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Referenz: JFI18/02_1613651255

Senior Back-End Developer

England, London

  • Upto 70000 GBP
  • Developer Stelle
  • Fähigkeiten: NODE.JS, GRAPHQL, GOLANG, JAVASCRIPT, TESTING, AWS, BACK END, DEVELOPER
  • Seniority: Senior

Jobbeschreibung

A fantastic opportunity for a Senior Back-End (Node.js) Developer to join a highly successful company with an outstanding culture. The client are Programmatic Creative Specialists and work with large clients such as McDonalds and Audi.

As a senior developer you will lead their migration project from the legacy code to Node.js, built on a microservices architecture. The company use AWS servers, so experience with the cloud is a huge bonus. You will be a hands-on developer as well conducting code reviews, documentation and mentoring more junior members of the team. There is plenty of scope for progression within the role.

The office is located in London but remote working options are available, incl fully remote post-covid for UK candidates.

Role & Responsibilities

* Work on an exciting migration project to NodeJS
* Taking ownership of the codebase and new features
* Being the technical lead on projects with non-technical stakeholders
* Researching, designing and building complex functionalities
* Writing and implementing efficient and high-quality code
* Producing high quality documentation

Skills & Qualifications

* Strong experience working with Node.js
* Strong experience with AWS
* Experience with GraphQL
* Experience with microservices
* Bonus: PHP, GoLang and React
* Excellent written and verbal communication skills

Benefits

* BUPA Private Health and Dental
* Employer's pension contribution
* Season ticket loan
* Work equipment provided
* Career progression

If you're interested please contact c.davies1@jeffersonfrank.com for more information.

Referenz: JFIDC0203_1614712895

Senior VOIP Developer (C++) - Fully Remote

England, London

  • 45000 to 65000 GBP
  • Developer Stelle
  • Seniority: Senior

Jobbeschreibung

Senior Voice Developer (Remote)

A well-established, global provider of telecoms, payments, and mobile solutions (headquartered near 5 ways in Birmingham) is looking to on-board an accomplished C++ Developer VoIP developer (from a C++ background) on a permanent basis.

Reporting to the Head of Development you will be intrinsically involved in all stages of the SDLC for new products, fixing any bugs with existing solutions and be centrally involved for the future strategy and delivery of technology solutions utilising our existing platforms whilst using some of the latest technologies.
This role will require a good degree of 'code archaeology' experience and will suit someone who would like to make their mark upon a particular system / product.

Key Responsibilities

* Be involved with the delivery of new development projects from analysis to release
* Working closely with Head of Development, Product Owners and Stakeholders to produce accurate delivery estimates and offer advice in managing the transition from analysis to delivery
* Guide development team efforts towards successful product delivery
* Effect any necessary maintenance or bug fixes to existing solutions
* Take part in reviews / meetings and update on project progress
* Work closely with internal teams to ensure seamless implementation of existing and new systems

Required Skills

* Up to 5+ years of hands on VoIP Network Engineering experience using C++
* Up to 5+ years of a proven record of troubleshooting, operating, and improving complex national large enterprise high-availability VoIP networks / large regional, national, or international carrier-grade SIP VoIP networks
* A thorough understanding and hands-on working knowledge of carrier-grade VoIP infrastructure, specifically SBC clusters (such as Audiocodes, Sonus), PBX solutions (SPECIFICALLY Asterisk, but FreeSwitch considered), SIP servers (OpenSIPS, Kamailio) and end-point devices (WebRTC clients, SIP Trunks)
* Able to understand and analyse PCAP traces to solve complex SIP VoIP and IP internet-working challenges
* Expert programming within C++ (mostly 98, some 11)
* Expert knowledge or experience of telephony concepts would be beneficial (SIP, VoIP, RTP/SRTP, TLS, Voice codecs ideally - A bonus if some knowledge of Kamailio)
* Lots of experience configuring and programming for Asterisk (AGI/AMI) in a Linux environment
* Solid knowledge of developing within Microsoft / Linux based environments
* Good knowledge of Development Design Patterns
* Experience with source control management system and CI/CD environments
* Experience with automated testing
* Experience with agile development methodologies - Scrum, Kanban
* Experience with high performance computing applications, libraries, multi-threading, or parallel programming.
* Solid experience in the design, development, and maintenance of RESTful API's
* Excellent Testing and Debugging capabilities
* Self-driven, independent problem solver, technically versatile, willing to be flexible and accept new challenges.

Desirables

* Good administrator-level knowledge of Linux/Unix.
* Expertise in SMPP, SMS Gateways
* Good understanding of using Software Design Patterns
* Docker
* MySQL
* PHP

For more information get in touch with Daniel Cordy on 020 3879 8375 or email your updated CV to d.cordy@jeffersonfrank.com

Referenz: JFIDC0203_1616071548

Senior VOIP Developer (C++) - Fully Remote

England, London

  • 45000 to 65000 GBP
  • Developer Stelle
  • Seniority: Senior

Jobbeschreibung

Senior Voice Developer (Remote)

A well-established, global provider of telecoms, payments, and mobile solutions (headquartered near 5 ways in Birmingham) is looking to on-board an accomplished C++ Developer VoIP developer (from a C++ background) on a permanent basis.

Reporting to the Head of Development you will be intrinsically involved in all stages of the SDLC for new products, fixing any bugs with existing solutions and be centrally involved for the future strategy and delivery of technology solutions utilising our existing platforms whilst using some of the latest technologies.
This role will require a good degree of 'code archaeology' experience and will suit someone who would like to make their mark upon a particular system / product.

Key Responsibilities

* Be involved with the delivery of new development projects from analysis to release
* Working closely with Head of Development, Product Owners and Stakeholders to produce accurate delivery estimates and offer advice in managing the transition from analysis to delivery
* Guide development team efforts towards successful product delivery
* Effect any necessary maintenance or bug fixes to existing solutions
* Take part in reviews / meetings and update on project progress
* Work closely with internal teams to ensure seamless implementation of existing and new systems

Required Skills

* Up to 5+ years of hands on VoIP Network Engineering experience using C++
* Up to 5+ years of a proven record of troubleshooting, operating, and improving complex national large enterprise high-availability VoIP networks / large regional, national, or international carrier-grade SIP VoIP networks
* A thorough understanding and hands-on working knowledge of carrier-grade VoIP infrastructure, specifically SBC clusters (such as Audiocodes, Sonus), PBX solutions (SPECIFICALLY Asterisk, but FreeSwitch considered), SIP servers (OpenSIPS, Kamailio) and end-point devices (WebRTC clients, SIP Trunks)
* Able to understand and analyse PCAP traces to solve complex SIP VoIP and IP internet-working challenges
* Expert programming within C++ (mostly 98, some 11)
* Expert knowledge or experience of telephony concepts would be beneficial (SIP, VoIP, RTP/SRTP, TLS, Voice codecs ideally - A bonus if some knowledge of Kamailio)
* Lots of experience configuring and programming for Asterisk (AGI/AMI) in a Linux environment
* Solid knowledge of developing within Microsoft / Linux based environments
* Good knowledge of Development Design Patterns
* Experience with source control management system and CI/CD environments
* Experience with automated testing
* Experience with agile development methodologies - Scrum, Kanban
* Experience with high performance computing applications, libraries, multi-threading, or parallel programming.
* Solid experience in the design, development, and maintenance of RESTful API's
* Excellent Testing and Debugging capabilities
* Self-driven, independent problem solver, technically versatile, willing to be flexible and accept new challenges.

Desirables

* Good administrator-level knowledge of Linux/Unix.
* Expertise in SMPP, SMS Gateways
* Good understanding of using Software Design Patterns
* Docker
* MySQL
* PHP

For more information get in touch with Daniel Cordy on 020 3879 8375 or email your updated CV to d.cordy@jeffersonfrank.com

Referenz: JFI17/02_1613581132

Senior React Developer

England, London

  • Upto 70000 GBP
  • Developer Stelle
  • Fähigkeiten: REACT, REDUX, JAVASCRIPT, TYPESCRIPT, GIT, TESTING, AWS, FRONT END, DEVELOPER
  • Seniority: Senior

Jobbeschreibung

Our highly successful client are hiring for a Senior Front End Developer. The fast-paced business is built up of a wide-range of talented specialists, from developers, designers, strategists, analysts, technicians and managers. Using the smart use of technology, data resources and creative thinking they provide audience-first creative, optimised to deliver against the client's expectations. The dynamic, outgoing team are all career driven and enjoy working in a fast-paced, agile environment.

Role & Responsibilities

* Work on 3 exciting projects with React and Redux
* Taking ownership of the codebase and new features
* Being the technical lead on projects with non-technical stakeholders
* Researching, designing and building complex functionalities
* Writing and implementing efficient and high-quality code

Skills & Qualifications

* Strong experience working with React
* Strong experience with Redux
* Strong proficiency in JavaScript, ES6 and beyond, and TypeScript
* Familiar with Git
* Experience with testing
* Excellent communication skills

Benefits

* BUPA Private Health and Dental
* Employer's pension contribution
* Season ticket loan
* Work equipment provided
* Career progression
* Remote working

The office is based in London but fully remote can be an option for UK based candidates.

If you're interested please contact c.davies1@jeffersonfrank.com

Referenz: 01/04/2021_1617283817

Front End Developer (Angular) - London - £65,000

England, London

  • 55000 to 65000 GBP
  • Developer Stelle
  • Fähigkeiten: Angular, Front end, Developer, AWS, Python, Git, Angular2+, Angular8
  • Seniority: Mid-level

Jobbeschreibung

Front End Developer - London - £65,00

You'll be joining a small yet well established company who offer a solution where others have failed to do so. The software aims at streamlining the way companies and investment banks work together to raise capital. Their ever growing brand has some massive names on their client books and some outstanding figures to showcase their growth. Within the company it is important to take risks, be humble and most importantly be a driven individual with desire to succeed.

Even though the business is small, it is collaborative and now in fact global. Engineering, product and development teams are all close knit highlighting the culture they have created.

The infrastructure of the business is all based on AWS and therefore any exposure to this would be great. Even the basics when considering DevOps tools such as Jenkins for automation would be good. However, for this role in particular it is essential that you have had commercial experience with Angular. The versions of Angular that you have used is not a deal breaker but 8 is the preference. CSS pre processor experience with either SASS or LESS is also another key aspect.

Now, on to the fun part. Just take a browse at the list of benefits below. Even though there are many more than this, it gives an insight in to the rewards you get!

Benefits

* Competitive salary plus equity package
* Generous home office budget
* Annual training budget
* Flexible working hours
* Annual trips away
* Cycle schemes

&& Many more!



My client are looking to book interviews in the week after the Easter bank holiday so please don't hesitate to reach out!

a.rafique@jeffersonfrank.com - email with your CV to apply.

Referenz: 16/03/21_1617354034

Lead Full Stack Developer - London - £65,000

England, London, City of London

  • 55000 to 65000 GBP
  • Developer Stelle
  • Fähigkeiten: PHP, Symfony, Laravel, Remote, Developer, Engineer, Platform, AWS, Lead developer, Senior
  • Seniority: Senior

Jobbeschreibung

Lead Developer - London - Up To £65,000

Augmented reality is just one aspect of this organisation who aim to get inspiring digital content over to the largest retailers globally for their clients. Think about buying a freezer for example, consumers always like to see how the appliance would look in the house first. A surge of online shopping seen the UK and Europe reported an increase of 129% in April last year and there is no signs of this slowing down. It's more important than ever.

Their sole purpose is to 'join the dots' for our brands and retailers and help you understand how buying decisions are being made and how they can deliver a personalised experienced. The environment is fast paced with an exciting company culture.

You will be responsible for building on existing applications with Zend & Code Igniter from PHP 5.6 to 8. There is also a key project from the offset with a migration of Rackspace over to AWS. Hence why both PHP and AWS are essential.

The leadership aspect of the role is also essential. Within your day to day tasks at the company, mentoring team members should always be a part. This could involved helping out with a challenge they are stuck on or offering some quick training, you should be on hand. As well as this you will be given opportunities to offer opinions and ideas surrounding architecture. The position is of a high seniority.



Reach out on 0191 338 7631 or email a.rafique@jeffersonfrank.com to apply. Interviewing throughout the week.

Referenz: 16/03/21_1615895115

Lead Full Stack Developer - London - £65,000

England, London, City of London

  • 55000 to 65000 GBP
  • Developer Stelle
  • Fähigkeiten: PHP, Symfony, Laravel, Remote, Developer, Engineer, Platform, AWS, Lead developer, Senior
  • Seniority: Senior

Jobbeschreibung

Lead Developer - London - Up To £65,000

Augmented reality is just one aspect of this organisation who aim to get inspiring digital content over to the largest retailers globally for their clients. Think about buying a freezer for example, consumers always like to see how the appliance would look in the house first. A surge of online shopping seen the UK and Europe reported an increase of 129% in April last year and there is no signs of this slowing down. It's more important than ever.

Their sole purpose is to 'join the dots' for our brands and retailers and help you understand how buying decisions are being made and how they can deliver a personalised experienced. The environment is fast paced with an exciting company culture.

You will be responsible for building on existing applications with Zend & Code Igniter from PHP 5.6 to 8. There is also a key project from the offset with a migration of Rackspace over to AWS. Hence why both PHP and AWS are essential.

The leadership aspect of the role is also essential. Within your day to day tasks at the company, mentoring team members should always be a part. This could involved helping out with a challenge they are stuck on or offering some quick training, you should be on hand. As well as this you will be given opportunities to offer opinions and ideas surrounding architecture. The position is of a high seniority.



Reach out on 0191 338 7631 or email a.rafique@jeffersonfrank.com to apply. Interviewing throughout the week.