Full-Time

Senior Full Stack Engineer

Reactjs + Dot Net

Updated on 9/4/2026

Fractal

Fractal

1-10 employees

NFT marketplace for blockchain gaming assets

No salary listed

Bengaluru, Karnataka, India

In Person

Category
Software Engineering (1)
Required Skills
Kubernetes
MLOps
Microsoft Azure
JavaScript
React.js
MySQL
Jest
Postgres
Docker
RAG
TypeScript
Version Control
.NET
AWS
LangGraph
Playwright
MongoDB
REST APIs
LangChain
DevOps
HTML/CSS
Google Cloud Platform

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Requirements
  • At least 6 years of hands-on experience building enterprise-grade full-stack applications and owning complex engineering workstreams from design through delivery.
  • Strong expertise in a modern front-end framework such as React, with solid command of JavaScript or TypeScript, HTML5, and CSS3.
  • Strong back-end engineering experience in a major stack such as .NET or .NET Core.
  • Strong understanding of system design fundamentals, design patterns, API design, scalability, reliability, performance optimization, and distributed application architecture.
  • Experience with relational or NoSQL databases such as MySQL, PostgreSQL, SQL Server, or MongoDB, including schema design and query performance tuning.
  • Hands-on experience building and consuming REST APIs and working with modern integration patterns across services and external systems.
  • Strong understanding of responsive web design, reusable component-based architecture, accessibility basics, and front-end performance optimization.
  • Hands-on experience with automated unit, integration, and end-to-end testing using tools such as Jest, PyTest, Playwright, or Cypress.
  • Working experience with Azure, AWS, or GCP, including deployment, configuration, observability, and support for cloud-native environments.
  • Hands-on experience with containerization and modern engineering environments using Docker, Kubernetes, or equivalent platforms.
  • Strong understanding of DevOps and secure software development life cycle practices, including continuous integration and continuous delivery pipelines, source control workflows, code reviews, build automation, and release quality controls.
  • Hands-on experience integrating artificial intelligence capabilities into applications, including large language model application programming interfaces, prompt design, structured outputs, tool or function calling, and reliable user-facing artificial intelligence features.
  • Good understanding of retrieval-augmented generation, vector search, grounding strategies, prompt orchestration, and common generative artificial intelligence failure modes such as hallucination and response inconsistency.
  • Experience implementing evaluation, monitoring, and guardrails for artificial-intelligence-enabled features, including response quality checks, fallback handling, latency and cost awareness, and privacy or security considerations for enterprise use cases.
  • Ability to translate solution architecture into detailed implementation plans and contribute effectively to technical design discussions with architects and engineering leads.
  • Strong troubleshooting and debugging skills, with the ability to rapidly resolve production and implementation issues while maintaining engineering quality.
  • Experience mentoring junior engineers and contributing to engineering best practices, reusable assets, and continuous improvement initiatives.
  • Ability to work effectively in cross-functional and client-facing delivery environments.
Responsibilities
  • Develop robust, efficient, and maintainable code for critical features while meeting functional and non-functional requirements.
  • Participate in system and solution design discussions by contributing implementation insights, technical trade-offs, and pseudocode where needed.
  • Act as a technical point of contact for day-to-day implementation issues, troubleshoot challenges, and drive timely resolution.
  • Enforce and improve code quality through code reviews, engineering standards, automated testing, and secure development practices.
  • Collaborate with architects, technical program managers, product teams, and platform teams to translate high-level designs and artificial intelligence use cases into scalable, secure, production-ready solutions.
  • Build and integrate artificial-intelligence-powered application capabilities such as copilots, intelligent assistants, summarization, search, recommendations, and workflow augmentation using large language model application programming interfaces and related services.
  • Implement artificial-intelligence-enabled solution patterns including prompt orchestration, retrieval-augmented generation, grounding strategies, structured outputs, tool or function calling, and quality or safety guardrails for enterprise use cases.
  • Support and improve DevOps practices, including build pipelines, continuous integration and continuous delivery workflows, automated testing, release readiness, and engineering observability.
  • Monitor, troubleshoot, and optimize application, system, and artificial-intelligence feature performance against reliability expectations, latency targets, and cost considerations.
  • Document technical designs, implementation decisions, and operational considerations to support maintainability, auditability, and knowledge transfer.
  • Mentor junior engineers by sharing best practices, reviewing work products, and guiding sound engineering approaches.
  • Contribute to technical proposals, estimations, reusable assets, and implementation improvements, including automation, refactoring, and component reuse.
  • Maintain compliance with security, quality, governance, and audit expectations, and contribute to broader process and capability improvement initiatives.
  • Own critical full-stack feature implementation and deliver high-quality solutions with minimal oversight.
  • Convert architecture intent into scalable, secure, and production-ready implementations across core and artificial-intelligence-enabled application capabilities.
  • Uphold engineering standards across code quality, testing, security, documentation, performance, and DevOps practices.
  • Deliver reliable artificial-intelligence-enabled experiences with appropriate quality, safety, observability, and cost awareness.
Desired Qualifications
  • Experience working in Agile delivery environments with close collaboration across product, quality assurance, DevOps, technical program management, and architecture teams.
  • Exposure to performance tuning, observability, logging, monitoring, caching, and reliability engineering practices in production systems.
  • Experience contributing to reusable frameworks, shared components, internal accelerators, or broader engineering capability-building initiatives.
  • Prior experience supporting estimations, technical proposals, solutioning discussions, or client-facing technical workshops.
  • Exposure to artificial intelligence engineering frameworks and tooling such as LangChain, LangGraph, Semantic Kernel, vector databases, or model gateways for production-grade generative artificial intelligence applications.
  • Experience with large language model operations or machine learning operations practices such as prompt versioning, evaluation pipelines, experiment tracking, workflow observability, and responsible artificial intelligence controls.
  • Exposure to building artificial intelligence copilots, agentic workflows, recommendation systems, or domain-specific generative artificial intelligence solutions for enterprise products.

Fractal.is operates a blockchain-based marketplace for gaming NFTs where developers can list games and in-game assets and players can buy, sell, and trade unique digital items. The platform supports minting and secondary sales of NFTs, with transactions generating revenue through commissions. It emphasizes community engagement through channels like Discord and Twitter to drive listing activity and user retention. Compared to others, Fractal.is specializes in the gaming sector, aggregating multiple games and assets under one marketplace, and focuses on building a connected metaverse ecosystem for developers and gamers. Its goal is to grow a active, trusted marketplace that enables true ownership of digital assets and vibrant participation in the gaming/NFT space.

Company Size

1-10

Company Stage

Seed

Total Funding

$35.2M

Headquarters

San Francisco, California

Founded

2021

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Simplify Jobs

Simplify's Take

What believers are saying

  • Stash still shows live product activity, with Fractal docs updated January 2026.
  • GamesBeat reported over 121 NFT collections across 85 games launched by June 2025.
  • Polygon integration in September 2024 widened distribution beyond Solana and attracted strategic investment.

What critics are saying

  • Web3 products sat in a holding pattern during 2024, undermining the original NFT thesis.
  • Stash must beat Shopify, Xsolla, and Unity-backed commerce tools by 2027.
  • If game studios skip direct web shops, Stash's transaction take-rate model dies.

What makes Fractal unique

  • Justin Kan pivoted Fractal into Stash in January 2024, targeting game commerce directly.
  • Stash offers white-label web shops, dynamic pricing, loyalty, and player-owned storefronts.
  • Its Fractal heritage still gives developer distribution, wallet, launcher, and onramp tooling.

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Benefits

Generous PTO

Competitive Salary

401k Contributions

Company News

Dealflow
Oct 20th, 2024
Fractal raises $10m in funding

Renfe secured a €78 million contract, while Madrid-based Fractal raised $10 million led by Kayyak Ventures. Oakley Capital acquired a 70% stake in logistics software company Alerce, which has sales of around €12 million and EBITDA between €4 million and €5 million. Other funding news includes Shakers raising €6 million, Cocoon €2 million, and Kalma €1 million. Accenture acquired cybersecurity firm Innotec Security. Nauta led an €8.8 million Series A round in UK-based Spotted Zebra.

VentureBeat
Jun 6th, 2023
Fractal Unveils Fstudio Tools To Make Building Blockchain Games Easier

Missed the GamesBeat Summit excitement? Don't worry! Tune in now to catch all of the live and virtual sessions here. Justin Kan’s Fractal is unveiling FStudio, a set of tools that make it easier for game studios to build, market and monetize Web3 games without blockchain expertise.Kan, the cofounder of Twitch who started Fractal in 2021 to build tools for blockchain games, believes that blockchain tech is the best way to get to a player-driven economy. But he said the problem is the gaming industry has become obsessed with talking about that backend technology – turning off players and distracting Web3 startups from the main mission: creating excellent gameplay experiences. To move forward, we need to refocus the conversation on the players, not the tech, Kan said in an interview with GamesBeat.“In the last eight months or so, we’ve been working on a bunch of features that help empower the next wave of developers for Web3 gaming,” Kan said. “We call it FStudio. We’re solving the problems that we learned from talking to developers

Decrypt
Jun 6th, 2023
Twitch Co-Founder's Fractal Launches Tools to Help Devs Build NFT Games

Gaming-centric Web3 startup and NFT marketplace Fractal has announced Fractal Studio, or FStudio, a three-part product the firm says will enable video game developers to more easily add crypto integrations into their titles without having to code.

Tingbits
May 11th, 2023
Mojo Melee: Planet Mojo's Epic Autobattler Now Live on Fractal

Mojo Melee introduces a unique collaboration with Fractal in addition to the open beta qualifier.

Decrypt
Jan 24th, 2023
Twitch Co-Founder’s Solana Gaming Platform Fractal Expands to Polygon - Decrypt

Fractal co-founder Justin Kan tells Decrypt that many game developers "want to be on Polygon" as the platform expands.