Staff Software Engineer

Staff Software Engineer - Payments Transfer

We build simple yet innovative consumer products and developer APIs that shape h...

Location

United States , San Francisco

Salary:

202800.00 - 330000.00 USD / Year

Plaid

Expiration Date

Until further notice

Requirements

At least 3-5 years working on payments, billing, invoicing or other financial infrastructure systems
Proven track record of building and operating systems that process payments at scale (e.g., high throughput, high reliability, complex flows such as refunds, settlement)
Strong proficiency in distributed system design, architecture, performance optimization, observability, reliability engineering
Experience setting and maintaining engineering best practices (testing, code review, continuous integration/deployment, on-call practices)
Excellent communication: able to engage with business/product/operations stakeholders, articulate technical trade-offs, drive alignment

Job Responsibility

Lead the technical direction of the transfer system including transfer customer onboarding, billing, bookkeeping, payments processing, reconciliation systems
Collaborate across product, design, operations, partnership, and legal teams to make sure the technical solution meets business needs
Discover system quality and reliability opportunities and proactively drive improvements and technical roadmap
Work hands-on: write and review technical designs, write and review code, lead major technical initiatives and new feature development
Mentor engineers and contribute to a strong, inclusive team culture

What we offer

medical
dental
vision
401(k)
equity
commission

Fulltime

Senior Staff Software Engineer

We're on a mission to reinvent the financial system and make it work for people....

Location

United States

Salary:

251000.00 - 306000.00 USD / Year

EarnIn

Expiration Date

Until further notice

Requirements

8+ years of development experience in backend or full-stack software development, including IC Leadership experience
Bachelor's, Master’s, or PhD degree in computer science, computer engineering, or a related technical discipline, or equivalent industry experience
Expertise in trade-off analysis for distributed architectures
Proficient in at least one modern programming language, and the ability to understand more than one - we currently work in Kotlin and C#
Proficient in running multiple critical tech initiatives in parallel
Familiarity with the clean architecture approach
Experience with various data storage, including relational and document databases
Excellent written and verbal communication skills
Being self-motivated and able to work independently with minimal supervision

Job Responsibility

Drive the design & implementation of new features and/or re-architect existing systems - break down complex problems into their bare essentials, translate this complexity into elegant design, and create high-quality, maintainable code
Make a meaningful impact on the lives of our community members
Design & deliver robust microservice integrations via REST/gRPC APIs using various communication, consistency, and coordination strategies
Collaborate and mentor other senior engineers while providing thoughtful guidance using code, design, and architecture reviews
Contribute to defining technical direction, planning the roadmap, escalating issues, and synthesizing feedback to ensure team success
Estimate and manage team project timelines and risks
Care passionately about producing high-quality designs and code
Participate in hiring and onboarding for new team members
Lead cross-team engineering initiatives

What we offer

equity and benefits

Fulltime

Staff Software Engineer, Backend

The Staff Engineer will work closely with AI/ML engineers, product managers, app...

Location

United States , NYC

Salary:

160000.00 - 190000.00 USD / Year

Conductor

Expiration Date

Until further notice

Requirements

Completed studies in Computer Science, Mathematics, engineering or a related field or equivalent professional experience
8+ years of experience in software development, with experience in product-driven companies
Strong expertise in system design, distributed computing, and scalable architecture patterns for handling large datasets and high-throughput applications
Proficiency in multiple programming languages with strong Python coding skills. Experience with Java is highly valued
Strong database experience including both SQL and NoSQL systems, with knowledge of data modeling and optimization techniques
Experience with AI/ML technologies including LLMs, vector databases (e.g., Milvus), embeddings, and ML frameworks
Knowledge of MLOps practices, model deployment, and AI system integration in production environments
Experience working across the full software development lifecycle including CI/CD, monitoring, testing, and production deployment
Proven track record of technical leadership, mentoring engineers, and driving engineering excellence within teams
Up-to-date with rapidly-evolving technologies and demonstrated ability to evaluate and adopt new tools and frameworks

Job Responsibility

Lead the technical architecture, design, and implementation of large-scale distributed systems and data platforms to support customer needs and business growth
Oversee the planning, execution, and successful delivery of complex engineering projects, ensuring adherence to engineering best practices and quality standards
Design and build scalable, high-performance backend systems and APIs that handle millions of requests and large datasets efficiently
Architect robust data processing pipelines and ETL workflows using modern cloud technologies and distributed computing frameworks
Drive technical decision-making across the engineering organization, evaluating trade-offs and establishing engineering standards and practices
Lead cross-functional collaboration with product, AI/ML engineering, data engineering, and infrastructure teams to deliver comprehensive solutions
Build and maintain CI/CD pipelines, monitoring systems, and deployment automation to ensure reliable software delivery
Implement AI/ML capabilities including LLM integration, vector databases, and intelligent content processing workflows
Mentor senior and junior engineers, fostering technical excellence and knowledge sharing within the engineering organization

What we offer

100% covered employee medical plan
a dental & vision plans
401(k) with employer contribution
an unlimited vacation policy
10 sick days
short-term disability
long-term disability
generous paid parental leave
employee assistance program
flexible savings accounts

Fulltime

Staff Software Engineer, Forward Deployed

As a Staff Forward Deployed Engineer (FDE) at Invisible, you'll lead high-impact...

Location

United Kingdom , London

Salary:

Not provided

Invisible Technologies

Expiration Date

Until further notice

Requirements

5+ years of software engineering experience, including significant time spent building data, ML, or backend systems
Deep proficiency in Python and experience with ML/LLM frameworks such as Hugging Face, LangChain, OpenAI, Pinecone, etc.
Familiarity with full-stack or API-based deployment patterns (Docker, FastAPI, Kubernetes, GCP/AWS)
Strong product and system design instincts — you understand business needs and how to translate them into technical architecture
Experience building usable systems from messy data and ambiguous requirements
Excellent communication and client-facing skills
you’ve led conversations with technical and non-technical stakeholders alike
Proven experience owning projects from scoping through deployment in ambiguous, high-stakes environments
Be willing to be on-call for our customers when situations ari
Ability to travel roughly 25–50 % of the time, sometimes short-notice trips—primarily across Europe with occasional international roll-outs—to work directly on-site with clients

Job Responsibility

Partner with delivery and executive stakeholders to scope, design, and lead implementation of AI-driven solutions
Identify transformational opportunities in messy, ambiguous workflows and turn them into repeatable systems
Lead architecture design and trade-off discussions across performance, scalability, cost, and reliability
Own projects from first discovery call through full deployment — including client-facing delivery, internal coordination, and post-launch iteration
Build shared infrastructure, reusable components, and internal playbooks to level-up the team
Coach and mentor mid-level engineers and help shape the culture of forward-deployed AI engineering at Invisible

What we offer

Bonuses and equity are included in offers above entry level

Fulltime

Staff Software Engineer, Forward Deployed

As a Staff Forward Deployed Engineer (FDE) at Invisible, you'll lead high-impact...

Location

Poland , Warsaw

Salary:

33000.00 - 43000.00 PLN / Month

Invisible Technologies

Expiration Date

Until further notice

Requirements

8+ years of software engineering experience, including significant time spent building data, ML, or backend systems
Deep proficiency in Python with hands-on experience using Hugging Face, LangChain, OpenAI, Pinecone, and related ecosystems
Skilled in full-stack and API-based deployment patterns, including Docker, FastAPI, Kubernetes, and cloud environments (GCP, AWS)
Experienced with workflow orchestration libraries, pub/sub systems (Kafka), and schema governance
Expertise in data governance and operations, including Unity Catalog and policy management, cluster/job orchestration, data contracts and quality enforcement, Delta/ETL pipelines, and replay processes
Strong product and system design instincts — you understand business needs and how to translate them into technical architecture
Experience building usable systems from messy data and ambiguous requirements
Excellent communication and client-facing skills
you’ve led conversations with technical and non-technical stakeholders alike
Proven experience owning projects from scoping through deployment in ambiguous, high-stakes environments

Job Responsibility

Partner with delivery and executive stakeholders to scope, design, and lead implementation of AI-driven solutions
Identify transformational opportunities in messy, ambiguous workflows and turn them into repeatable systems
Lead architecture design and trade-off discussions across performance, scalability, cost, and reliability
Own projects from first discovery call through full deployment — including client-facing delivery, internal coordination, and post-launch iteration
Build shared infrastructure, reusable components, and internal playbooks to level-up the team
Coach and mentor mid-level engineers and help shape the culture of forward-deployed AI engineering at Invisible

What we offer

Bonuses and equity are included in offers above entry level

Fulltime

As a Staff Forward Deployed Engineer (FDE) at Invisible, you'll lead high-impact...

Location

United States , Austin; New York; San Francisco Bay Area; Washington DC–Baltimore

Salary:

213000.00 - 300000.00 USD / Year

Invisible Technologies

Expiration Date

Until further notice

Requirements

8+ years of software engineering experience, including significant time spent building data, ML, or backend systems
Deep proficiency in Python with hands-on experience using Hugging Face, LangChain, OpenAI, Pinecone, and related ecosystems
Skilled in full-stack and API-based deployment patterns, including Docker, FastAPI, Kubernetes, and cloud environments (GCP, AWS)
Experienced with workflow orchestration libraries, pub/sub systems (Kafka), and schema governance
Expertise in data governance and operations, including Unity Catalog and policy management, cluster/job orchestration, data contracts and quality enforcement, Delta/ETL pipelines, and replay processes
Strong product and system design instincts — you understand business needs and how to translate them into technical architecture
Experience building usable systems from messy data and ambiguous requirements
Excellent communication and client-facing skills
you’ve led conversations with technical and non-technical stakeholders alike
Proven experience owning projects from scoping through deployment in ambiguous, high-stakes environments

Job Responsibility

Partner with delivery and executive stakeholders to scope, design, and lead implementation of AI-driven solutions
Identify transformational opportunities in messy, ambiguous workflows and turn them into repeatable systems
Lead architecture design and trade-off discussions across performance, scalability, cost, and reliability
Own projects from first discovery call through full deployment — including client-facing delivery, internal coordination, and post-launch iteration
Build shared infrastructure, reusable components, and internal playbooks to level-up the team
Coach and mentor mid-level engineers and help shape the culture of forward-deployed AI engineering at Invisible

What we offer

bonus
equity
benefits

Fulltime

Staff Software Engineer, AI Runtime

We’re seeking a Staff Software Engineer to help power the future of agentic AI w...

Location

United States

Salary:

185000.00 - 215000.00 USD / Year

Apollo GraphQL

Expiration Date

Until further notice

Requirements

Expertise in agent-to-tool orchestration, routing, and coordination in scalable, fault-tolerant systems
Deep expertise in Rust programming language
Strong background in distributed systems, server architecture, and high-performance backend development
Proven experience with protocol design, message routing, and server-side orchestration frameworks
Experience building and maintaining robust runtime infrastructure that supports AI-driven workflows and enables reliable agent-to-tool interactions
Proven experience with protocol design, message routing, and building server-side frameworks that enable scalable, reliable multi-tool agent workflows
Hands-on experience with observability, monitoring, and debugging frameworks for complex systems
Passion for clean, maintainable code, high system reliability, and scalable architecture
Experience in strategic system design, making architectural trade-offs, and planning for long-term scalability and maintainability
Strong technical leadership and mentorship, including guiding junior engineers and driving engineering best practices across teams

Job Responsibility

Architect and scale an enterprise AI/MCP Server and Gateway that powers multi-agent workflows across Apollo, including routing, orchestration, and integration boundaries
Design and implement robust server infrastructure to ensure reliability, performance, and security at scale
Build and maintain tools for agent discovery, communication, and coordination
Define deployment strategies and runtime optimizations to maximize efficiency and minimize operational overhead
Develop frameworks and patterns that enable seamless multi-agent collaboration and AI-driven orchestration
Integrate observability, logging, and monitoring for full visibility into server and agent behavior
Explore and implement AI-enhanced developer workflows to optimize orchestration and agent interactions
Collaborate with teams across Apollo to ensure the MCP Server meets evolving product and developer needs

What we offer

Offers Equity
Choice of 3 Anthem Blue Cross medical plans (California residents can also choose from an additional 2 Kaiser medical plans)
Dental and Vision benefits are provided by Sun Life Financial

Fulltime

Staff Software Engineer, Back-end

Affirm is reinventing credit to make it more honest and friendly, giving consume...

Location

Spain

Salary:

101000.00 - 131000.00 EUR / Year

Affirm

Expiration Date

Until further notice

Requirements

8+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
Extensive track record of developing highly available distributed systems using technologies like AWS, MySQL, Spark and Kubernetes
Strong verbal and written communication skills that support effective collaboration with our global engineering team
Experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan
Write high quality code that is easily understood and used by others
On-Call Rotation

Job Responsibility

Set technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects
Collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed
Act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes
Take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, polcities, testing and alerting in place to support “keep the lights on” & on-call efforts
Foster a culture of quality and ownership on your team by setting code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks
Help develop talent on your team by providing feedback and guidance, and leading by example

What we offer

Flexible Spending Wallets for tech, food and lifestyle
Away Days - wellness days to take off work and recharge
Learning & Development programs
Parental benefit
Employee Resource & Community Groups
Health care coverage - Affirm covers all premiums for all levels of coverage for you and your dependents
Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
ESPP - An employee stock purchase plan enabling you to buy shares of Affirm at a discount
Visa sponsorship

Fulltime

Staff Software Engineer - Trading Systems

Clear Street

Location:
United States , New York

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 07, 2025

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