I am a software engineer with 12 years building production-grade web applications. I specialize in TypeScript and work across Node.js, Python, Laravel, and .NET depending on project needs. Currently I’m at Levity, shaping the workflow and integration layer of an AI automation platform, building RAG pipelines over customer document stores, evaluation harnesses, streaming UX, and monitoring cost and latency. Python handles embeddings and eval, while TypeScript powers the application surfaces. I treat AI and LLM systems as engineering challenges focused on scalability, reliability, and maintainability. I thrive in small, high-trust teams, favor async-first collaboration, and practice clear technical decision-making with well-documented processes.

Kert Treikelder

I am a software engineer with 12 years building production-grade web applications. I specialize in TypeScript and work across Node.js, Python, Laravel, and .NET depending on project needs. Currently I’m at Levity, shaping the workflow and integration layer of an AI automation platform, building RAG pipelines over customer document stores, evaluation harnesses, streaming UX, and monitoring cost and latency. Python handles embeddings and eval, while TypeScript powers the application surfaces. I treat AI and LLM systems as engineering challenges focused on scalability, reliability, and maintainability. I thrive in small, high-trust teams, favor async-first collaboration, and practice clear technical decision-making with well-documented processes.

Available to hire

I am a software engineer with 12 years building production-grade web applications. I specialize in TypeScript and work across Node.js, Python, Laravel, and .NET depending on project needs. Currently I’m at Levity, shaping the workflow and integration layer of an AI automation platform, building RAG pipelines over customer document stores, evaluation harnesses, streaming UX, and monitoring cost and latency. Python handles embeddings and eval, while TypeScript powers the application surfaces.

I treat AI and LLM systems as engineering challenges focused on scalability, reliability, and maintainability. I thrive in small, high-trust teams, favor async-first collaboration, and practice clear technical decision-making with well-documented processes.

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Experience Level

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Work Experience

Senior Full Stack Engineer at Levity
November 1, 2024 - Present
Responsible for the workflow and integration layer of Levity's AI automation product. Implemented RAG pipelines over customer document stores (chunking, embeddings, retrieval, reranking) and the eval harness to catch regressions before shipping. Built streaming UX on top of OpenAI and Claude via the Vercel AI SDK; reduced median LLM cost per workflow run by ~30% through model routing, prompt compaction, and caching. Apps built with Next.js + TypeScript; back-end services split between Node.js / NestJS and Python (FastAPI) for embeddings and eval tasks; ensured tenant isolation, RBAC, OAuth2 / OIDC, and audit logging; improved performance with route-level code splitting and edge caching.
Senior Full Stack Engineer at The Codest
March 1, 2023 - September 1, 2024
SaaS and marketplace builds for European startups. Two B2B platforms with GraphQL APIs and read-heavy PostgreSQL schemas; Redis-backed hot paths; AWS stack (ECS, RDS, S3, CloudFront); Terraform IaC; GitHub Actions; Stripe, Algolia, Segment, Sentry integrations. Early LLM features in 2023 (in-app search and AI summarisation) and an evaluation scaffold.
Senior Web Developer at Frontkom
October 1, 2021 - December 1, 2022
Nordic agency work focused on editorial and public-sector projects. Backend in Symfony/Laravel; frontend in React + TypeScript; headless backends (Drupal, Storyblok, Contentful); multi-tenant with OAuth2/JWT; improved test coverage (Jest, PHPUnit) and reduced production regressions; async-first collaboration with clients and leads.
Software Developer at Aktors
April 1, 2018 - September 1, 2021
Enterprise web for public sector and finance. ASP.NET MVC / C# / MS SQL; Laravel (PHP) for customer portals; Angular 2+ migration from AngularJS; REST APIs and X-Road integrations (Estonian e-government data exchange); Docker for local dev; GitLab CI; introduced React on greenfield projects; pairing and code reviews.
Junior Web Developer at Mobi Lab
June 1, 2014 - March 1, 2018
Laravel 4/5 + MySQL backends and AngularJS 1.x / jQuery frontends for client web projects. Responsive HTML5 / CSS3 / SASS; admin panels for native iOS/Android client work; improved MySQL query performance under load; introduced Git-based code review, CI, and agency delivery practices.

Education

Bachelor’s Degree in Software Engineering at University of Tartu
January 1, 2010 - January 1, 2014

Qualifications

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Industry Experience

Software & Internet, Professional Services