Senior Web Developer (Client Portal)
Exegy
About Exegy
Exegy is a global leader in intelligent market data, advanced trading systems, and future-proof technology. Exegy serves as a trusted partner to the complete ecosystem of buy-side firms, sell-side firms, exchanges, and financial-services technology companies around the globe.
Headquartered in St. Louis, with regional offices across North America, the UK and Europe, and Asia Pacific, Exegy has the global footprint to deliver world-class technology, support, and managed services to elite financial-market participants.
Job Summary
Exegy is seeking a Senior Web Developer to take a leading technical role in the architectural evolution, modern front-end development, and full-stack ownership of our client portal.
In this role, you will assess our existing web platform, guide technical decisions, and deliver responsive, secure, and scalable web applications that redefine how global financial clients interact with Exegy services. You’ll combine sharp front-end engineering skills with solid API integration experience, working closely with Product, Engineering, and Client Services to translate business needs into sleek, production-ready web solutions.
Location
St. Louis, MO | Montreal, Canada | Belfast, UK (Hybrid)
Responsibilities
Take technical ownership of Exegy’s client portal, driving front-end architecture, API integrations, and ongoing web platform development
Assess technical debt, web performance, UI/UX responsiveness, and existing front-end/backend integrations
Design and build responsive, client-facing features using modern JavaScript/TypeScript frameworks (React, Vite)
Develop and maintain robust backend API integrations and microservices using Python, FastAPI, or Node.js
Establish scalable web development standards, including automated unit/E2E testing, CI/CD pipelines, and cloud deployments
Partner with Product Management to turn wireframes, user flows, and business requirements into intuitive web applications
Elevate application security, accessibility, cross-browser compatibility, and runtime performance
Troubleshoot complex client-side and server-side production issues, conducting root-cause analysis and implementing lasting fixes
Provide code reviews, front-end minting, and technical mentorship to peer engineers
Qualifications
Strong professional track record as a Web Developer or Full-Stack Web Engineer delivering production-grade web applications
Advanced proficiency in JavaScript, TypeScript, and modern front-end frameworks (React strongly preferred)
Solid experience designing, consuming, and maintaining RESTful APIs and backend web services
Proficiency with Python (FastAPI/Flask) or Node.js for backend development
Experience with relational databases, web application security (OAuth, JWT, CORS), and state management
Mastery of modern web standards, CSS/HTML architecture, responsive design, and web performance optimization
Hands-on experience with version control (Git), automated testing (Jest, Cypress, Playwright), and CI/CD pipelines
Strong communication skills and the ability to work across technical and nontechnical teams
Demonstrated ownership of complex technical projects or production applications
Preferred Qualifications
Experience with React, TypeScript, and Vite build tooling
Experience developing B2B SaaS platforms, enterprise portals, or financial dashboards
Background in fintech, capital markets, or market-data technology
Exposure to cloud deployments (AWS/Azure) and application monitoring tools
Experience in financial services, capital markets, fintech, or market-data technology
Experience working within globally distributed engineering teams
- ...services to elite financial-market participants. Job Summary Exegy is seeking a Web Developer to join our engineering team in building, enhancing, and maintaining our client portal and web-based platforms. In this role, you will focus on crafting responsive user...SeniorFull time
$113.4k - $162k per year
...barriers to communication and free the flow of conversation for people everywhere. TextNow is looking for an experienced Senior Web Developer to play a key role in the development of our voice and messaging platform on Web. You will be responsible for building high-performance...SeniorLong term contractFull timeTemporary workWork at officeImmediate startRemote workWork from homeFlexible hours$88.4k - $105.6k per year
...application files in PDF format only. Web Developer II As a Web Developer II on Safe Software... ...Working as a key collaborator for our senior developers, you will touch nearly every... ...including our corporate website, partner-facing portals, and internal resource hubs. Assist...SeniorLong term contractFull timeFixed term contractSeasonal workRemote workFlexible hours- ...Banks Wealth Management team is looking for an experienced Java Web Developer with particular experience and skills in GUI development for... ...FA?s) the tools, resources, and products to help address their clients? needs, grow their practice, and enhance our Culture of Investment...SuggestedFull timeWork at office
- ...emissions. We are looking for a senior engineer who wants their work to... ...lifecycle, with a focus on developing features and delivering value to users. ~ Develop, test, integrate, and deploy backend... ...the high availability of GHGSat web services, both externally and internally...SeniorFull timeLocal areaRemote workFlexible hours
- ...Nous recherchons un(e) développeur(euse) web front-end senior pour rejoindre l’équipe de... ...d’interagir avec nos collaborateurs et clients internationaux) Un atout si vous avez... ...are looking for a Senior Front-End Web Developer to join the UX Development team and help...SeniorFull timeFlexible hours
- ...continuously, both on the job and through formal training programs. Job Description The Web Authentication Engineering team is seeking a well-rounded, talented engineer/developer with at least 3 years of industry experience around application development using Perl on...Full time
- ...You're a Web Developer Intern. Your primary role is to support the team, helping us create amazing... .... ~ Gains support from more senior team members appropriately to avoid impacts... ...and the quality of service we provide our clients. We strongly encourage applications from...SeniorSummer workInternshipWork at officeMonday to fridayShift work
$96.4k - $142.66k per year
...industry. Rockstar Games is seeking a passionate and experienced Senior Web Engineer with a focus on the “back of the frontend” to join our... ...front-end applications with Next.js and ASP.NET Core (C#). Develop comprehensive test suites. Web performance optimization....SeniorFull timeWork at officeWorldwide- ...élargissement de notre offre nous amènent à recruter un développeur Web talentueux et motivé pour renforcer notre équipe... ...capabilities we offer, we are looking for a talented and passionate Web Developer to join our multidisciplinary team and help us build relevant and...Full timeFlexible hours
- ...yourself and those around you, then we want to talk to you. As a Web Developer, you will be part of a talented team building a cutting-edge... ...design patterns and principles ~ Proficient knowledge of client-side scripting and JavaScript frameworks, including jQuery, AngularJS...
ENOVLAB INC
Remotemore than 2 months ago - ...technology services in Mobile development, Web development, Cloud computing and IT... ...company caters to its globally positioned clients by providing dynamic feasible IT solutions... ...for iPhone, whereas we use Android Code to develop native applications for Android devices. To...Full timeWork at office
$139.6k - $226.9k per year
...practitioners and patients every day. The Web team owns the website end to end: the... ...our Product Marketing team (including our Senior PMM, Platform) so that how Jane shows up on... ...someone might take in the role, from developing skills early on to becoming highly proficient...SeniorRemote jobFull timeInternship- ...precise detection, visualization, and quantification of greenhouse gas emissions. We are looking for an innovative Full Stack Web Developer for our Electric-Eye team working a web application enabling the processing and visualization of remote sensing data. As part of a...Full timeLocal areaRemote workFlexible hours
$174.49k - $205.33k per year
...under a licensing agreement. About This Role: The Senior Software Engineer, Web is part of the Engineering team and reports to our Manager... ...WebPageTest, Chrome DevTools) ~ Experience designing and developing micro-frontend architectures for scalable web applications...SeniorRemote jobFull timeLocal areaWork from home- ...On cherche un·e développeur·euse logiciel senior expérimenté·e pour rejoindre notre équipe... ...Concevoir de nouveaux logiciels, sites web et applications Travailler avec nos ingénieurs... ...to hire an experienced Senior Software Developer to join our development team. In this role...SeniorFull timeSummer workWork at officeRemote workFlexible hours
- ...techniquement compétent, spécialisé en expérience web marketing, pour prendre en charge et... ...directement la manière dont les clients découvrent nos solutions, interagissent avec... ...passionate and technically strong Frontend Developer, Marketing Web Experience to own and evolve...Full timeWork at office
- ...hands-on delivery, applied research, and client advisory. You will lead Agentic AI Design... ...build sessions and hackathons. You will also develop new AI research and advise members as they... ...~ Lead advisory calls with senior IT and digital leaders, translating complex...SeniorFull timeWork visaFlexible hours
- ...English version will follow Développeur Web Full Stack Aperçu Nous recherchons un stagiaire en développement Web Full Stack... ...Environnement de travail moderne basé sur Apple Full Stack Web Developer Overview We’re looking for a Full Stack Web Developer Intern...InternshipWork at officeFlexible hours2 days per week
$100k - $130k per year
...will your new role look like? You'll play a founding role on the Web Experience team, whose mission is to build a brand-new web... ...even more accessible and intuitive, directly in the browser. As a developer on this team, you'll help define the technical foundations and user...Full timeLocal areaRemote workWorldwide- ...game studios in the world. We are currently seeking experienced Web Dev Engineers who can contribute to our growth. As a fully remote... ...most intricate challenges in multiplayer game development and developing reliable multi-player games. We have become the primary choice...Permanent employmentFull timeRemote workWorldwide
- ...Description We are looking for a strategic and data-driven Senior Client Success Specialist to support our large enterprise accounts following... ...Act as a subject matter expert on advanced modules (patient portal, billing, interoperability). Support clinics through change...SeniorLong term contractPermanent employmentFull timeRemote workWorldwide
- ...passionate individual to join our team as the (Senior) Web Analyst (f/m/d)and drive our business... .... Design, implement and optimise client-side and server-side tracking solutions.... ...Marketing and business stakeholders. Develop tracking specifications for new products,...SeniorPermanent employmentFull timeWork at office
- ...Role Summary: The Senior Client Platform Engineer provides technical leadership across shared... ..., and cross-platform continuity across web and mobile environments. In addition to... ...using modern and legacy technologies. Develop and maintain client applications using...SeniorRemote jobContract work
$150k - $200k per year
...Job Title: Full-Stack Game Developer (Sports EdTech) Location: Austin, TX (On-site preferred... ...math equations. We are targeting the web (HTML5/WebGL) to ensure zero friction, and... ...have proven experience developing both the client-side game and the backend infrastructure for...Remote jobFull timeSeasonal workFlexible hours- The primary responsibility of the Senior Web Programmer is to design, develop and maintain customized solutions for our clients.SeniorFull time
- ...software architects (including the CTO), senior developers, and dedicated quality assurance team. As... ...responsibility for developing the company’s enhanced web services to enable the support and... ...infrastructure in areas such as portal frameworks, federated identity management...SeniorFull time
- ...care. Our team personally cares about our clients and the world around them, and we care... ...world. Role overview As a Senior Software Developer, we expect you to be disciplined... ...should be proficient with Full-stack web development Development Methodologies...SeniorFull timeWork at officeFlexible hours
$105k - $115k per year
...technology team is looking for an inspired, motivated, and experienced Senior Developer to join our Communications team for a contract engagement. We... ...ability and technical analysis skills – including web performance optimization ~ Proven ability to jump into projects...SeniorFull timeContract workLocal area- ...destination for trailblazing senior software engineers like yourself... ...role is critical in bridging web technologies (Ionic/Capacitor)... ...effective communication with client project stakeholders regarding... ...Phase 1 Android implementation by developing robust background services,...SeniorFull timeLocal area
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Web Developer (Client Portal). Be the first to apply!
