Umithan ViceSenior AI & Full StackEmail me

Open to Senior AI & Full Stack Engineer roles

Umithan Vice — Senior AI & Full Stack EngineerI build AI products and the full stack around them.

Senior software engineer and technical lead with 8+ years of experience, 6 of them in TypeScript. I have shipped production OpenAI and Anthropic features with persistent context, RAG and streaming, and I build and run my own AI products end to end, from the models to the interface.

NowBuilding Vaniras, an AI/ML stock intelligence platform

See selected work Email me GitHub (opens in a new tab)LinkedIn (opens in a new tab)

Istanbul, Türkiye · Remote with U.S. & U.K. teams

Umithan Vice, Senior AI & Full Stack Engineer

AI-native LLMs, RAG & my own ML models

End to end From model to interface

Previously
  • Bolt Insight
  • Marti (NYSE: MRT)
  • Vodafone
  • Talent500
  • Optimus Software
8+Years shipping software6 of them in TypeScript
LLMsIn productionOpenAI & Anthropic, RAG, streaming
1,000+U.S. stocks forecastBy models I train myself
LeadTech & team leadMarti (NYSE: MRT) & Optimus

Independent products

Products I built end to end.

Two AI products and a marketplace, each owned from architecture to deployment. Swipe, use the arrows or jump straight to a product.

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01 / 03Live product

Vaniras

AI/ML stock intelligence platform

Creator · sole engineer

  • 3-, 6-, 9- and 12-month forecasts, each with Lower (P10), Median (P50) and Upper (P90) estimates.
  • 0–100 scorecard for Overall, Value, Quality, Growth, Safety and Momentum, benchmarked against sector peers.
  • AI research assistant that explains model outputs but can never create or change a number.
  • Own ML models
  • Quantile forecasting
  • Factor scoring
  • LLM narratives
  • Full stack product
Read case study: VanirasLive product: Vaniras (opens in a new tab)Methodology: Vaniras (opens in a new tab)

02 / 03Open source · live demo

EvidenceDesk

RAG support copilot with human review

Independent · sole engineer

  • Hybrid retrieval: PostgreSQL full-text search and pgvector similarity, fused with reciprocal rank fusion.
  • Bounded LangGraph workflow with citation checks. Model output never writes directly; approval saves the exact reviewed proposal in one transaction.
  • API, database, browser and failure tests in CI, plus a retrieval evaluation published separately from answer quality.
  • Python
  • FastAPI
  • LangGraph
  • pgvector
  • Next.js
Read case study: EvidenceDeskLive demo: EvidenceDesk (opens in a new tab)Source code: EvidenceDesk (opens in a new tab)Evaluation: EvidenceDesk (opens in a new tab)

Company projects

Shipped inside product teams.

AI features, real-time systems, enterprise platforms and trading products, built with teams at Bolt Insight, Marti, Vodafone, Talent500 and Optimus Software.

Use the left and right arrow keys or the previous and next buttons to browse.

Bolt Insight2026

AI market research products

Full Stack Engineer

  • Production OpenAI and Anthropic integrations with persistent context, RAG and real-time streaming under latency constraints.
  • Validation, retries, fallbacks and failure recovery for customer-facing AI features, verified through tests and observability.
  • OpenAI & Anthropic
  • RAG
  • Node.js & Python
  • AWS

Marti Technologies2025

Mobility web, mobile and real-time ops

Senior Software Engineer & Tech Lead

  • Led frontend-focused engineering across high-traffic mobility products, from marti.tech to in-app WebViews.
  • Real-time CRM maps and courier tracking over WebSockets, backed by Node.js and Python services on AWS and Kubernetes.
  • React
  • WebSockets
  • Kubernetes
  • AWS

Vodafone2024 – 2025

HB Campaign Panel

Senior Software Engineer

  • Internal campaign-management platform connecting campaign interfaces to database-backed functionality and external services.
  • Built with Next.js, React and PostgreSQL and shipped through Vodafone's structured enterprise releases.
  • Next.js
  • React
  • PostgreSQL
  • Internal tools

Talent5002022 – 2024

AI Planet

Software Engineer · end-to-end owner

  • Independently delivered an AI SaaS product from requirements and architecture through frontend, backend, integrations, testing and deployment.
  • Collaborated on voice-agent and AI workflow integrations with external services and supported the product in production.
  • AI SaaS
  • Full stack
  • Integrations
  • Production support

Talent5002022 – 2024

Canvas: React to Next.js migration

Software Engineer

  • Contributed to migrating the Canvas HR platform from React to Next.js, including performance optimization.
  • Worked with distributed U.S. and India product and engineering teams on third-party integrations.
  • React
  • Next.js
  • Migration
  • HR tech

Optimus Software2021 – 2022

Trading, investment and fundraising platforms

Senior Software Engineer & Team Lead

  • Web trading experiences for clients including ING Yatırım and PhillipCapital, built with React, Node.js, Python and MongoDB.
  • Led frontend-focused engineering and mentored engineers while staying hands-on in debugging and performance work.
  • React
  • Node.js
  • Python
  • MongoDB

Experience

Built across teams, sectors and borders.

Remote work with teams in the U.S. and the U.K., and hands-on technical leadership in Istanbul across AI, mobility, telecom, HR tech and trading.

Education
A.S. in Computer Programming, Giresun University (2014 – 2016)
English
C1, professional

  1. –

    Remote · London, UK

    Projects : Bolt Insight

    Bolt Insight

    Full Stack Engineer

    Production LLM features for AI market research products: OpenAI and Anthropic integrations, persistent context, RAG and real-time streaming.

  2. –

    Istanbul, Türkiye

    Projects : Marti Technologies (NYSE: MRT)

    Marti Technologies (NYSE: MRT)

    Senior Software Engineer & Tech Lead

    Led frontend-focused engineering for high-traffic mobility products while contributing to Node.js and Python services, real-time maps and courier tracking.

  3. –

    Istanbul, Türkiye

    Projects : Vodafone

    Vodafone

    Senior Software Engineer

    Enterprise and ecommerce applications, including CRM, Red Konsol and the HB Campaign Panel, built with React, Next.js, Node.js and PostgreSQL.

  4. –

    Remote · USA & India

    Projects : Talent500

    Talent500

    Software Engineer

    International SaaS and HR products. Independently delivered AI Planet end to end and contributed to the Canvas React-to-Next.js migration.

  5. –

    Istanbul, Türkiye

    Projects : Optimus Software

    Optimus Software

    Senior Software Engineer & Team Lead

    Led frontend-focused engineering across trading, ecommerce and fundraising platforms while contributing backend functionality and mentoring engineers.

  6. 2017 – 2021

    Earlier

    • Full Stack Developer, Freelance · 2021
    • Software Engineer, M&L Software · 2020
    • Frontend Developer & Designer, Morplex Industry · 2017

Capabilities

Hands-on enough to go deep. Experienced enough to see the whole system.

Guardrails before features

AI output is validated before it can change anything that matters. EvidenceDesk saves nothing without human approval, and the Vaniras assistant can explain a forecast but never create or alter a number.

Measure, then ship

Retrieval evaluation published separately from answer quality, walk-forward model validation with interval-coverage checks, and API, database and browser tests running in CI.

Lead while building

As tech lead at Marti and team lead at Optimus, I guided architecture, reviewed code and mentored engineers while staying hands-on in the implementation.

LLMs & agents

  • OpenAI
  • Anthropic
  • LangGraph
  • Multi-step workflows
  • Structured JSON outputs
  • Versioned prompts

RAG & retrieval

  • Embeddings
  • pgvector
  • PostgreSQL full-text search
  • Hybrid retrieval
  • Reciprocal rank fusion
  • Citation checks

Applied ML

  • Python
  • Quantile forecasting
  • Feature pipelines
  • Walk-forward validation
  • Model evaluation
  • Scheduled inference

Full stack product

  • TypeScript
  • React
  • Next.js
  • Node.js
  • FastAPI
  • WebSockets

Data & cloud

  • PostgreSQL
  • Redis
  • MongoDB
  • Docker
  • Kubernetes
  • AWS & GCP

Quality & reliability

  • API & browser tests
  • CI/CD
  • Observability
  • Retries & fallbacks
  • Human-in-the-loop approval
  • Tenant authorization

Contact

Hiring a Senior AI or Full Stack Engineer?

I am looking for senior roles where applied AI meets end-to-end product delivery. Email is the fastest way to reach me.

umitvice@gmail.com LinkedIn (opens in a new tab)GitHub (opens in a new tab)