Senior Software Engineer

Accordion; Town of Tonawanda (NY); Hybrid; USD 110,000 - 200,000; Full time

Job summary

Accordion is recruiting for two levels: Associate Software Engineer and Senior Software Engineer. You’ll work on agentic systems, write the agent logic, the RAG pipeline, and the eval harness for live client engagements, growing toward owning a workstream.

This is a highly technical, fast-paced, client-facing role where you’ll ship code from day one, learn the data landscape, and collaborate with AI engineers, data scientists, and product teammates to deliver real value.

Qualifications

• Solid Python and/or TypeScript/React fundamentals.
• Hands-on exposure to LLM application development: RAG, tool use, prompt engineering, or agent orchestration.
• Genuine use of AI coding tools in your workflow; talk concretely about speedups.
• Comfort with ambiguity and a fast pace; client-facing, consulting-style environment.

Responsibilities

• Build and ship components of multi-agent systems and RAG pipelines for PE-backed portfolio company engagements under guidance of senior engineers.
• Contribute to prompt engineering, tool design, and deployment for production AI systems.
• Write and run evals as part of eval-driven development; define success criteria before you build.
• Translate client requirements into technical tasks with support from your pod on ambiguous parts.
• Build observability into the systems you ship so quality is measurable.
• Senior level: own a workstream end-to-end and present architecture decisions to stakeholders.

Skills

Python

TypeScript/React

LLM development

Prompt engineering

Tool use & automation

Ambiguity tolerance

Client-facing communication

Tools

LangChain

LangGraph

AutoGen

DSPy

Job description

Company Overview

We are the better way to work in finance. As private equity’s value creation partner, we sit at the heart of PE where sponsors and CFOs meet. Through financial consulting rooted in data, technology, and AI, we help clients drive value supporting the office of the CFO to drive end-to-end value creation.

If you crave challenging work and are looking to grow, come solve complex issues alongside 1,600+ finance & technology experts in a supportive, collaborative environment.

Backed by premier private equity firms and headquartered in New York with 11 offices around the globe, we are a high-growth, entrepreneurial firm looking for people who want to be part of building something great. Come make your mark.

Data & Analytics

Accordion's Data & Analytics (D&A) team offers cutting-edge, intelligent solutions to a global clientele, leveraging a blend of domain knowledge, sophisticated technology tools, and deep analytics capabilities to tackle complex business challenges.

We partner with Private Equity clients and their Portfolio Companies across diverse sectors, including Retail, CPG, Healthcare, Media & Entertainment, Technology, and Logistics.

This role can be based in any of our US office locations and is a hybrid role with the flexibility to work remotely 2 days a week. Ideal candidates should be local to the desired location.

This position is not eligible for immigration sponsorship.

Accordion Intelligence Lab

The AI Lab is composed of leading software and AI engineers, designing agentic-AI solutions ahead of the market. Our group builds and operationalizes the AI systems that power Accordion’s consulting capabilities, from agentic architectures and RAG pipelines to evaluation frameworks and production observability.

New hires join AI-augmented delivery pods, working alongside AI engineering, data, and product teammates from day one, and initially integrate with the broader Lab team before moving into a specialized pod.

About The Role

This posting covers two levels: Associate Software Engineer and Senior Software Engineer. We’re looking for engineers who want to build real agentic systems, not tinker with demos. You’ll work under the direction of Staff-level engineers on live client engagements - writing the agent logic, the RAG pipeline, the eval harness - and growing steadily toward owning a workstream yourself.

This is a highly technical, hands‑on role in a high-velocity, client-facing environment: sprints are short, client expectations are high, and the work is real from week one. You’ll be expected to ship fast, learn quickly, and raise your own bar on what AI-assisted delivery looks like. If you’ve spent time in large enterprise engineering organizations where velocity is constrained by process, this will feel different.

The people who thrive here are those who find the pace energizing, not exhausting, and are comfortable being early in their AI-native career while still moving at a fast clip. They treat AI tools as something to get genuinely good at using, communicate clearly with non-technical stakeholders, and course-correct quickly when something isn’t working.

What You’ll Do

• Build and ship components of multi-agent systems and RAG pipelines for PE-backed portfolio company engagements, under the guidance of more senior engineers
• Contribute to prompt engineering, tool design, and deployment for production AI systems
• Write and run evals as part of eval-driven development - define success criteria before you build, not after
• Help translate client requirements into technical tasks, with support from your pod on the ambiguous parts
• Build observability into the systems you ship so quality is measurable, not assumed
• At the Senior level: independently own a workstream (an agentic pipeline, a RAG system, or an eval framework) end-to-end, and present your own architecture decisions to internal and client stakeholders

Success in the First 6 Months

• Associate: productive on an active client engagement within 30 days; shipping real code and learning the client’s data landscape quickly; contributing meaningfully to at least one production system by month 6
• Senior: shipped at least one end-to-end agentic solution from scoping through production; owns a workstream independently; has built enough credibility with the pod and the client to be trusted with the next hard problem without heavy hand-holding

What You’ll Bring

• Solid Python and/or TypeScript/React fundamentals - you write clean code and can reason about what a framework is doing underneath it
• Some hands‑on exposure to LLM application development: RAG, tool use, prompt engineering, or agent orchestration (production experience preferred; strong coursework/side-project depth considered for Associate level)
• Genuine use of AI coding tools (Claude Code, Cursor, or similar) in your own workflow - you should be able to talk concretely about where they speed you up
• Comfort with ambiguity and a fast pace - you won’t always get a clean spec, and that’s the job
• Willingness and ability to learn quickly in a client‑facing, consulting‑style environment

Nice to Have

• Any finance/PE domain exposure - FP&A, GL data, ERP systems (NetSuite, SAP)
• Familiarity with LangChain/LangGraph, AutoGen, DSPy, or similar orchestration frameworks
• Public work you can point to: a GitHub repo, a side project, a blog post - anything that shows how you think about building
• Any prior internship, co‑op, or junior role with client- or user-facing exposure

The annual salary for this role ranges from: $110,000 to $200,000 USD + bonus + benefits, spanning both levels in this posting. Actual compensation packages are determined by evaluating a wide array of factors unique to each candidate, including but not limited to level, geographic location, skill set, years and depth of experience, education, certifications, cost of labor and internal equity.

THIS POSTING IS FOR A CURRENT VACANCY AND THE EMPLOYER INTENDS TO FILL THIS POSITION BY DECEMBER 9, 2026.

Accordion is an Equal Opportunity Employer. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law.

Please note that as per Accordion policy, we do not accept unsolicited resumes from third‑party recruiters unless such recruiters are engaged to provide candidates for a specified opening and in alignment with our inclusive diversity values. Any employment agency, person or entity that submits an unsolicited resume does so with the understanding that Accordion will have the right to hire that applicant at its discretion without any fee owed to the submitting employment agency, person or entity.