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Founding Full Stack Software Engineer Jobs in Connecticut

Icon Health

Full Stack Engineer

Stamford, CT

As one of the first Full Stack Engineers at Icon, you'll be a driving force behind crafting our product platform. The ideal candidate is someone who's passionate about understanding the context for ...

Cheez

Minimum 2-3 years of software engineering experience * Have built mobile apps (and/or web apps) full-stack before * Enthusiastic about photo sharing and/or AI and/or social media

Cheez

Minimum 2-3 years of software engineering experience * Have built mobile apps (and/or web apps) full-stack before * Enthusiastic about photo sharing and/or AI and/or social media

Cheez

Minimum 2-3 years of software engineering experience * Have built mobile apps (and/or web apps) full-stack before * Enthusiastic about photo sharing and/or AI and/or social media

Cheez

Minimum 2-3 years of software engineering experience * Have built mobile apps (and/or web apps) full-stack before * Enthusiastic about photo sharing and/or AI and/or social media

Cheez

Minimum 2-3 years of software engineering experience * Have built mobile apps (and/or web apps) full-stack before * Enthusiastic about photo sharing and/or AI and/or social media

Cheez

Minimum 2-3 years of software engineering experience * Have built mobile apps (and/or web apps) full-stack before * Enthusiastic about photo sharing and/or AI and/or social media

Ritchie Bros.

Staff Software Engineer

Norwalk, CT · On-site

$112K - $168K/yr

Role Summary: The Staff Software Engineer will be a high-velocity full-stack builder for the new Product Engineering team, predominantly focused on delivering elite frontend interfaces while ...

Ritchie Bros.

Staff Software Engineer

Norwalk, CT · On-site

Role Summary: The Staff Software Engineer will be a high-velocity full-stack builder for the new Product Engineering team, predominantly focused on delivering elite frontend interfaces while ...

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All JobsFounding Full Stack Software Engineer JobsFounding Full Stack Software Engineer Jobs in Connecticut

Founding Full Stack Software Engineer information

What are the key skills and qualifications needed to thrive as a founding full stack software engineer?

To thrive as a Founding Full Stack Software Engineer, you need deep expertise in both front-end and back-end development, strong problem-solving skills, and experience building scalable web applications, usually demonstrated by a degree in computer science or equivalent experience. Mastery of tools and frameworks such as JavaScript, React, Node.js, cloud platforms (AWS, GCP), and version control systems like Git is typically required. Exceptional communication, adaptability, and entrepreneurial mindset are crucial for collaborating in a dynamic startup environment and driving product vision. These skills are vital for rapidly iterating, shipping robust products, and establishing a strong technical foundation for a growing company.

What is a founding full stack software engineer?

Founding Full Stack Software Engineers are technical professionals who join a startup at its earliest stages to help build and shape the company's core products and technology infrastructure. They work across both the front-end and back-end of applications and play a key role in making architectural decisions, setting up development processes, and establishing the technical foundation. As 'founding' team members, they often have greater responsibilities, including working closely with company founders, contributing to product strategy, and sometimes receiving equity or a stake in the company.

What unique challenges might I face as a founding full stack software engineer in an early-stage startup?

As a Founding Full Stack Software Engineer, you’ll often juggle multiple responsibilities, from designing core architecture to deploying code and setting up development workflows. Since resources are limited and the product vision can evolve quickly, adaptability and strong communication with founders and other early team members are key. You may also be deeply involved in decisions beyond pure engineering, such as hiring, product strategy, and even customer support. This environment can be both demanding and highly rewarding, offering accelerated learning and significant influence over the company’s technical direction.
What are popular job titles related to Founding Full Stack Software Engineer jobs in Connecticut? For Founding Full Stack Software Engineer jobs in Connecticut, the most frequently searched job titles are:
What job categories do people searching Founding Full Stack Software Engineer jobs in Connecticut look for? The top searched job categories for Founding Full Stack Software Engineer jobs in Connecticut are:
What cities in Connecticut are hiring for Founding Full Stack Software Engineer jobs? Cities in Connecticut with the most Founding Full Stack Software Engineer job openings:
Founding Full Stack Software Engineer jobs near you
Infographic showing various Founding Full Stack Software Engineer job openings in Connecticut as of August 2026, with employment types broken down into 1% Internship, 87% Full Time, 9% Part Time, and 3% Contract. Highlights an 84% Physical, 4% Hybrid, and 12% Remote job distribution.

Software Engineer (Fulltime - Onsite)

Cleo Consulting

Stamford, CT • On-site

Contractor

Posted 5 days ago

Job description

Job Title: Software Engineer
Location: Stamford, Connecticut
Full-time On-site no remote OR Hybrid

Hiring Manager notes

  • Fast process with responsive HM: Interview process is just a 15-min phone screen, one technical round (live coding), and a behavioral/onsite.
  • High fillability with clear specs: The hiring manager gave extremely specific requirements (T3 stack, Python, LLM APIs) and a concrete example candidate profile.

About

  • Client is an investment firm managing roughly $700 million, primarily a hedge fund with some private equity.
  • Team of 10, split between Fort Worth, Texas, and Stamford, Connecticut.

Role Requirements

  • Looking for a full-stack generalist with experience in the T3 stack (TypeScript, Python, AWS).
  • Proficiency in Python is necessary; familiarity with AI engineering, automation, and finance is a plus.
  • Required: 2 - 7 years of experience in full-stack software development experience, with proficiency in the T3 stack and python
  • Must have: Ability to read and write Python for scripting and automation
  • Experience with relational databases and writing production-quality SQL

Nice to have

  • Experience with AI/LLM APIs to build automations or agentic workflows
  • Finance, fintech, or quant-adjacent company background (including additional major/minor in undergrad)

Compensation and Logistics

  • Role is in-person in Stamford, Connecticut, five days a week.
  • Base salary range from $160,000 to $230,000, with potential discretionary bonus.
  • Interview Process
  • Initial screen, followed by 15-minute phone call, technical round, behavioral round, and on-site interview.
  • Technical assessments may involve building a project in real-time to evaluate problem-solving and coding skills.
  • Traits to avoid Job hopper — multiple short stints (e.g., 5 companies in 7 years)

Questions to ask

  • What's something cool you've built outside of a professional context — whether it's a personal tool, a side project, a sports betting model, or anything else you made just because you were curious?
  • What's your familiarity or interest in financial markets, investing, or other data-driven/quantitative domains like sports analytics?

About Client

  • Client is an investment firm founded 8.5 years ago that manages approximately $700 million in assets. The firm operates as a combination of hedge fund and private equity, with a flexible mandate spanning fundamental equities, credit investing, and private equity investing.
  • Client has delivered top 1 percentile net returns since inception, with high-20s net annualized performance. The firm has grown from $5 million on day one to ~$700 million under management, and counts some of the top universities in the world among its investors.
  • Client Labs is the quantitative research and technology arm supporting the Client Opportunities Fund. Their work spans three core areas:
  • Portfolio Support & Analytics: Serving as a research partner to the portfolio manager and fundamental analyst team, identifying areas of strength and weakness through rigorous quantitative analysis and building tools to improve core fund performance.
  • Risk Management: Designing and deploying custom factor hedges, constructing bespoke hedge baskets tailored to the fund's specific risk profile.
  • Alpha Factor Research: Developing proprietary alpha factors using fundamental and alternative data sources to identify high- and low-quality businesses, with potential to operate as standalone systematic investment strategies.
  • The firm is investing heavily in building proprietary software tools and AI integrations across every aspect of the research process — from idea generation to position sizing to LLM integrations — creating real technological edge in investment research.

“Cleo Consulting is an equal opportunity employer (Minorities/Women/Veterans/Disabled)”