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Flagship Pioneering
Flagship Pioneering

60 Flagship Pioneering Software Engineer Jobs Hiring Near You

Flagship Pioneering, Inc.

Open Call

Cambridge, MA

$16.50 - $21.50/hr

COMPANY DESCRIPTION Flagship Labs 109, Inc. (FL109) is pioneering the use of artificial ... Software engineering * Automation * Physics * Hardware engineering #LI-MB1

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Flagship Pioneering Jobs Information

What is it like to work at Flagship Pioneering?

Flagship Pioneering is a venture creation firm that fosters a culture of innovation, collaboration, and entrepreneurial spirit, encouraging employees to think creatively and take calculated risks. The company's team structure is designed to facilitate interdisciplinary collaboration, with employees from diverse backgrounds working together to develop and launch new ventures, often in state-of-the-art facilities. Working at Flagship Pioneering may appeal to individuals who are passionate about driving scientific and technological advancements, as the company offers opportunities to work on cutting-edge projects and contribute to the development of novel solutions that can positively impact society.

What makes Flagship Pioneering an attractive place to work?

Flagship Pioneering is a leading biotechnology innovation platform that has established itself as a pioneer in the field of life sciences, with a strong track record of identifying and developing groundbreaking technologies. The company's workplace is characterized by a culture of innovation, collaboration, and agility, with opportunities for employees to work on cutting-edge projects and contribute to the development of novel therapeutics and healthcare solutions. Joining Flagship Pioneering offers professionals the chance to be part of a dynamic and forward-thinking organization, with opportunities for growth, professional development, and making a meaningful impact in the field of biotechnology.

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Infographic showing various Software Engineer job openings at Flagship Pioneering in the United States as of August 2026, with employment types broken down into 1% Internship, 96% Full Time, and 3% Part Time. Highlights an 95% Physical, 3% Hybrid, and 2% Remote job distribution.

Principal Software Engineer - Agentic Platform

Flagship Pioneering, Inc.

Cambridge, MA

$147K - $197K/yr

Full-time

Medical, Retirement

Re-posted 7 days ago

Job description

ABOUT PIONEERING INTELLIGENCE

Pioneering Intelligence builds on Flagship Pioneering's legacy of founding cutting-edge science and computational ventures, harnessing recent advances in AI, machine learning, and data to accelerate fundamental research and create a portfolio of AI-first companies. As part of Flagship's integrated model of science, entrepreneurship, and capital, it transforms breakthrough ideas into world-changing companies, elevating the AI advances happening across the ecosystem in human health, sustainability, and beyond.

The Role 

The Pioneering Intelligence group at Flagship Pioneering is building intelligent software systems that integrate agentic AI with scientific reasoning to accelerate discovery and decision-making. At the center of this effort is a new autonomous research platform. It supports autonomous AI systems that reason over complex biological problems. 

We are seeking a Principal Software Engineer to own the underlying agentic platform: the durable orchestration layer on which long-running, multi-agent, multi-model scientific workflows run reliably. 

This is a hands-on architect role for a senior engineer who has built and operated distributed systems at scale and wants to take agentic AI from research to production. You will set the technical foundation and standards for the platform, work shoulder-to-shoulder with AI scientists, engineers, and domain experts, and turn frontier agent patterns into reusable, dependable infrastructure. 

Key Responsibilities 

Own the agentic platform end to end, from research prototype to production, building the durable orchestration layer for long-running, multi-stage scientific workflows. Architect workflow orchestration, evaluation frameworks, and event-driven distributed systems that deliver scale, resilience, and reliability. 

  • Define SDK abstractions and API contracts between model and agent outputs and downstream consumers, decoupling rapid model iteration from product stability and reducing integration friction across teams. 
  • Deliver infrastructure-as-code reference implementations (AWS CDK, Terraform, containerized services) and transform exploratory AI proof-of-concepts into hardened, reusable patterns adopted across product domains. 
  • Own platform cost-efficiency and scalability while preserving the performance and accuracy that our experiments and end users require. 
  • Explore and template agent design and deployment patterns, and set technical standards, code quality, and architectural direction for the platform. 
  • Partner across teams (modeling and agent teams, product) to align on integration points, dependency timelines, and delivery, and mentor engineers and scientists. 

Professional Experience & Qualifications 

  • B.S. or M.S. in Computer Science, Engineering, or a related field, with 10+ years of professional software development experience. 
  • Demonstrated track record architecting and maintaining large-scale distributed systems in production at technology companies. 
  • Deep expertise in workflow orchestration and event-driven architecture, including stateful execution, idempotency, durable retries, and replay. 
  • Strong cloud-native engineering on AWS with infrastructure-as-code, containerization, and autoscaling. 
  • Proven ability to take systems from prototype to hardened, observable, operationally excellent production. 
  • Experience designing SDKs, APIs, and data contracts that serve multiple downstream teams. 
  • Excellent communication skills and the ability to build organizational consensus around platform decisions. 
  • Collaborative and empathetic working style: listens to understand the needs of scientists, engineers, and downstream teams, and leads through influence. 
  • Proven track record setting technical strategy and direction for a growing engineering organization, and mentoring engineers in a fast-moving environment. 

Preferred Qualifications 

  • Hands-on experience with agentic AI and orchestration frameworks (e.g., Pydantic AI, LangGraph, LangChain, CrewAI, AutoGen). 
  • Experience integrating LLMs and model platforms, including Anthropic, OpenAI, Vertex AI, and Amazon Bedrock, and building evaluation and feedback-loop frameworks for agentic systems. 
  • Familiarity with sandboxed code execution and agent harness development. 
  • Experience with LLM observability and monitoring tooling and cost-governance / FinOps for AI infrastructure. 
  • Background in scientific domains such as biology, chemistry, or complex systems (a plus, not required). 

Why Join Us 

By joining the Agentic AI team within Flagship's Pioneering Intelligence group, you will: 

  • Own the platform foundation for a category-defining autonomous scientific reasoning engine. 
  • Take frontier agentic AI from research to dependable production at scale. 
  • Collaborate with visionary thinkers and top-tier researchers across Flagship's ecosystem. 
  • Set the technical standards that the broader platform and product teams build on. 
  • Shape the future of AI-powered discovery in a role that combines deep engineering excellence with direct human-health impact. 

ABOUT FLAGSHIP PIONEERING

Flagship Pioneering invents and builds platform companies, each with the potential for multiple products that transform human health, sustainability and beyond. Since its launch in 2000, Flagship has originated more than 100 companies. Many of these companies have addressed humanity's most urgent challenges: vaccinating billions of people against COVID-19, curing intractable diseases, improving human health, preempting illness, and feeding the world by improving the resiliency and sustainability of agriculture.  

Flagship has been recognized twice on FORTUNE's "Change the World" list, an annual ranking of companies that have made a positive social and environmental impact through activities that are part of their core business strategies and has been twice named to Fast Company's annual list of the World's Most Innovative Companies. Learn more about Flagship at www.flagshippioneering.com.

At Flagship, we accept impossible missions to enable bigger leaps. Our core values guide us through uncertainty and toward lasting impact.

We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law.

We recognize that great candidates often bring unique strengths without fulfilling every qualification. If you have some of the experience listed above but not all, please apply anyway. We are dedicated to building diverse and inclusive teams and look forward to learning more about your background and interest in Flagship.

Recruitment & Staffing Agencies: Flagship Pioneering and its affiliated Flagship Lab companies (collectively, "FSP") do not accept unsolicited resumes from any source other than candidates. The submission of unsolicited resumes by recruitment or staffing agencies to FSP or its employees is strictly prohibited unless contacted directly by Flagship Pioneering's internal Talent Acquisition team. Any resume submitted by an agency in the absence of a signed agreement will automatically become the property of FSP, and FSP will not owe any referral or other fees with respect thereto.

#LI-MB1

The salary range for this role is $188,000 - $257,500. Compensation for the role will depend on a number of factors, including a candidate's qualifications, skills, competencies, and experience. Pioneering Intelligence currently offers healthcare coverage, annual incentive program, retirement benefits and a broad range of other benefits. Compensation and benefits information is based on Pioneering Intelligence's good faith estimate as of the date of publication and may be modified in the future.

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