Senior Backend Engineer
Company Overview:
Join Seedify, a leading Blockchain Gaming Launchpad and Incubation Ecosystem driving innovation in gaming, blockchain, and Web3 industries. Our mission is to support project developers and innovators through funding, community building, and holistic support. We are dedicated to shaping the future of gaming and blockchain technology.
Key Responsibilities:
Lead backend services development and maintenance utilizing Node.js, TypeScript, and JavaScript, ensuring clean, efficient, and scalable code.
Design and manage RESTful APIs, integrate third-party APIs, and facilitate data exchange to support business processes.
Manage databases (SQL and NoSQL), covering design, development, optimization, data integrity, and security.
Monitor and enhance application performance including server-side logic, database interactions, blockchain interactions, and front-end integration.
Conduct code reviews ensuring adherence to coding standards, implement unit and integration tests, and uphold high-quality code practices.
Collaborate with frontend developers to integrate user-facing elements with server-side logic effectively.
Troubleshoot and debug applications, offering timely solutions to minimize downtime leveraging DevOps practices.
Implement security measures for data protection and authentication mechanisms.
Provide technical leadership and mentorship, fostering a collaborative team environment.
Stay updated on emerging technologies and industry trends to enhance existing systems with a focus on scalability and maintenance.
Maintain comprehensive documentation of developed systems to ensure accuracy and relevance.
Team Structure:
You will work within a versatile product development team comprising front end/back end/test engineers, UI/UX designers, product owners, and Web3 subject matter experts.
Company Culture:
Seedify operates globally with a fully remote setup and an agile work environment. We prioritize user-centric development and are committed to product enhancement.
Career Development Opportunities:
Exciting avenues for career growth and progression into roles with increased technical responsibility or management positions.
Location:
Role is 100% remote with flexible time zones, maintaining work hours between 9AM - 10PM UTC time.
Requirements:
4+ years of experience as a Software Engineer or Senior Software Engineer.
Proficiency in back-end development, including TypeScript/JavaScript for back-end REST APIs, working with Express or NestJS, NoSQL and SQL databases, and REST API best practices.
Interest in the Web3 ecosystem, knowledge of wallets, transactions, IDOs, ICOs, DeFi, and omnichain.
Experience in a user-centric product development environment.
Ability to guide and mentor other developers fostering a culture of quality and continuous learning.
Desirable:
Thorough knowledge of the Web3 ecosystem and blockchain.
Experience in payment platforms/providers or similar high-risk environments.
Understanding of AWS infrastructure and infrastructure as code.
A degree in computer science or related field is advantageous.
Benefits:
21 days of holidays/year + local bank holidays.
Sick leave entitlement.
Budget allocation for training/courses.
Budget for work equipment procurement such as laptops.
Salary:
Competitive remuneration of up to $7000 USDC per month with additional bonuses paid in SFUND token every 6 months.
Junior/Mid Decentralized Infrastructure Engineer
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements:
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects)
Solid Python / Rust / Go skills
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Senior Decentralized Infrastructure Engineer
Build and scale production-grade decentralized infrastructure: compute networks, protocols, storage layers, orchestration for AI workloads, and open-source primitives that power the next generation of agent systems.Skills &
Requirements:
4+ years in blockchain infra, distributed systems or high-scale compute
Deep experience with Rust / Go / C++ and protocols (libp2p, IPFS, custom consensus, GPU orchestration)
Bonus: self-hosted AI compute, decentralized training or edge inference
Ship fast, own uptime, love extreme performance and cost efficiency
Salary:
$175,000 – $255,000 USD base + big equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug elite builders straight into our fastest portfolio companies.
This is your chance to build the actual rails for autonomous agents and open digital economy at scale. Zero bureaucracy, maximum leverage.
High risk. Zero apologies.
Junior AI Engineer
Join one of our fast-growing portfolio startups and help build simple AI features. You’ll work with large language models, create basic automations and chat tools, test ideas, fix small bugs, and integrate AI into everyday products.
Skills & Requirements:
0–2 years of experience (fresh graduates or self-taught welcome)
Basic Python knowledge
Interest in AI, LLMs or chatbots (personal projects are a big plus)
Quick learner who enjoys trying new things
Good English for team communication
Salary: $95,000 – $135,000 USD base + equity in the startup + full benefits
Description:
Sirex.vc not only invests — we actively help our portfolio companies hire great people. This Junior AI Engineer role is inside one of our AI-native startups. You’ll get real hands-on experience, learn from the best, and build things users actually use — all with full support from the Sirex team.
High risk. Zero apologies.
AI Agent Engineer
Join one of our high-conviction AI-native portfolio companies and build autonomous AI agents from the ground up. You’ll design agent architectures, implement tool-calling & memory systems, connect them to browsers/shell/APIs, run long-horizon tasks, and ship features that make the product feel alive and truly useful.
Skills & Requirements:
2–5 years building LLM-powered agents (LangGraph, CrewAI, ReAct, custom frameworks)
Strong Python skills + experience with tool calling, RAG, vector stores and evaluation
Bonus: familiarity with browser automation, self-hosted models or decentralized compute
Fast executor who loves shipping in ambiguity
Passion for agents that actually do real work (not just chat)
Salary: $160,000 – $230,000 USD base + meaningful equity (in the portfolio company) + full benefits + carry from Sirex network
Description:
Sirex.vc doesn’t only write checks — we actively help our portfolio companies recruit the best people on the planet. This AI Agent Engineer role is inside one of our fastest-moving startups building the next generation of autonomous agents. You’ll get direct support, intros, and operational help from the Sirex team while working on frontier technology that can change how the world uses AI.
High risk. Zero apologies.
Investment Analyst
Help the team find and evaluate early-stage startups. Search for promising projects, do quick market checks, prepare short summaries, track portfolio companies, and assist with basic due diligence.
Skills & Requirements:
0–2 years of experience (recent graduates or startup background welcome)
Strong interest in AI, crypto, and new technologies
Good at research, writing clear notes, and using spreadsheets
Organized, fast learner, and comfortable with uncertainty
English at upper-intermediate level
Salary:
$85,000 – $115,000 USD base + small carry + full benefits
Description:
At Sirex.vc we back crazy ideas in AI and decentralized tech. As Investment Analyst you’ll be right in the middle of the action — scanning hundreds of startups every week, learning how real venture works, and helping decide where we put money. Perfect first step into VC for someone hungry and smart. High risk. Zero apologies.