and ClickHouse for time-series analytics, and multiple content platforms (TrendSeeker, WeAnswerThis). Built and maintained the full infrastructure: Drone CI/CD, CapRover servers, Docker, OpenTelemetry observability with SigNoz, Uptime Kuma monitoring, self-hosted secrets management (Infisical, Bitwarden), private npm registry, and a shared NX monorepo powering all services. Tech spans NestJS, Vue, Nuxt, React, Next.js, Go, Python, TypeScript, MongoDB, PostgreSQL, ClickHouse, Redis, RabbitMQ, Firebase, and AWS.

  4. Senior Software Engineer

    Oct 2022 — Nov 2024

    SeaLights (acquired by Tricentis) · Remote. Built and maintained the JavaScript/TypeScript instrumentation agents that became core to the Tricentis test intelligence platform. Developed the initial integrations for Playwright and Cypress, and designed the CI/CD onboarding workflow that scaled agent adoption across enterprise accounts.

  5. Frontend Developer

    Jun 2021 — Oct 2022

    agmatix · Full-time. Developed the customer-facing Vue.js platform used by agricultural labs and field agronomy engineers. Owned the Mapbox geospatial integration end-to-end—custom plot and field drawing tools, geo data persistence, and map-based visualization—collaborating with backend engineering to design the data model and API contract.

  6. Full Stack Developer

    Jul 2020 — May 2021

    Projektt Technologies · Full-time. Built the customer-facing web app, trainer admin dashboard, and cross-platform mobile app (Capacitor) for a fitness marketplace using Vue.js (Quasar) and Firebase. Contributed to the serverless backend—AWS Lambda, DynamoDB (single-table design), S3—and integrated Elasticsearch to power the platform's search experience.

  7. Freelancer

    Sep 2018 — Present

    Upwork · 30+ projects delivered with perfect client ratings. Shipped full-stack applications across SaaS, fitness, e-learning, and geospatial domains—Vue.js, Node.js, TypeScript, AWS, Electron, and Mapbox. Built long-term client relationships (3,500+ hours worked), delivering end-to-end solutions from Electron desktop apps to automated PDF processing systems.

Publications

  1. Performance comparison of C and JavaScript (Node.js - V8 engine)

    ResearchGate

    Publication on performance comparison between C and JavaScript (Node.js, V8 engine).

How I work

I ship reliable software, pick up new tech fast, and care as much about the people I work with as the code I write.

"Really phenomenal developer and super fast learner. There is not much in software development that Kristijan can't turn his hand to. He has been a vital member of our team throughout this project and we were very lucky to find him."

— Former employer, Projektt Technologies

Contact

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