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Senior Principal Software Engineering App Performance C in New York

5 active opportunities · Updated for September 2026

Market range: $105.3K – $242.3K/yr

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Explore current senior principal software engineering app performance c jobs in New York. Use filters to narrow by work mode, employment type, experience and date posted.

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Enigma
📍 New YorkFull-time$180K – $295K/yr
4 days ago

The Opportunity Join Enigma's Growth & KYB Team at a pivotal moment as we continue to create sales and marketing solutions for small businesses. We're seeking an experienced Senior Software Engineer to develop and build innovative data products and systems that directly impact our customers and accelerate our growth. Your work will influence decisions for companies that employ half the U.S. workforce, creating tremendous value for our clients. The Role As a member of the Growth & KYB Team, you will: Design, develop and deliver data products that solve critical customer pain points and build scalable, high-quality systems that deliver rich interactions with our data. Engage with software engineers, data scientists, and product managers to create experiences that move a customer from discovery to evaluation to purchase. Analyze and extract value from data at scale, building efficient, maintainable production-grade data solutions. Create scalable and highly maintainable systems deployed in cloud environments. Own architecture and design decisions as well as hands-on implementation, ensuring that customer experiences are compelling and have low costs of ownership. What You’ll Do Operates with a bias for action and knows how to deliver value in the short, medium, and long term. Loves interacting with product teams and works hard to solve customer problems in a repeatable way. Adopts a principled, metrics-driven approach to difficult data problems and demonstrates excellence in their analytics and engineering craft. Operates transparently, collaboratively, and with low ego—loves learning from others and having their ideas questioned and challenged. Has a “can-do” attitude and thrives on a highly collaborative, cross-functional team that plays a critical role in the company’s success. Is eager to own architecture and design decisions as well as hands-on implementation. What Makes This Role Exciting? Impact : Develop products that take an innovative data-first appro

pythonaigo
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E
Enigma
📍 New YorkFull-timeFrom $180K/yr
4 days ago

The Opportunity This is an exciting time at Enigma. We’re on the cusp of releasing our next generation of small business intelligence products built on years of learnings in the space. We are seeking an experienced Data Scientist to join our Entity Resolution team and help shape the trajectory of these products. Your work will directly impact the accuracy, scalability, and predictive capabilities of our data platform, influencing key business decisions for our customers. The Role Data is at the core of Enigma’s product, which makes data science the beating heart of what we ship. As a Data Scientist on the Entity Resolution Team, you will work in a cross-functional team alongside other data scientists, engineers, and business stakeholders. You will own problems end to end–from raw source data, through models and scalable pipelines, to the customer interface. Your impact will be measured by the contributions you make with your team to improve the accuracy of our data and the value of our product to our customers. What You’ll Do Translate customer goals into working solutions, using large-scale data transformation, sound statistics, and high-quality code. Most of our work is in Databricks (both Spark SQL + PySpark), supported by statistical tooling, and by ML/AI where the problem calls for it. Set a high standard for rigorous analysis and model development, grounded in sound statistical practice, so that results are high-quality and reproducible. Treat data as a reflection of the real world, and develop repeatable strategies for validating results against ground truth. Develop techniques to detect gaps in our data, find the source, and close them in a way that improves the product. Apply a data-focused, first-principles approach to problem solving. We value people who bias toward simple and elegant solutions, but who can implement state-of-the-art models and techniques when the problem requires it What Makes This Role Exciting? Technical challenge : Enigma

pythonsqlmachine learning
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E
Enigma
📍 New YorkFull-time$180K – $295K/yr
4 days ago

The Opportunity This is a critical and exciting time at Enigma. Our customers consistently tell us that our data products create tremendous value and are deeply aligned with their most important workflows. As demand grows, we have an urgent opportunity to improve both the intelligence of our data and the systems through which customers access it. We are looking for an experienced Senior/Staff Machine Learning Engineer to join our Match Team and help shape the next generation of Enigma’s customer-facing data products. In this role, you will combine advanced statistical and machine learning research with the engineering systems required to power fast, relevant, and reliable search experiences at scale. This is a uniquely high-impact role sitting at the intersection of information retrieval, ranking systems, semantic search, distributed systems, and customer data delivery. The Role At the core of Enigma’s product is our data, which makes both data science and delivery systems central to what we build. As a Senior/Staff ML Engineer on the Match Team, you will lead efforts that improve the relevance, latency, and scalability of our customer-facing data products. You’ll work across the full lifecycle: framing retrieval and ranking problems, developing models and experimentation strategies, evaluating results using real-world signals, and implementing high-throughput search and retrieval systems. This role is ideal for someone who is excited by both hard ranking/search problems and the systems challenges of turning those solutions into low-latency, production-grade retrieval systems. What You'll Do Develop innovative solutions to complex problems in information retrieval, ranking, semantic search, query understanding, and recommendation systems Build and optimize low-latency, high-throughput search APIs, indexing pipelines, and retrieval systems using Python, Typesense, and AWS Evaluate and evolve our search technology stack, driving technical design decisions across index

pythonawsmachine learning
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O
Orchestra
📍 New YorkFull-timeFrom $115K/yr
4 days ago

Small Girls PR is looking for an Experiential Production Director with 7–9 years of experience leading multichannel projects across in-person activations and digital experiences. This includes developing cohesive experiential strategies, managing client relationships, concepting standout experiences that drive social conversation and press coverage, overseeing technical execution, managing complex timelines and large budgets, and developing talented producers. Experience working with clients / brands within fashion and/or beauty is highly valued for this role. This role will serve as the senior day-to-day lead across experiential accounts and projects, connecting creative ideas and production plans to clients’ broader brand and business objectives. The Experiential Production Director will work closely with senior leadership, keeping them informed of campaign progress, strategic or budgetary shifts, client needs, team performance, and potential risks. The right candidate knows how to lead a campaign from ideation through post-production and can project manage in their sleep. They are also prepared to dive into the details, knowing that no task is too small in the world of events. This role will work with a wide range of creative and innovative brands across beauty and fashion, food and beverage, wellness, consumer technology, and more. Ideally this candidate has agency experience and is adept at client interface, in addition to execution. There is no one-size-fits-all for an SGPR client, which means your career will be enriched with meaningful and diversified experience. We’ve busted beauty myths with OLAY in Bryant Park, spotlighted Violife with a cheeky Election Day campaign, and reintroduced a Jack in the Box product as a “return from the grave” with a Halloween cemetery screening. From events and mailers to brand partnerships and hotlines, if the team can dream up an idea for audiences to see, do, or touch, our experiential team can produce it. Note: This role i

gitrestai
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Who we are About Privy Our mission is to make privacy and user ownership the default online. We build simple, flexible application programming interfaces (APIs) and tools that help developers create products on crypto infrastructure. Privy provides the abstraction and infrastructure layer above wallets, integrating across blockchain networks, third-party providers, and Stripe products such as Treasury and Link. We solve complex technical problems while using Stripe’s global reach to support customers including Ramp, Klarna, Deel, Kraken, Hyperliquid, and Fomo. Our technology powers experiences for both mainstream users and crypto-native audiences. Learn more: [Privy and Stripe: Bringing crypto to everyone ] About the team The Account Executive, Product team connects Privy’s technology with companies building new products across fintech and crypto. The team works closely with Product, Engineering, and Go-to-Market partners to understand prospective customers’ needs, shape technical and commercial solutions, and turn market insights into product and sales strategy. Its focus includes priority segments such as neobanking, payments, and brokerages. What you’ll do As an Enterprise Account Executive you’ll own complex enterprise sales cycles and help expand Privy’s work with companies across fintech and crypto. You’ll build relationships with senior commercial and technical stakeholders, develop new opportunities, and help refine Privy’s enterprise sales approach. You’ll also contribute to Privy’s global growth strategy and represent the company at industry events. Responsibilities Partner with the Head of Go-to-Market (GTM) to build and close a strong pipeline of enterprise prospects. Develop and test outbound campaigns based on market and customer feedback. Manage a pipeline across multiple ideal customer profiles. Build deep expertise in Privy’s products and lead discovery calls with fintech prospects to understand their needs and explain Privy’s value. Own

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