Senior Application Developer Jobs

InvGate is a fast growing SaaS company that develops products for IT management and service automation, used by clients in over 50 countries in industries such as banking, e-commerce, education and technology. To support our continuous growth we are looking for a Customer Success Representative to join our team. As a Customer Success Representative , you will play a pivotal role in ensuring our clients achieve success with our solutions. You will be responsible for building strong relationships with different stakeholders within your customers, driving product adoption, and ensuring long-term retention. By acting as a trusted advisor, you will help clients maximize the value they get from our solutions. We are looking for a person with technical knowledge, energy, empathy, client orientation, versatility, and operational experience to execute our Customer Success plans. This position will work closely with the product, implementation, support, and sales department. Key Responsibilities: Serve as the primary point of contact for assigned customers, ensuring their needs are met effectively. Drive customer engagement by providing training and ongoing support. Develop and execute success plans to ensure customers achieve their desired outcomes. Proactively identify risks and collaborate with internal teams to resolve issues. Monitor key customer health metrics to drive retention and growth. Advocate for customers by gathering feedback and collaborating with product teams to enhance our solutions. Maintain accurate records in HubSpot and ensure seamless communication across departments. Set follow-up meetings to check customers' satisfaction and needs. Qualifications Previous experience in Customer Success, software implementation, or Account Management, either technical and/or commercial. Strong communication, problem-solving, and relationship-building skills. Ability to analyze customer data and translate insights into actionable strategi

Présentation du poste : Au sein de l'équipe Data Science d'Artefact, vous rejoignez une communauté d'experts en Data & IA intervenant auprès de grands comptes mondiaux. Dans un contexte de forte accélération autour de la GenAI et du Machine Learning, vous jouez un rôle clé dans la conception, la livraison et le passage à l'échelle de solutions IA à fort impact business. Ce qu’on attend de vous : En tant que profil Senior, vous garantissez l'excellence technique sur vos projets (robustesse, MLOps, passage en production) tout en servant de référent auprès de nos clients. Vous jouez un rôle moteur dans l'équipe en mentorant des Data Scientists plus juniors et en participant au développement d'accélérateurs internes. Vos missions : Piloter la livraison de projets IA de bout en bout : du cadrage des cas d'usage avec les équipes métier jusqu'à la mise en production de solutions ML ou GenAI mesurables. Concevoir des architectures et pipelines IA robustes et scalables en appliquant les meilleures pratiques de Software Engineering et de MLOps (tests, déploiement, maintenabilité). Servir de conseiller de confiance auprès des clients : vulgariser les approches IA de façon claire et pragmatique, évaluer la faisabilité, les risques et le ROI. Mentorer et faire monter en compétences les Data Scientists juniors à travers des retours constructifs, des revues de code et du coaching au quotidien. Contribuer au développement de l'expertise interne : créer des outils/accélérateurs réutilisables, animer des ateliers de partage et maintenir une veille technologique active. Explorer et appliquer des techniques IA avancées pour résoudre des problématiques complexes et non défrichées. Profil recherché : Expérience & Mindset : 3 ans ou plus d'expérience concrète dans le développement et le déploiement de solutions Data/IA en environnement Cloud. Expertise Technique : Solides compétences en Machine Learning appliqué, IA Générative, ainsi qu'une maîtrise des principes de Software Engin

Bloomreach is building the world’s premier agentic platform for personalization .We’re revolutionizing how businesses connect with their customers, building and deploying AI agents to personalize the entire customer journey. We're taking autonomous search mainstream, making product discovery more intuitive and conversational for customers, and more profitable for businesses. We’re making conversational shopping a reality, connecting every shopper with tailored guidance and product expertise — available on demand, at every touchpoint in their journey. We're designing the future of autonomous marketing , taking the work out of workflows, and reclaiming the creative, strategic, and customer-first work marketers were always meant to do. And we're building all of that on the intelligence of a single AI engine — Loomi — so that personalization isn't only autonomous…it's also consistent.From retail to financial services, hospitality to gaming, businesses use Bloomreach to drive higher growth and lasting loyalty. We power personalization for more than 1,400 global brands, including American Eagle, Sonepar, and Pandora. About the Role: Bloomreach is seeking a Senior Customer Success Manager to be our customers' advocate and the key to a successful client partnership. Our Customer Success teams are focused on adoption, retention and customer satisfaction, and on identifying new opportunities to expand our relationships. You will run a portfolio of accounts of varying size, tier and industry. This is a technically fluent Customer Success role. You will not be writing integration code or building data pipelines — our Technical and Business Consultants do that. The role is also changing quickly, our product, our AI capabilities and our customers' expectations all move fast, and the job looks different each quarter. We want someone who treats that as the interesting part. What you'll do: Be the trusted advisor. Build lo

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on Trustpilot, based on 55,000+ reviews. Our culture puts customer satisfaction at the core of what we do, as proven by our Net Promoter Score of 75 (more about our culture here). Our journey: Founded in 2017 by Alexandre and Steve, Qonto has grown to 1,700 Qontoers serving over 750,000 customers across 8 European countries. We have been profitable since 2023, and we are just getting started. Our beliefs: We hire for skills and potential. With 80+ nationalities, 45% women, of which 56% of women in our leadership team, diversity isn't a program; It's who we are. We've built a discrimination-free hiring process because the best teams are built on merit. AI at Qonto: AI is deeply embedded in how we work (here) - Every Qontoer gets unlimited access to the best AI tools. We want people who experiment without waiting for permission, push AI beyond the obvious, know when to trust it, and when to question it. ------------------------------------------------------------------------------------------------------ Location: You can choose to work at Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, Portugal, or Spain. ➡️ Mission Join us as an Android Engineer and help us build the mobile experience that 600,000+ European businesses rely on every day to manage their finances. You'll own product-critical features end-to-end — from technical design to rollout — in a large, modular Kotlin codebase where craft and velocity both matter. You'll work closely with Product, Design, Backend, and Frontend. ➡️ What you'll do Own features end-to-end: You'll take ownership from discovery and technical design through implementation, rollout, and iteration on features that help businesses pay, get paid, and stay in control. Drive technic

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on Trustpilot, based on 55,000+ reviews. Our culture puts customer satisfaction at the core of what we do, as proven by our Net Promoter Score of 75 (more about our culture here). Our journey: Founded in 2017 by Alexandre and Steve, Qonto has grown to 1,700 Qontoers serving over 750,000 customers across 8 European countries. We have been profitable since 2023, and we are just getting started. Our beliefs: We hire for skills and potential. With 80+ nationalities, 45% women, of which 56% of women in our leadership team, diversity isn't a program; It's who we are. We've built a discrimination-free hiring process because the best teams are built on merit. AI at Qonto: AI is deeply embedded in how we work (here) - Every Qontoer gets unlimited access to the best AI tools. We want people who experiment without waiting for permission, push AI beyond the obvious, know when to trust it, and when to question it. ------------------------------------------------------------------------------------------------------ Location: You can apply to work at Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, Portugal, or Spain. Mission Join us as an iOS Engineer and help us build the most intuitive mobile banking experience for European businesses. You'll be crafting features that directly impact the daily financial operations of over 600,000 SMEs across Europe, making their business finance simpler and more efficient. As an iOS Engineer at Qonto, you will: • Craft cutting-edge financial features: Work on critical architectural and UI features that will directly impact our end users. • Foster meaningful collaboration: Work closely with back-end teams, designers, and product managers to create a unified vision. • Solve rea

We are seeking a dynamic and inspiring individual to step into a Senior Therapist role at Lush Spa Covent Garden. Who we are At LUSH cosmetics, we believe in making effective products from fresh, organic fruit and vegetables, the finest essential oils and safe synthetics. We aim to leave the world Lusher than we found it; and at the LUSH SPA, we’re passionate about improving your sense of well-being, so you can feel your best self. We believe our spa treatments are more than skin deep; they’re a vital self-care ingredient. Our warm inviting spas are an oasis of calm, allowing time and space away from a busy world to relax and rejuvenate. Each Lush Spa treatment is an immersive experience, inviting you to enjoy the unexpected. Using a multi-sensory holistic approach, including soothing touch, visual displays, beautiful fragrances, and bespoke, crafted music made by Lush Fresh Handmade Sound, each treatment has a transformative effect, bringing you back into a state of peace and balance. Situated in the shopping and entertainment epicentre of London’s West End, Lush Spa Covent Garden never misses the opportunity to put on a show, it’s time for you to take centre stage and join our team! With 44 million visitors per year, who flock to Covent Garden for its world class shopping, dining and entertainment; this is the perfect stage and place for a Lush Spa. Who are we looking for? Are you passionate about Lush products and delivering exceptional spa experiences? Are you a confident leader with strong operational and team management skills? As a Senior Spa Therapist, you will support the Store & Spa Manager in delivering the vision and daily operations of the spa. You will lead by example, ensuring every client receives a 5-star experience while driving occupancy, sales, and team development. You will be responsible for supervising therapists and receptionists, ensuring all Lush treatments are consistently available, and coordinating training to meet business demands. You

About Us At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater. About the team SmithDB is LangChain's internal database team. We're building a storage and query layer purpose-built for AI observability and evaluation. Within six months we went from idea to a production system that offers industry leading performance and scalability for agent observability data. We're a small, fast team of systems engineers tackling genuinely hard problems: storage layout, query execution, compaction, and scaling toward trillions of agent traces. We develop in Rust, run on Kubernetes, and integrate tightly with S3/GCS/Azure Blob. There are no legacy constraints; this is a greenfield system with real production load and ambitious engineering goals. About th

About Us At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater. About the role: We're looking for a Senior Fullstack Engineer for our commercial product LangSmith, an observability and evals platform. In this role, you'll have the opportunity to shape the technical direction of our platform while working closely with enterprise customers, developer end-users and internal stakeholders. What You Will Do: Lead the technical architecture and implementation of key product features for LangSmith, working across our entire Go, Python, and Typescript stack. Collaborate closely with product and design teams to iterate on new features. Mentor and guide more junior members of the team. Drive aggressive project timelines while ensuring high engineeri

Who We Are Notion is the collaborative AI workspace where teams and agents think together . We're building one place where your knowledge, projects, meetings, and AI tools live side by side, so work is faster, clearer, and less fragmented. Millions of individuals, small teams, and large companies run their work on Notion. Notinos (our employees) are customer zero in bringing this future of work to life. We care about craft, building things that last, and the belief that great work is still fundamentally human. Our goal isn’t to ship the next feature. Each and every team of Notinos is working to set the standard for how humans work together in the AI era. From building a business’s system of record to making and managing AI agents to automating away the busy work, we care deeply about giving our customers more time for their life’s work. About the Role: Notion is building the connected AI workspace where teams and agents think together, bringing knowledge, projects, meetings, and AI tools into one place. Joining Corporate Accounting means helping build the financial foundation for a business shaping how work gets done in the AI era. As a Senior Accountant on Corporate Accounting, you’ll own key areas of general ledger accounting and the month-end close, helping ensure accurate, timely reporting. You’ll partner closely with FP&A and cross-functional stakeholders to explain fluctuations, surface issues, and support accurate reporting at Notion’s scale. This role is based in San Francisco. We work from our offices on Mondays, Tuesdays and Thursdays (our Anchor Days) because we do our best thinking and building together in person. We’re looking for someone who’s excited to work alongside the team during those days. What You'll Achieve: Own assigned areas across monthly, quarterly, and annual close: Prepare accurate journal entries and adjustments with clear supporting documentation, and complete close work on time. By your 90th day, independently manage your assigned

Senior Software Design Lead, IDEO San Francisco In a nutshell: IDEO San Francisco is in search of a Senior Software Design Lead who will architect the human and technical systems behind the digital products and AI experiences we design, build prototypes that behave like real production software, and be the technical voice client CTOs trust. You'll pick up design at IDEO along the way. Why is this role important for IDEO’s work? Software design makes the biggest impact by turning a product vision into something a client can actually build, and by testing ideas in working code rather than static screens. Their skillset is critical to our business because the work has evolved from designing interfaces to designing systems: how people, software, and AI agents behave together. We count on them to understand data models, APIs and agentic infrastructure from first principles, and speak credibly on technical choices with executives and engineering leaders. Once here you will: Work with product designers, product strategists and design researchers on 8–12+ week digital product engagements that may span from product vision and strategy to full end-to-end build. You will play a key role in turning human insights into technical architecture: data, APIs, integrations and the agentic layer. Build early prototypes with real data, real models and real integrations, so we learn quickly and lower the risk of big bets. Advise client executives and engineering teams on tech stack choices, build-vs-buy, evaluating APIs and LLMs, and feasibility. Design how agents and systems behave on a human's behalf, including guardrails, failure states and how the system stays legible to both people and machines. Raise the craft bar inside IDEO. Create reusable starter kits and toolkits so teams stop building from scratch, and coach designers who prototype in code. Help shape proposals and scope technical work in business development. What does IDEO offer you? IDEO is a place where you can solv

We are seeking a dynamic, operational leader to join our Care leadership team as the Senior Director, International Customer Care . In this role, you will shape the long-term, global care strategy for our rapidly expanding international customer base. We are looking for a humble, empathetic, and data-driven people leader who encompasses Toast’s Values and has deep experience building and leading large teams in a fast-paced customer success/support environment. The ideal candidate will have the executive presence to implement a clear vision, drive continuous process improvements, and inspire a high-performing international organization. If you are passionate about customer advocacy, operational rigor, and leading teams through international growth, read on! A day in the life (Responsibilities) Strategic Leadership: Define and execute the international support strategy aligned with company growth objectives, regional customer expectations, and product complexity. Team Scaling & Development: Lead, inspire, and develop a diverse, high-performing international team. Actively recruit and build a strong talent pipeline, while providing mentorship to subordinate leaders to maintain a robust culture of career development and succession planning. Operational Excellence: Own and continuously improve global KPIs, including CSAT, NPS, response/resolution times, SLA compliance, and cost-per-case efficiency across international markets. Process & Tool Optimization: Design and optimize tiered support models, coverage structures, and escalation frameworks. Implement best-in-class tools and automation (AI-assisted workflows, self-service, knowledge bases) to scale support effectively. Executive Engagement: Serve as the senior point of escalation for strategic international accounts. Build trusted, transparent relationships with senior customer stakeholders and work directly with customers when needed to ensure an exceptional experience. Cross-Functional Collaboration: Partner

P-1428 At Databricks, we run the world's largest AI platform. We believe the next breakthroughs will come from models trained on domain-specific enterprise data, not from bigger general-purpose models alone. That's why we built AI Runtime , a serverless product that makes GPU training of any size feel simple, so companies can train their own models the way frontier labs do. Customers across industries already use it to train models on governed data, from automotive AI at Rivian to Merck's TEDDY foundation models for single-cell biology and drug discovery, all the way to agents like KARL from Databricks AI Research. It takes a lot of engineering to make that work, and we've written about it on our blog: how we keep GPUs reliable , make training fault-tolerant , and speed up fine-tuning with fused kernels and smart sequence packing. As a Senior Software Engineer, you'll work on the systems behind all of this, solving hard technical problems and helping shape how AI Runtime evolves. The impact you will have: Build core parts of AI Runtime and contribute to Databricks' technical direction in AI training infrastructure. Develop reliability and observability features for a fleet that keeps growing in scale and complexity. Improve AI Runtime's developer experience, so the largest training jobs feel as simple as a first experiment. Help prepare AI Runtime for new GPU generations and workload types. Take on hard multi-node training problems, from orchestration and GPU scheduling to data loading and checkpointing. Make training faster and cheaper by raising GPU efficiency across model architectures and hardware generations. Work with research, product, and customers on what we build next and own features from design through production. Champion engineering excellence, raise the bar, and help the engineers around you grow. What we look for: 5+ years in large-scale distributed systems, with experience in GPU training, high-performance computing, or ML systems. Experience traini

About the Team The Risk & Insurance team at DoorDash is building the next generation of insurance capabilities for the company from the ground up. Insurance is one of DoorDash’s largest cost of revenue items, making this a highly impactful area with meaningful influence on the company’s bottom line. We partner across insurance, operations, and product development to create solutions that improve safety, reduce costs, and support long-term growth. This is a fast-evolving space with the opportunity to help shape new programs from early concept through launch and scale. We are looking for forward thinkers who are excited to build in a zero-to-one environment and work closely with cross-functional teams across DoorDash. About the Role We’re hiring a Senior Associate, Insurance S&O to help drive the operational, analytical, and cross-functional work needed to launch and scale multiple insurance initiatives in parallel. This person will support go-to-market execution through experiment management, reporting, vendor and procurement follow-through, and day-to-day program management, helping the team translate insights into product adoption and business impact. You will report into the Insurance Strategy & Operations lead on our Risk & Insurance team. You’re excited about this opportunity because you will… Run high-velocity operational tests and pilots that generate insights and help shape new products and programs from zero to one. Partner with Analytics and cross-functional teams to track performance, synthesize learnings, and inform go-to-market decisions. Support execution across a portfolio of insurance initiatives as they move from early concept through launch and scale. Coordinate with internal teams and external partners to drive vendor readiness, procurement follow-through, and operational launch execution. Help build the processes, reporting, and operating rhythm needed to support growth, including international expansion. We’re excited about you be

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. About the role: Avatars are core to our mission and everyday, millions of people come to Marketplace or other avatar shopping experiences to discover and shop for creations that help them express their individuality. They dress and play with their avatar as they connect with friends across thousands of immersive digital experiences. Powering the creativity of our Marketplace is our community of creators and developers who are building businesses and establishing their brand by selling creations. These creators range from individuals to small businesses to large brands, all of which are attracted to the Roblox platform, community and offerings. Our Marketplace is a critical component of Roblox’s economy, accounting for a third of economic activity on the platform. As a Senior Product Manager responsible for Avatar creators, you will have a front seat at shaping the future of the Marketplace and what it means to build an economy powered by our community. You will: Be responsible for building and shipping creator driven products that unlock more expression on the platform Have ownership of our UGC creator ecosystem, decide which new categories we should build, man

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Senior Content Designer , you’ll be a key member of the Accounts design team, playing a critical role in building the systems that keep Roblox safe, civil, and inclusive for a global community. You’ll focus on creating platform-level designs that make all accounts on Roblox accessible, authentic, and protected. Roblox’s mission is to connect a billion people with optimism and civility. The Safety organization is at the heart of that mission, working to ensure everyone has seamless and secure access to accounts tied to their identity. We also work on building a world-class account access and management system, ensuring safe and fun family experiences, supporting compliance with global regulations, and providing a healthy, inclusive environment for users of all ages. You’ll collaborate closely with cross-functional teams across product, design, engineering, and research, shaping the platform's approach to trust and safety through thoughtful design. This is an opportunity to work at the systems level—defining how safety and account are embedded across Roblox and designing reusable frameworks that power our vision of civil immersive online communities. You will: Own and deliver UX content